WO2021207862A1 - Triple-rotor flotation cell - Google Patents

Abstract

The invention relates to two devices for a flotation cell system. The first is a triple-rotor agitation device and the second is a suction device, which, operating together, are used to separate hydrophobic particles from a mixture of particles and liquid, also called "pulp", remove blockages, and reduce energy consumption and water consumption.

Description

TRIPLE ROTOR FLOAT CELL

The present invention patent application discloses two devices for a flotation cell system. The first is a triple rotor agitation device and the second is a suction device. The triple rotor stirring device is composed of a shaft arranged vertically inside the cell that runs from the top to the bottom of the cell. Three rotors are mounted on said shaft. A first straight-finned cylindrical rotor located at the top of the set of rotors, a second inclined-finned cylindrical rotor attached to the bottom of the first rotor, a covering cone and a third helical-finned conical rotor located at the bottom of the axis at the height of the false bottom of the cell. The suction device is composed of a cylindrical ring of greater height and with lateral perforations, which is mounted on the upper part of the suction tube, which also has perforations, but in the lower part. These two devices when working together serve to separate the hydrophobic particles from a mixture of particles and liquid also known as pulp. In addition, it prevents the solids from settling inside the cell and creating tricks, it also allows revolutions to be reduced by up to 50% without clogging, it allows to operate with less process water, reduce turbulence and improve recovery. This invention patent focuses on flotation processes in mining, but it can also be applied to flotation processes required in the cement industry, food processing, paper industry, in process industries related to the treatment of liquid industrial waste. (Riles) and others that use within their process the separation of hydrophobic particles from a mixture of particles and liquid through the flotation process.

STATE OF THE ART

The flotation process is widely used in industry to separate valuable particles from waste material particles. In the minerals industry, for example rock containing a valuable component is ground using grinding equipment and then mixed with water. Reagents that selectively adhere to the valuable particles, rendering them hydrophobic and leaving the unwanted particles in a hydrophilic state, are generally incorporated into the material and water mixture, also known as pulp.

Generally speaking, flotation consists of the adhesion of solid particles to bubbles due to hydrophobic properties in minerals. The particles that are in suspension in the pulp, rise with the bubbles towards the surface of the cell due to the difference in density, forming a layer of foam in the upper part of the cell. The foam that carries the flotation or concentrate product is collected by gutters arranged in the upper part of the cell.

On the other hand, the pulp with the particles that were not recovered during flotation are called tail or tailings.

When the species of interest represent a small fraction of the mineral and the sterile species are larger in volume, flotation separations take on the appearance of a concentration process.

This process is applicable to species of different origins, whether organic or inorganic. The former include oils and resins, so flotation is applicable in the hydrocarbon industry, in the paper mill (deinking), and in environmental processes. On the other hand, among the inorganic species are those of mineral origin, whether metallic or non-metallic, so flotation is widely applied in the concentration of sulfurized metals, as well as in the salt industry.

The flotation cell systems can be self-priming or with forced air injection. They mainly consist of a rigid pond and a stirring device that is mounted inside the pond. The stirring device is made up of a shaft that is mounted in the center of the cell and vertically, from the top of the cell to the middle or bottom, depending on the type. cell. In the upper part of the shaft, a pulley and a bearing carrier are generally mounted, and the rotor is mounted in the lower part. Inside the cell, the rotor works with the stator or diffuser. In the case of self-priming cells, the rotor is mounted in the upper part of the cell, being completely submerged in the pulp. When the rotor rotates, it produces a vortex that lifts the pulp from the cell floor to the rotor position and at the same time this vortex allows the injection of air at atmospheric pressure. The rotor centrifuges the pulp mixed with air against the disperser, breaking up the air and forming small bubbles which, when mixed with the reagent, allow the mineralized particles to adhere.

Some examples of flotation cells are described in US patents US5,611,917 to Denver, US4,337,272 to Szatkowski et al .; US3,993,563 to Denver, US6,095,336 to Redden et al; and US6,070,734 to Hunt et al.

A key aspect in the operation of the process is the Flotation Kinetics. Within this we have the flotation time (t), this is a fundamental design variable in the process and corresponds to the maximum time that must be given to the slower particles so that they can be extracted from the pulp.

In the operation of a flotation cell, the design of the stirring device is a key element because it fulfills four basic functions of the process: i) Suspension of solids ii) Generation of bubbles iii) Air dispersion iv) Particle-bubble collision

The main challenge in designing a stirring device is how to perform these 4 basic functions satisfactorily. The design of the agitation system affects the flow characteristics and the kinetics of the cell, which in turn determines the performance of the 4 basic functions.

Self-priming cell systems currently present the following design and operating problems:

• In the first place, self-priming cell systems are not capable of keeping all the solids present in the pulp in suspension, a situation that generates multiple tricks inside the cell. This condition is repeated in all flotation plants that have self-priming cell systems.

• On the other hand, by increasing the revolutions of the stirring device to improve the problems of cheating, a second problem is generated, since the turbulence generated by the rotor increases, thus affecting the adhesion of the particles with the bubbles, situation that reduces recoveries.

• On the other hand, if you want to reduce the revolutions of the stirring device to reduce turbulence and improve the selective, it is not possible because it increases sedimentation and ducking.

• When there are increases in density due to lack of water for the process, the problem of ducking increases and sometimes it is necessary to stop the process.

• When they increase the size of the mineralized particles that reach flotation, an increase in sedimentation is also generated.

• Another important issue is the higher electricity consumption required by this cell. In self-priming cell systems, the stirring devices must rotate at higher revolutions compared to forced air cell systems. This generates additional electricity consumption. • The lower area of the upper rotor overlaps with the cylindrical ring that is mounted on the suction tube. In this overlapping zone two problems are generated, the first is that the pulp centrifuged by the rotor collides with the wall of the cylindrical ring generating a pressure zone. This pressure zone makes it difficult for the pulp to rise from the cell floor to the rotor area, causing the solids to settle. The second problem is that in the outer periphery in the upper part of the ring a vortex is generated that is continuously feeding the center of the rotor with part of the load that is outside the cylindrical ring, thus reducing the flow of pulp to the interior. of the suction tube, a situation that also generates the sedimentation of the solids. Furthermore, this vortex consumes energy and does not contribute to the kinetic efficiency of the design. Finally, the flow of this vortex increases as the suction tube becomes blocked.

• Tricks inside the cell produce loss of volumetric capacity and affect residence times and recoveries. They also produce increases in vibrations, temperatures and fluctuations in current consumption.

• The flotation cell systems must be stopped on a scheduled basis from time to time to clean the tanks and the perforations in the false bottom. Affecting the continuity of the process and results.

Regarding what currently exists in the state of the art. Other authors have proposed stirrer designs for flotation cells, such as patents MX2015005708 A and WO2013 / 067343. These designs have different characteristics from the design to be patented in terms of their functionality, construction materials and geometry. In these aspects, the present invention offers strong improvements with respect to the current state of the art, offering a novel design that manages to solve all the aforementioned problems.

Particularly the objective of this invention is to provide a stirring device that delivers greater efficiency to the process by improving the design of the equipment, mainly through the combination of different types of rotors and geometries that allow the maximum optimization of the flotation kinetics. , energy consumption and water use.

Based on the foregoing, the solution proposed in this application consists of a flotation cell design in which two devices stand out.

The first is a triple rotor agitation device and the second is a complementary suction device. The stirring device is composed of an axis centered inside the cell arranged vertically, running from the top to the bottom of the cell. Three rotors are mounted on said shaft. The first straight bladed cylindrical rotor is located in the upper part of the cell. This rotor is completely submerged below the level of the pulp and on the cylindrical ring. The rotation of this rotor produces two vortices, one in the upper part that allows the air at atmospheric pressure to enter the pulp and a second vortex in the lower part that allows the pulp to be suctioned through the suction tube. In the center of the rotor the pulp meets the air and this mixture is centrifuged and expelled against the disperser.

The second rotor is cylindrical with inclined blades and is attached to the lower part of the first rotor. This rotor works inside the cylindrical ring and fulfills two functions. The first function is to depressurize the inner zone of the ring to facilitate the ascent of the pulp inside the suction tube and the second is to direct the flow towards the upper rotor.

The third rotor is conical with helical blades and is located in the lower part of the shaft at the height of the false bottom of the cell. This rotor fulfills several functions, starting by keeping the solids that are in the lower part of the cell in suspension, avoiding their sedimentation, increasing the flow of pulp into the suction tube, increase the speeds in the perforations of the false bottom, avoiding trickery in those areas.

The second device is the suction device and is composed of a higher cylindrical ring with lateral perforations which is mounted on the upper part of the suction tube. In turn, the suction tube is supported on the false bottom and its height reaches the bottom of the second rotor. The suction tube has perforations at the bottom. The function of the cylindrical ring of greater height and with lateral perforations is to increase the flow inside the tube by reducing and controlling the vortex that is generated in this area. In this way, the energy that was previously used in the vortex is used to use it to increase the flow inside the suction tube. The lateral perforations allow to regulate how much of the vortex flow will re-enter the upper rotor.

The lateral perforations in the lower part of the suction tube allow to increase and improve the recirculation flow of pulp and air bubbles inside it.

The combination of these two devices, one consisting of a triple rotor device and the other device consisting of a ring with lateral perforations, a suction tube with perforations in the lower part, allows all the solids to be kept in suspension, avoiding sedimentation. of particles and tricks inside the flotation cell, thus solving the main design problem that self-priming cells present. Furthermore, this combination of devices makes it possible to reduce the revolutions of the equipment by up to 50% without presenting problems of ducking, a characteristic that other cells do not have. It also allows you to work with higher solids and reduce water consumption in the process. Another advantage is that reducing the revolutions reduces power consumption exponentially. Another important advantage is that, by reducing the revolutions, the turbulence in the upper part of the cell is also reduced, which is where the foam phase with the mineralized particles is located. This increases the probability that the particles remain adhered to the bubbles, obtaining an improvement in the recovery efficiency. We also have that, by being able to reduce the revolutions, the thicker or larger particles float more easily. It also allows working with minerals with larger particles, without generating sedimentation problems. In the same case, if there is a lack of water for the process and it is necessary to increase the density, this design allows to operate without problems in this condition. The combination of these devices also allows to increase the recirculation capacity of the equipment by 80%, thus reducing short circuits, increasing the flow into the suction tube. In case more air is required, it allows the injection of air in the third rotor. Improves self-injection of air and disintegration allowing to obtain a higher flow rate and smaller bubbles. Reduces vibrations, temperatures in dynamic systems. It maintains the design volumetric capacity and residence times due to the fact that it does not present dead zones due to deception.

This invention patent focuses on flotation processes in mining, but it can also be applied to flotation processes required in the cement industry, food processing, paper industry, in process industries related to the treatment of liquid industrial waste. (Riles) and others that use within their process the separation of hydrophobic particles from a mixture of particles and liquid through the flotation process.

The system also offers high versatility, since it can be automated from a remote control station, which makes it possible to apply various technologies, such as external control and monitoring of the cell through dynamic feedback systems, or by applying advanced artificial intelligence systems or control by neural networks.

BRIEF DESCRIPTION OF THE FIGURES

Figure 1. Main view showing a flotation cell system (1), composed of a pond (1A), the pond bottom (IB), a false bottom (3D), false bottom supports (3G), a pipeline aspiration (3C), a cylindrical ring (3A) with perforations (3B), a conical rotor with helical blades (2E) located at the bottom of the shaft (2A), a cover cone (2D) for shaft protection (2A) , a cylindrical inclined-finned rotor (2C) located in the lower part of the rotor (2B) and a straight-finned cylinder rotor (2B) located in the upper part inside the tank (1A).

Figure 2. View of the triple rotor stirring device (2) composed of a pulley (2J), located in the upper part of the shaft (2A), a bearing holder (2K), a shaft (2A), a cylindrical finned rotor straight blades (2B), a second inclined vane cylindrical rotor (2C) located in the lower part of the rotor (2B), a third conical helical vane rotor (2E) located in the lower part of the shaft (2A), a protective cone shaft (2D) and a fixing device (2F).

Figure 3. Sectional view of the set of rotors of the stirring device (2) where the shaft (2A) is shown, a cylindrical rotor with straight blades (2B), a second cylindrical rotor with inclined blades (2C) located in the part rotor (2B), a fixing device (21), a third conical rotor with helical blades (2E) located in the lower part of the shaft (2A), a shaft protection cone (2D), a fixing device ( 2F), perforations (2G) located between the helical fins of the conical rotor (2E) and a hollow conduit (2H) along the entire axis (2A).

Figure 4. Sectional view of the flotation cell (1) showing the cylindrical ring (3 A) with lateral perforations (3B) assembled by an adjustment flange (3E) which is mounted on the upper part of the duct suction (3C), which in turn is mounted on the false bottom (3D), which is supported in turn on the supports (3G).

Figure 5. Exploded view showing the components of the suction device (3), composed of a cylindrical ring (3 A), with perforations (3B), with an adjustment flange (3E), which is mounted on the duct suction (3C), with perforations (3F), which has flanges (3F) and (31). Furthermore, the suction device (3) is supported on the false bottom (3D), which in turn rests on the supports (3G).

Figure 6. Main view showing a flotation cell (1) with a stirring device with a double rotor combination (2), composed of a pond (1A), the bottom of the pond (IB), a false bottom ( 3D), false bottom supports (3G), a suction duct (3C), a cylindrical ring (3A) with perforations (3B), a conical rotor with helical blades (2E) located in the lower part of the shaft (2A), a covering cone (2D) to protect the shaft (2A) and a straight-finned cylinder rotor (2B) located in the upper part inside the tank (1A).

Figure 7. View of the stirring device (2), a combination of two rotors, composed of a shaft (2A), a cylindrical rotor with straight blades (2B) located in the upper part of the set of rotors, a conical rotor with helical blades (2E) located at the bottom of the rotor assembly, a shaft protector cone (2D), a fixing device (2F).

Figure 8. View of the stirring device (2), a combination of two rotors, composed of a shaft (2A), a straight-finned cylindrical rotor (2B) located in the upper part of the set of rotors, a second cylindrical finned rotor inclined (2C) located in the lower part of the rotor (2B), a fixing device (2E).

DETAILED DESCRIPTION OF THE INVENTION

The invention discloses two devices for a flotation cell system. The first is a triple rotor stirring device and the second is a suction device, which when working together serve to separate the hydrophobic particles from a mixture of particles and liquid as well. known as pulp, it also serves to eliminate stagnation, reduce energy consumption and reduce water consumption. Both devices are described below.

The first is a triple rotor stirring device, which is composed of a vertically centered axis inside the cell (2A), which runs from the pulley (2J) of the cell to the bottom of the cell. . In the upper part of the shaft there is a pulley (2J) that transmits the movement to the shaft, then there is the bearing holder (2K) which is fixed to the support structure (2L). Three rotors are mounted on said shaft. The first straight bladed cylindrical rotor (2B) is located in the upper part inside the cell tank (1A). And it is fixed to the shaft by adjusting cones and keyways. This rotor is completely submerged below the level of the pulp and on the cylindrical ring (3A). The rotation of this rotor produces two vortices, one in the upper part that allows air at atmospheric pressure to enter the pulp and a second vortex in the lower part that allows the pulp to be suctioned through the suction tube (3C) . In the center of the rotor, the pulp meets the air and this mixture is centrifuged and expelled against the disperser (ID) and the skirts (1E).

The second rotor is cylindrical with inclined blades (2C), and is attached to the lower part of the first rotor (2B). And it is fixed to the shaft by adjusting cones and keyways. At the bottom of the rotor there is a fixing nut (21). This rotor (2C) works inside the cylindrical ring (3A) and fulfills two functions. The first function is to depressurize the inner zone of the ring (3A) to facilitate the rise of the pulp into the suction tube (3C) and the second is to direct the flow to the upper rotor (2B).

The third rotor is conical with helical blades (2F), and is located in the lower part of the shaft (2A) at the height of the false bottom (3D) of the cell (1). And it is fixed to the shaft by adjusting cones and keyways. At the bottom of the rotor there is a fixing nut (2F). This rotor (3D) fulfills several functions, starting by keeping the solids in the lower part of the cell in suspension, avoiding their sedimentation, increasing the flow of pulp into the suction tube, increasing the speeds in the perforations of the false bottom avoiding anchoring in those areas.

Between the rotors (2C) and (2E), there is a cover cone (2D) mounted concentrically on the shaft (2A), the cover cone (2D) allows to protect the shaft and direct the solid and liquid particles towards the cylindrical rotors (2C) and (2B).

The drive shaft (2A) has a cavity inside (2H) along the entire shaft (2A). This cavity allows forced air to be injected in case the self-suction air is insufficient for the process. It allows the injection of air or gases that enter the mixture of particles and liquid through conduits (2G) connected to holes between the helical fins of the conical helical rotor (2E), allowing to improve the distribution of air inside the cell (1) , increasing the probability of adhesion of the valuable particles with the bubbles, which contributes to a higher recovery percentage.

The second is a suction device (3) and is composed of a cylindrical ring (3 A) of greater height with lateral perforations (3B) and with a flange (3E) to adjust the union and tighten, which is mounted on the top of the suction tube (3C). In turn, the suction tube (3C) is supported on the false bottom (3D) and reaches the height of the lower part of the second rotor (2C). The suction tube has perforations at the bottom (3F). The function of the cylindrical ring (3A) of greater height and with lateral perforations (3B) is to increase the flow inside the tube by reducing and controlling the reflux of the vortex that is generated on the outside of this zone. In this way, the energy that was previously used to move the vortex flow is used, now moving a greater flow into the suction tube (3C). The lateral perforations (3B) allow to regulate how much of the vortex flow will re-enter the upper rotor (2B).

The lateral perforations (3F) in the lower part of the aspiration tube (3C) allow to increase and improve the recirculation flow of pulp and air bubbles into the aspiration tube and the cell. The suction device is supported on a false bottom (3D), which in turn is supported on the 3G supports, which in turn are supported on the bottom of the tank (IB) of the cell (1).

The triple rotor stirring device (2) for flotation cells (1) can work by combining two or three rotors. The rotor combinations that can be used depending on the need of each process are defined below.

First combination: The stirring system can be used with three rotors (2B), (2C) and (2E), and with the cover cone (2D) (figure 2).

Second combination: The stirring system can be used with two rotors (2B), (2C) (figure 7).

Third combination: The stirring system can be used with two rotors (2B), (2E), and with the cover cone (2D) (figure 8).

The triple rotor stirring device (2) and the aspiration device (3) can be used in open or sealed cells.

In the triple rotor stirring device (2), the intermediate element (2D) has an inverted cone geometry with an angle of 10 degrees, being able to reduce or increase its angle with respect to its coaxial axis.

In the triple rotor stirring device (2), the shaft (2A), the upper cylindrical rotor (2B), the intermediate rotor (2C), the covering cone (2D) and the conical rotor (2E) are independent elements. . Being able to be manufactured as integrated or solidarity elements.

In the triple rotor stirring device (2), the upper cylindrical rotor (2B), the intermediate rotor (2C), are independent elements. Being able to be manufactured as integrated or solidarity elements.

In the triple rotor stirring device (2), the upper cylindrical rotor (2B), the intermediate rotor (2C), the covering cone (2D), are independent elements. Being able to be manufactured as integrated or solidarity elements.

In the triple rotor stirring device (2), the upper cylindrical rotor (2B), the intermediate rotor (2C), the covering cone (2D) and the conical rotor (2E) are independent elements. Being able to be manufactured as integrated or solidarity elements.

In the triple rotor stirring device (2), the cover cone (2D) and the conical rotor (2E) are independent elements. Being able to be manufactured as integrated or solidarity elements.

In the triple rotor stirring device (2), the shaft (2A), the upper cylindrical rotor (2B), the intermediate rotor (2C), the covering cone (2D) and the conical rotor (2E), are manufactured with carbon steels, but they can be manufactured in other ferrous, non-ferrous alloys such as aluminum or bronzes, organic materials such as wood, composite materials such as fiberglass or carbon fiber, plastics such as polyvinyl chloride or polyethylene, or any other material that withstand the loads and mechanical conditions required.

In the triple rotor stirring device (2), the shaft (2A), the upper cylindrical rotor (2B), the intermediate rotor (2C), the covering cone (2D) and the conical rotor (2E), have a protective coating for wear in polyurethane, but they can be covered by natural rubber, neoprene rubber, nitrile, ceramic coatings, liquid steels, anti-abrasive paints, polyethylene, polymers, wear plates. In the triple rotor stirring device (2), the straight-finned cylindrical rotor (2B), located at the top inside the cell, is fixed to the shaft (2A), by means of keyways and adjusting cones, and can also be fixed with bolts, welds, pins or flanges.

In the triple rotor stirring device (2), the straight-finned cylindrical rotor (2B), located at the top inside the cell, has its straight fins, and can be manufactured at an angle with respect to the vertical plane positioned on its axis. coaxial or helical.

In the triple rotor stirring device (2), the straight-finned cylindrical rotor (2B), located at the top inside the cell, has 10 fins distributed radially with respect to the coaxial axis of the rotor (2C), being able to reduce or increase the number of fins.

In the triple rotor stirring device (2), the straight-finned cylindrical rotor (2B), located at the top inside the cell, has a diameter and a height that depends on the size of the cell, if the size of the cell increases, the diameter of the rotor and its height also increase.

In the triple rotor stirring device (2), the inclined finned cylindrical rotor (2C) is fixed to the shaft (2A), by means of keyways and the fixing nut (21), and can also be fixed with bolts, welds, pins or flanges.

In the triple rotor stirring device (2), the inclined vane cylindrical rotor (2C) has its fins at an angle of 5 degrees, being able to reduce or increase its angle with respect to the vertical plane positioned on its coaxial axis.

In the triple rotor stirring device (2), the inclined finned cylindrical rotor (2C) has 10 helical fins distributed radially with respect to the coaxial axis of the rotor (2C), being able to reduce or increase the number of fins.

In the triple rotor stirring device (2), the inclined finned cylindrical rotor (2C) has a diameter and a height that depends on the size of the cell, if the size of the cell increases, the diameter of the rotor and its height also increase.

In the triple rotor stirring device (2), the helical conical rotor (2E) is fixed to the shaft (2A), by means of keyways and the fixing nut (2F), and can also be fixed with bolts, welds, pins or flanges.

In the triple rotor stirring device (2), the helical conical rotor (2E) has helical blades at an angle of 12 degrees with respect to the coaxial axis of the rotor (2E), being able to reduce or increase its angle with respect to the coaxial axis rotor (2E).

In the triple rotor stirring device (2), the helical conical rotor (2E) has 10 helical fins distributed radially with respect to the coaxial axis of the rotor (2E), being able to reduce or increase the number of fins.

In the triple rotor stirring device (2), the helical conical rotor (2E), has a diameter and a height that depends on the size of the cell, if the size of the cell increases, the diameter of the rotor and its height also increase.

In the triple rotor stirring device (2), the shaft (2A) is hollow inside to allow air to be injected into the flotation cell, and it can be solid.

In the triple rotor stirring device (2), the shaft (2A) is manufactured as a single piece. In the triple rotor stirring device (2), the shaft (2A) is manufactured in several parts and can be assembled using flanges, bolts, welding or pins.

In the suction device (3), the cylindrical ring (3A) is mounted on the upper part of the suction tube (3C).

In the suction device (3), the cylindrical ring (3A), has a vertical flange (3E) to adjust the union and tighten, being able to have two or more union flanges.

The aspiration device (3), the cylindrical ring (3A), has a vertical flange (3E), to adjust the union and tighten against the aspiration tube, and can also be fixed by means of a horizontal flange, welding, pins or bolts.

In the suction device (3), the cylindrical ring (3A), and the suction tube (3C), are manufactured as independent elements, but they can be manufactured as a single element.

In the suction device (3), the cylindrical ring (3A), has 6 perforations distributed radially with respect to the coaxial axis of the cylindrical ring (3A), being able to reduce or increase the number of perforations.

In the suction device (3), the cylindrical ring (3A), has perforations of 10 cm in diameter, distributed radially with respect to the coaxial axis of the cylindrical ring (3A), being able to reduce or increase the diameter of the perforations.

In the suction device (3), the cylindrical ring (3A), has a diameter and a height that depends on the size of the cell, if the size of the cell increases, the diameter of the ring (3A) and its height also increase .

In the suction device (3), the cylindrical ring (3A) is made of carbon steels, but they can be made of other ferrous and non-ferrous alloys such as aluminum or bronzes, organic materials such as wood, composite materials such as fiberglass or carbon fiber, plastics such as polyvinyl chloride or polyethylene, or any other material that supports the loads and mechanical conditions required.

In the suction device (3), the cylindrical ring (3A), has a protective coating for wear in polyurethane, but it can be covered by natural rubber, neoprene rubber, nitrile, ceramic coatings, liquid steels, anti-abrasive paints, polyethylene , polymers or wear plates.

In the suction device (3), the suction tube (3C) is supported on the false bottom (3D) (figure 5).

In the suction device (3), the suction tube (3C) reaches the level of the lower part of the second rotor (2C). Being able to increase or decrease this height.

In the aspiration device (3), the aspiration tube (3C) in the lower part, has 6 perforations distributed radially with respect to the coaxial axis of the aspiration tube (3C), being able to reduce or increase the number of perforations.

In the aspiration device (3), the aspiration tube (3C) in the lower part, has a cylindrical area of perforations distributed radially with respect to the coaxial axis of the aspiration tube (3C), being able to have a cylindrical, conical conical area square-based, conical with a plurality of sided base. In the aspiration device (3), the aspiration tube (3C), has perforations of 10 cm in diameter, distributed radially with respect to the coaxial axis of the aspiration tube (3C), being able to reduce or increase the diameter of the perforations.

In the aspiration device (3), the aspiration tube (3C), has a diameter and a height that depends on the size of the cell, if the size of the cell increases, the diameter of the aspiration tube (3C), and their height also increase.

In the suction device (3), the suction tube (3C) is mounted on the false bottom and is fixed by bolting the horizontal flange (31). being able to be fixed with welding or pins.

In the aspiration device (3), the aspiration tube (3C), and the false bottom (3D), are manufactured as independent elements, but they can be manufactured as a single element.

In the suction device (3), the suction tube (3C) is made of carbon steels, but they can be made of other ferrous and non-ferrous alloys such as aluminum or bronze, organic materials such as wood, composite materials such as fiberglass. glass or carbon fiber, plastics such as polyvinyl chloride or polyethylene, or any other material that supports the loads and mechanical conditions required.

In the suction device (3), the suction tube (3C), has a protective coating for wear in polyurethane, but it can be covered by natural rubber, neoprene rubber, nitrile, ceramic coatings, liquid steels, anti-abrasive paints, polyethylene, polymers or wear plates.

Claims

LETTER OF CLAIMS 1. System for flotation cell, used to separate hydrophobic particles from a mixture of particles and liquid, and which also serves to eliminate stagnation, reduce energy consumption and reduce water consumption, CHARACTERIZED because it comprises: a. A triple rotor stirring device (2) (figure 2), which is composed of: i. an axis centered inside the cell arranged vertically (2A), which goes from the pulley (2J) of the cell to the bottom of the cell. At the top of the shaft there is an ii. an axis centered inside the cell arranged vertically (2A), which goes from the pulley (2J) of the cell to the bottom of the cell. At the top of the shaft there is a iii. pulley (2J) that transmits the movement to the shaft (2A), then goes the iv. bearing holder (2K) which is fixed to the support structure (2L). Three rotors are mounted on said shaft. The first is a v. cylindrical straight-finned rotor (2B), which is located in the upper part inside the cell tank. And it is fixed to the shaft by adjusting cones and keyways. This rotor is completely submerged below the level of the pulp and on the cylindrical ring (3A). The rotation of this rotor produces two vortices, one in the upper part that allows air at atmospheric pressure to enter the pulp and a second vortex in the lower part that allows the pulp to be suctioned through the suction tube (3C) . In the center of the rotor, the pulp meets the air and this mixture is centrifuged and expelled against the disperser (ID) and the skirts (1E). The disperser (ID) and the skirts (1E) are supported in the lower part of the air chamber (1C). The second is a vi. cylindrical rotor with inclined blades (2C), and is attached to the lower part of the first rotor (2B). And it is fixed to the shaft by adjusting cones and keyways. At the bottom of the rotor there is a fixing nut (21). This rotor (2C) works inside the cylindrical ring (3 A) and fulfills two functions. The first function is to depressurize the inner zone of the ring (3A) to facilitate the rise of the pulp into the suction tube (3C) and the second is to direct the flow to the upper rotor (2B). The third is a vii. conical rotor with helical blades (2F), and is located in the lower part of the shaft (2 A) at the height of the false bottom (3D) of the cell (1). And it is fixed to the shaft by adjusting cones and keyways. This rotor (3D) fulfills several functions, starting by keeping the solids in the lower part of the cell in suspension, avoiding their sedimentation, increasing the flow of pulp into the suction tube, increasing the speeds in the perforations of the false bottom avoiding anchoring in those areas. At the bottom of the rotor there is a viii. fixing nut (2F). Between the rotors (2C) and (2E), there is an ix. Cover cone (2D) mounted concentrically on the shaft (2A), the cover cone (2D) makes it possible to protect the shaft and direct the solid and liquid particles towards the cylindrical rotors (2C) and (2B). x. The drive shaft (2A) has a cavity inside (2H) along the entire shaft (2A). This cavity allows forced air to be injected in the event that the self-aspiration air is insufficient for the process. It allows to inject air or gases that enter the mixture of particles and liquid for about xi. ducts (2G) connected to holes between the helical fins of the helical conical rotor (2E), allowing to improve the air distribution inside the cell (1), increasing the probability of adhesion of the valuable particles with the bubbles, which contributes to a higher percentage of recovery. xii. In the triple rotor stirring device (2), the intermediate element (2D) has an inverted cone geometry with an angle of 10 degrees xiii. In the triple rotor stirring device (2) (figure 2), the shaft (2A), the upper cylindrical rotor (2B), the intermediate rotor (2C), the covering cone (2D) and the conical rotor (2E ) are independent elements. xiv. In the triple rotor stirring device (2), the shaft (2A), the upper cylindrical rotor (2B), the intermediate rotor (2C), the covering cone (2D) and the conical rotor (2E), are manufactured with carbon steels. xv. In the triple rotor stirring device (2), the shaft (2A), the upper cylindrical rotor (2B), the intermediate rotor (2C), the covering cone (2D) and the conical rotor (2E), have a Polyurethane wear protection coating. xvi. In the triple rotor stirring device (2), the straight-finned cylindrical rotor (2B), located in the upper part inside the cell, is fixed to the shaft (2A), by means of keyways and adjustment cones. xvii. In the triple rotor stirring device (2), the straight-finned cylindrical rotor (2B), located on the top inside the cell, has its straight fins. xviii. In the triple rotor stirring device (2), the straight-finned cylindrical rotor (2B), located at the top inside the cell, has 10 fins distributed radially with respect to the coaxial axis of the rotor (2C). xix. In the triple rotor stirring device (2), the straight-finned cylindrical rotor (2B), located at the top inside the cell, has a diameter and a height that depends on the size of the cell. xx. In the triple rotor stirring device (2), the inclined finned cylindrical rotor (2C) is fixed to the shaft (2A), by means of keyways and the fixing nut (21). xxi. In the triple rotor stirring device (2), the inclined vane cylindrical rotor (2C) has its fins at an angle of 5 degrees. xxii. In the triple rotor stirring device (2), the inclined vane cylindrical rotor (2C) has 10 helical vanes distributed radially with respect to the coaxial axis of the rotor (2C). xxiii. In the triple rotor stirring device (2), the inclined finned cylindrical rotor (2C) has a diameter and a height that depends on the size of the cell. xxiv. In the triple rotor stirring device (2), the helical conical rotor (2E) is fixed to the shaft (2A), by means of keyways and the fixing nut (2F). xxv. In the triple rotor stirring device (2), the helical conical rotor (2E) has helical blades at an angle of 12 degrees with respect to the coaxial axis of the rotor (2E). xxvi. In the triple rotor stirring device (2), the helical conical rotor (2E) has 10 helical fins distributed radially with respect to the coaxial axis of the rotor (2E). xxvii. In the triple rotor stirring device (2), the helical conical rotor (2E) has a diameter and a height that depends on the size of the cell xxviii. In the triple rotor stirring device (2), the shaft (2A) is hollow inside to allow air to be injected into the flotation cell. xxix. In the triple rotor stirring device (2), the shaft (2A) is manufactured as a single piece. b. The second is a suction device (3) (figure 5), which is composed of: i. a cylindrical ring (3A) of greater height with ii. lateral perforations (3B) and with a iii. flange (3E) to adjust the union and tighten, which is mounted on the top of the iv. suction tube (3C). In turn, the suction tube (3C) is supported on the v. false bottom (3D) and reaches the height of the lower part of the second rotor (2C). The suction tube has vi. perforations at the bottom (3F). vii. The function of the cylindrical ring (3A) of greater height and with lateral perforations (3B) is to increase the flow inside the tube by reducing and controlling the vortex that is generated in this area. In this way, the energy that was previously used in the vortex is used to use it to increase the flow inside the suction tube (3C). The lateral perforations (3B) allow to regulate how much of the vortex flow will re-enter the upper rotor (2B). The viii. lateral perforations (3F) in the lower part of the aspiration tube (3C) allow to increase and improve the recirculation flow of pulp and air bubbles into the aspiration tube and cell. The suction subsystem is supported on an ix. false bottom (3D), which in turn is supported by the x. 3G supports, which in turn are supported by the xi. pond bottom (IB) of cell (1). xii. In the suction device (3), the suction tube (3C) is supported on the false bottom (3D) (figure 5). xiii. In the suction device (3), the suction tube (3C) reaches the level of the lower part of the second rotor (2C). xiv. In the aspiration device (3), the aspiration tube (3C) at the bottom, has 6 perforations distributed radially with respect to the coaxial axis of the aspiration tube (3C). xv. In the aspiration device (3), the aspiration tube (3C) at the bottom, has a cylindrical area of perforations distributed radially with respect to the coaxial axis of the aspiration tube (3C). xvi. In the aspiration device (3), the aspiration tube (3C), has perforations of 10 cm in diameter, distributed radially with respect to the coaxial axis of the aspiration tube (3C). xvii. In the aspiration device (3), the aspiration tube (3C), has a diameter and a height that depends on the size of the cell. xviii. In the suction device (3), the suction tube (3C) is mounted on the false bottom and is fixed by bolting the horizontal flange (31). xix. In the suction device (3), the suction tube (3C), and the false bottom (3D), are manufactured as independent elements. xx. In the suction device (3), the suction tube (3C) is made of carbon steels. xxi. In the suction device (3), the suction tube (3C) has a polyurethane wear protection coating. 2. Triple rotor stirring device (2), used to separate hydrophobic particles from a mixture of particles and liquid, and which also serves to eliminate stagnation, reduce energy consumption and reduce water consumption, CHARACTERIZED because it comprises: i . an axis centered inside the cell arranged vertically (2A), which goes from the pulley (2J) of the cell to the bottom of the cell. At the top of the shaft there is an ii. pulley (2J) that transmits the movement to the shaft (2A), then goes the iii. bearing holder (2K) which is fixed to the support structure (2L). Three rotors are mounted on said shaft. The first is an iv. cylindrical straight-finned rotor (2B), which is located in the upper part inside the cell tank. And it is fixed to the shaft by adjusting cones and keyways. This rotor is completely submerged below the level of the pulp and on the cylindrical ring (3A). The rotation of this rotor produces two vortices, one in the upper part that allows air at atmospheric pressure to enter the pulp and a second vortex in the lower part that allows the pulp to be suctioned through the suction tube (3C) . In the center of the rotor, the pulp meets the air and this mixture is centrifuged and expelled against the disperser (ID) and the skirts (1E). The second is a v. cylindrical rotor with inclined blades (2C), and is attached to the lower part of the first rotor (2B). And it is fixed to the shaft by adjusting cones and keyways. At the bottom of the rotor there is a fixing nut (21). This rotor (2C) works inside the cylindrical ring (3A) and fulfills two functions. The first function is to depressurize the inner zone of the ring (3A) to facilitate the rise of the pulp into the suction tube (3C) and the second is to direct the flow to the upper rotor (2B). The third is a vi. conical rotor with helical blades (2F), and is located in the lower part of the shaft (2A) at the height of the false bottom (3D) of the cell (1). Y is fixed to the shaft by adjusting cones and keyways. This rotor (3D) fulfills several functions, starting by keeping the solids in the lower part of the cell in suspension, avoiding their sedimentation, increasing the flow of pulp into the suction tube, increasing the speeds in the perforations of the false bottom avoiding anchoring in those areas. At the bottom of the rotor there is a vii. fixing nut (2F). Between the rotors (2C) and (2E), there is a viii. Cover cone (2D) mounted concentrically on the shaft (2A), the cover cone (2D) makes it possible to protect the shaft and direct the solid and liquid particles towards the cylindrical rotors (2C) and (2B). ix. The drive shaft (2A) has a cavity inside (2H) along the entire shaft (2A). This cavity allows forced air to be injected in case the self-suction air is insufficient for the process. It allows to inject air or gases that enter the mixture of particles and liquid for about x. ducts (2G) connected to holes between the helical fins of the helical conical rotor (2E), allowing to improve the air distribution inside the cell (1), increasing the probability of adhesion of the valuable particles with the bubbles, which contributes to a higher percentage of recovery. xi. In the triple rotor stirring device (2), the intermediate element (2D) has an inverted cone geometry with an angle of 10 degrees xii. In the triple rotor stirring device (2) (figure 2), the shaft (2A), the upper cylindrical rotor (2B), the intermediate rotor (2C), the covering cone (2D) and the conical rotor (2E ) are independent elements. xiii. In the triple rotor stirring device (2), the shaft (2A), the upper cylindrical rotor (2B), the intermediate rotor (2C), the covering cone (2D) and the conical rotor (2E), are manufactured with carbon steels. xiv. In the triple rotor stirring device (2), the shaft (2A), the upper cylindrical rotor (2B), the intermediate rotor (2C), the covering cone (2D) and the conical rotor (2E), have a Polyurethane wear protection coating. xv. In the triple rotor stirring device (2), the straight-finned cylindrical rotor (2B), located in the upper part inside the cell, is fixed to the shaft (2A), by means of keyways and adjustment cones. xvi. In the triple rotor stirring device (2), the straight-finned cylindrical rotor (2B), located on the top inside the cell, has its straight fins. xvii. In the triple rotor stirring device (2), the straight-finned cylindrical rotor (2B), located at the top inside the cell, has 10 fins distributed radially with respect to the coaxial axis of the rotor (2C). xviii. In the triple rotor stirring device (2), the straight-finned cylindrical rotor (2B), located at the top inside the cell, has a diameter and a height that depends on the size of the cell. xix. In the triple rotor stirring device (2), the inclined finned cylindrical rotor (2C) is fixed to the shaft (2A), by means of keyways and the fixing nut (21). xx. In the triple rotor stirring device (2), the inclined vane cylindrical rotor (2C) has its fins at an angle of 5 degrees. xxi. In the triple rotor stirring device (2), the inclined vane cylindrical rotor (2C) has 10 helical vanes distributed radially with respect to the coaxial axis of the rotor (2C). xxii. In the triple rotor stirring device (2), the inclined finned cylindrical rotor (2C) has a diameter and a height that depends on the size of the cell. xxiii. In the triple rotor stirring device (2), the helical conical rotor (2E) is fixed to the shaft (2A), by means of keyways and the fixing nut (2F). xxiv. In the triple rotor stirring device (2), the helical conical rotor (2E) has helical blades at an angle of 12 degrees with respect to the coaxial axis of the rotor (2E). xxv. In the triple rotor stirring device (2), the helical conical rotor (2E) has 10 helical fins distributed radially with respect to the coaxial axis of the rotor (2E). xxvi. In the triple rotor stirring device (2), the helical conical rotor (2E) has a diameter and a height that depends on the size of the cell xxvii. In the triple rotor stirring device (2), the shaft (2A) is hollow inside to allow air to be injected into the flotation cell. xxviii. In the triple rotor stirring device (2), the shaft (2A) is manufactured as a single piece. 3. The triple rotor stirring device (2) used in the flotation cell system (1) (figure 2), according to claim 2, CHARACTERIZED because it works with three rotors (2B), (2C) and (2E), and with the cover cone (2D). 4. The triple rotor stirring device (2) used in the flotation cell system (1) (figure 7), according to claim 2, CHARACTERIZED because it works with two rotors (2B), (2E), and with the coating (2D). 5. The triple rotor stirring device (2) used in the flotation cell system (1) (figure 8), according to claim 2, CHARACTERIZED because it works with two rotors (2B), (2C). 6. The triple rotor stirring device (2) and the aspiration device (3), according to claim 1, CHARACTERIZED because they can be used in open or sealed cells. 7. The triple rotor stirring device (2), according to claim 2, CHARACTERIZED in that the intermediate element (2D) has an inverted cone geometry with an angle of 10 degrees, being able to reduce or increase its angle with respect to its axis coaxial. 8. In the triple rotor stirring device (2), according to claim 2, CHARACTERIZED in that the shaft (2A), the upper cylindrical rotor (2B), the intermediate rotor (2C), the covering cone (2D) and the conical rotor (2E) are independent elements. Being able to be manufactured as integrated or solidarity elements. 9. The triple rotor stirring device (2) (figure 2), according to claim 2, CHARACTERIZED in that the upper cylindrical rotor (2B) and the intermediate rotor (2C) are independent elements. Being able to be manufactured as integrated or solidarity elements. 10. The triple rotor stirring device (2) (figure 2), according to claim 2, CHARACTERIZED in that the upper cylindrical rotor (2B), the intermediate rotor (2C) and the covering cone (2D) are independent elements. Being able to be manufactured as integrated or solidarity elements. 11. The triple rotor stirring device (2) (figure 2), according to claim 2, CHARACTERIZED in that the upper cylindrical rotor (2B), the intermediate rotor (2C), the covering cone (2D) and the conical rotor ( 2E), are independent elements. Being able to be manufactured as integrated or solidarity elements. 12. The triple rotor stirring device (2) (figure 2), according to claim 2, CHARACTERIZED in that the covering cone (2D) and the conical rotor (2E) are independent elements. Being able to be manufactured as integrated or solidarity elements. 13. The triple rotor stirring device (2) (figure 2), according to claim 2, CHARACTERIZED in that the shaft (2A), the upper cylindrical rotor (2B), the intermediate rotor (2C), the covering cone (2D ) and the conical rotor (2E), are made of carbon steels, but they can be made of other ferrous, non-ferrous alloys such as aluminum or bronzes, organic materials such as wood, composite materials such as fiberglass or carbon fiber, plastics such as polyvinyl chloride or polyethylene, or any other material that supports the loads and mechanical conditions required. 14. The triple rotor stirring device (2) (figure 2), according to claim 2, CHARACTERIZED in that the shaft (2A), the upper cylindrical rotor (2B), the intermediate rotor (2C), the covering cone (2D ) and the conical rotor (2E), have a polyurethane wear protection coating, but can be covered by natural rubber, neoprene rubber, nitrile, ceramic coatings, liquid steels, anti-abrasive paints, polyethylene, polymers, wear plates. 15. The triple rotor stirring device (2), according to claim 2, CHARACTERIZED in that the cylindrical rotor with straight blades (2B), located in the upper part inside the cell, is fixed to the shaft (2A), by means of keyways and adjustment cones, and can also be fixed with bolts, welds, pins or flanges. 16. The triple rotor stirring device (2), according to claim 2, CHARACTERIZED in that the cylindrical rotor with straight blades (2B), located at the top inside the cell, has its blades straight, and can be manufactured at an angle with respect to to the vertical plane positioned on its coaxial or helical axis. 17. The triple rotor stirring device (2), according to claim 2, CHARACTERIZED in that the cylindrical rotor with straight blades (2B), located on the top inside the cell, has 10 blades distributed radially with respect to the coaxial axis of the rotor (2C), being able to reduce or increase the number of fins. 18. The triple rotor stirring device (2), according to claim 2, CHARACTERIZED in that the cylindrical rotor with straight blades (2B), located in the upper part inside the cell, has a diameter and a height that depends on the size of the the cell, if the size of the cell increases, the diameter of the rotor and its height also increase. 19. The triple rotor stirring device (2), according to claim 2, CHARACTERIZED in that the cylindrical rotor with inclined blades (2C) is fixed to the shaft (2A), by means of keyways and the fixing nut (21), and can also be fixed with bolts, welds, pins or flanges. 20. The triple rotor stirring device (2), according to claim 2, CHARACTERIZED in that the cylindrical rotor with inclined blades (2C) has its fins at an angle of 5 degrees, being able to reduce or increase its angle with respect to the positioned vertical plane on its coaxial axis. 21. The triple rotor stirring device (2), according to claim 2, CHARACTERIZED in that the cylindrical rotor with inclined blades (2C) has 10 helical blades distributed radially with respect to the coaxial axis of the rotor (2C), being able to reduce or increase the number of fins. 22. The triple rotor stirring device (2), according to claim 2, CHARACTERIZED in that the cylindrical rotor with inclined blades (2C), has a diameter and a height that depends on the size of the cell, if the size of the cell increases , the diameter of the rotor and its height also increase. 23. The triple rotor stirring device (2), according to claim 2, CHARACTERIZED in that the helical conical rotor (2E) is fixed to the shaft (2A), by means of keyways and the fixing nut (2F), and can also be fixed with bolts , welds, pins or flanges. 24. The triple rotor stirring device (2), according to claim 2, CHARACTERIZED in that the helical conical rotor (2E) has helical fins at an angle of 12 degrees with respect to the coaxial axis of the rotor (2E), being able to reduce or increase its angle with respect to the coaxial axis of the rotor (2E). 25. The triple rotor stirring device (2), according to claim 2, CHARACTERIZED in that the helical conical rotor (2E) has 10 helical fins distributed radially with respect to the coaxial axis of the rotor (2E), being able to reduce or increase the quantity fins. 26. The triple rotor stirring device (2), according to claim 2, CHARACTERIZED in that the helical conical rotor (2E) has a diameter and a height that depends on the size of the cell, if the size of the cell increases, the rotor diameter and height also increase. 27. The triple rotor stirring device (2), according to claim 2, CHARACTERIZED in that the shaft (2A) is hollow inside to allow air to be injected into the flotation cell, being able to be solid. 28. The triple rotor stirring device (2), according to claim 2, CHARACTERIZED in that the shaft (2A) is manufactured as a single piece, being able to be manufactured in several parts and to be assembled using flanges, bolts, welding or pins. 29. Suction device (3), used to separate hydrophobic particles from a mixture of particles and liquid, and which also serves to eliminate stagnation, reduce energy consumption and reduce water consumption, CHARACTERIZED because it comprises: i. a cylindrical ring (3 A) of greater height with ii. lateral perforations (3B) and with a iii. flange (3E) to adjust the union and tighten, which is mounted on the top of the iv. suction tube (3C). In turn, the suction tube (3C) is supported on the v. false bottom (3D) and reaches the height of the lower part of the second rotor (2C). The suction tube has vi. perforations at the bottom (3F). vii. The function of the cylindrical ring (3A) of greater height and with lateral perforations (3B) is to increase the flow inside the tube by reducing and controlling the vortex that is generated in this area. In this way, the energy that was previously used in the vortex is used to use it to increase the flow inside the suction tube (3C). The lateral perforations (3B) allow to regulate how much of the vortex flow will re-enter the upper rotor (2B). The viii. lateral perforations (3F) in the lower part of the aspiration tube (3C) allow to increase and improve the recirculation flow of pulp and air bubbles into the aspiration tube and cell. The suction subsystem is supported on an ix. false bottom (3D), which in turn is supported by the x. 3G supports, which in turn are supported by the xi. pond bottom (IB) of cell (1). xii. In the suction device (3), the suction tube (3C) is supported on the false bottom (3D) (figure 5). xiii. In the suction device (3), the suction tube (3C) reaches the level of the lower part of the second rotor (2C). xiv. In the aspiration device (3), the aspiration tube (3C) at the bottom, has 6 perforations distributed radially with respect to the coaxial axis of the aspiration tube (3C). xv. In the aspiration device (3), the aspiration tube (3C) at the bottom, has a cylindrical area of perforations distributed radially with respect to the coaxial axis of the aspiration tube (3C). xvi. In the aspiration device (3), the aspiration tube (3C), has perforations of 10 cm in diameter, distributed radially with respect to the coaxial axis of the aspiration tube (3C). xvii. In the aspiration device (3), the aspiration tube (3C), has a diameter and a height that depends on the size of the cell. xviii. In the suction device (3), the suction tube (3C) is mounted on the false bottom and is fixed by bolting the horizontal flange (31). xix. In the aspiration device (3), the aspiration tube (3C), and the false bottom (3D), are manufactured as independent elements.In the aspiration device (3), the aspiration tube (3C), is manufactured with carbon steels. xx. In the suction device (3), the suction tube (3C) has a polyurethane wear protection coating. 30. The suction device (3), according to claim 29, CHARACTERIZED in that the cylindrical ring (3 A) is mounted on the upper part of the suction tube (3C). 31. The suction device (3), according to claim 29, CHARACTERIZED in that the cylindrical ring (3 A) has a vertical flange (3E) to adjust the joint and tighten, being able to have two or more joining flanges. 32. The suction device (3), according to claim 29, CHARACTERIZED in that the cylindrical ring (3 A) has a vertical flange (3E), to adjust the union and tighten against the suction tube, and can also be fixed by means of a flange horizontal, weld, pins or bolts. 33. The aspiration device (3), according to claim 29, CHARACTERIZED in that the cylindrical ring (3A), and the aspiration tube (3C), are manufactured as independent elements, but can be manufactured as a single element. 34. The suction device (3), according to claim 29, CHARACTERIZED in that the cylindrical ring (3A) has 6 perforations distributed radially with respect to the coaxial axis of the cylindrical ring (3 A), being able to reduce or increase the number of perforations. 35. The suction device (3), according to claim 29, CHARACTERIZED in that the cylindrical ring (3A), has perforations of 10 cm in diameter, distributed radially with respect to the coaxial axis of the cylindrical ring (3A), being able to reduce or increase the diameter of the perforations. 36. The suction device (3), according to claim 29, CHARACTERIZED in that the cylindrical ring (3A) has a diameter and a height that depends on the size of the cell, if the size of the cell increases, the diameter of the ring ( 3 A) and their height also increases. 37. The suction device (3), according to claim 29, CHARACTERIZED in that the cylindrical ring (3A) is made of carbon steels, but they can be made of other alloys ferrous, non-ferrous such as aluminum or bronze, organic materials such as wood, composite materials such as fiberglass or carbon fiber, plastics such as polyvinyl chloride or polyethylene, or any other material that supports the loads and mechanical conditions required. 38. The suction device (3), according to claim 29, CHARACTERIZED in that the cylindrical ring (3A) has a polyurethane wear protection coating, but it can be covered by natural rubber, neoprene rubber, nitrile, ceramic coatings, liquid steels, anti-abrasive paints, polyethylene, polymers or wear plates. 39. The suction device (3), according to claim 29, CHARACTERIZED in that the suction tube (3C) is supported on the false bottom (3D) (figure 5) and they are independent pieces. 40. The suction device (3), according to claim 39, CHARACTERIZED in that the suction tube (3C) is supported on the false bottom (3D) (figure 5) and they are independent pieces, being able to be integrated pieces. 41. The aspiration device (3), the aspiration tube (3C), according to claim 29, CHARACTERIZED in that it reaches the height of the lower part of the second rotor (2C). Being able to increase or decrease this height. 42. The aspiration device (3), according to claim 29, CHARACTERIZED in that the aspiration tube (3C) in the lower part, has 6 perforations distributed radially with respect to the coaxial axis of the aspiration tube (3C), being able to reduce or increase the number of perforations. 43. The aspiration device (3), according to claim 29, CHARACTERIZED in that the aspiration tube (3C) in the lower part, has a cylindrical area of perforations distributed radially with respect to the coaxial axis of the aspiration tube (3C), being able have a cylindrical conical zone, conical with a square base, conical with a base with plurality of sides. 44. The aspiration device (3), according to claim 29, CHARACTERIZED in that the aspiration tube (3C), has perforations of 10 cm in diameter, distributed radially with respect to the coaxial axis of the aspiration tube (3C), being able to reduce or increase the diameter of the perforations. 45. The aspiration device (3), according to claim 29, CHARACTERIZED in that the aspiration tube (3C) has a diameter and a height that depends on the size of the cell, if the size of the cell increases, the diameter of the tube suction (3C), and its height also increases. 46. The suction device (3), according to claim 29, CHARACTERIZED in that the suction tube (3C) is mounted on the false bottom and is fixed by bolting the horizontal flange (31). being able to be fixed with welding or pins. 47. The aspiration device (3), according to claim 29, CHARACTERIZED in that the aspiration tube (3C), and the false bottom (3D), are manufactured as independent elements, but can be manufactured as a single element. 48. The aspiration device (3), according to claim 29, CHARACTERIZED in that the aspiration tube (3C) is manufactured with carbon steels, but they can be manufactured in other ferrous, non-ferrous alloys such as aluminum or bronzes, organic materials such as wood, composite materials such as fiberglass or carbon fiber, plastics such as polyvinyl chloride or polyethylene, or any other material that supports the loads and mechanical conditions required. 49. The suction device (3), according to claim 29, CHARACTERIZED in that the suction tube (3C) has a polyurethane wear protection coating, but can be covered by natural rubber, neoprene rubber, nitrile, ceramic coatings , liquid steels, anti-abrasive paints, polyethylene, polymers or wear plates.