RU2165299C1 - Three-phase concentrator for separation of precious and toxic minerals - Google Patents

Abstract

FIELD: concentration of ores and placers; separation of concentrate at final stages of concentration process. SUBSTANCE: proposed concentrator has drive, separation chamber with heavy particle settling surface, compartment for particles of average density and compartment for particles of low density with overflow lip which is concentric relative to walls of separation chamber. Drive is connected with centrifugal action exciter by means of screw joint regularly engaged by means of sleeve; exciter is mounted at angle relative to horizontal plane of separation chamber and perpendicularly relative to heavy particle settling surface. Centrifugal action exciter is provided with reflectors made in pairs at shift relative to center of separation in vertical line. Lower members of reflector are shifted relative to generatrix of opposite upper members of reflectors. Surface of settling of average density particles is concentric relative to walls of separation chamber and is mounted at angle relative to heavy particle settling surface under low-density particle settling surface. EFFECT: improved quality of separation; increased productivity in processing the concentrate containing fine heavy fraction of various forms. 2 dwg

Description

 The invention relates to the enrichment of placers and ores at the final stages of separation of the concentrate containing valuable mineral particles of high density and mineral particles of medium density with toxic elements; from raw materials with a predominance of a small (-0.2 mm) heavy fraction of various forms and a large difference in the density of the separated fractions.

 Known installations, the principle of separation in which is based on an increase in the hydrodynamic parameters of the separated particles due to centrifugal forces [1, 2, 3].

 These plants are not able to efficiently process raw materials with a predominance of a small heavy fraction.

 The closest analogue in terms of the set of essential features and the achieved result when using it is a three-phase single-plane concentrator containing a drive, a separation chamber with a deposition surface of heavy particles, having a compartment for medium-density particles and a compartment for low-density particles with an overflow threshold made concentrically to the walls of the separation chamber [41.

 This installation is not able to efficiently process material with a predominant content of fine heavy fractions.

 The purpose of the invention is to increase the efficiency of extraction of a valuable component and reduce the technological impact on the environment.

 This goal is achieved in that in a three-phase concentrator for the separation of valuable and toxic minerals containing a drive, a separation chamber with a deposition surface of heavy particles, a compartment for medium density particles and a compartment for low density particles with an overflow threshold, made concentrically to the walls of the separation chamber, the drive, by means of a screw connection periodically interfaced with a coupling, connected to a centrifugal exciter installed at an angle to the horizontal plane of the separation chamber I perpendicular to the deposition surface of heavy particles and equipped with radial reflectors, made in pairs with a shift relative to the separation center vertically, while the lower elements of the reflector are offset relative to the generatrix of the opposite upper elements of the reflectors, and the deposition surface of the particles of medium density is made concentric with the walls of the separation chamber and is set at an angle surface deposition of heavy particles under the surface of the deposition of particles of low density, additional feed system in located above the deposition surface of heavy particles.

 Radial reflectors, made in pairs with a displacement relative to the center of separation vertically, allow you to create a stream of particles of centrifugal action and orient them to the separation surfaces.

 The drawings show a three-phase concentrator for the separation of valuable and toxic minerals.

 In FIG. 1 is a general view of a hub without a front wall; in FIG. 2 is a section AA in FIG. 1.

 The three-phase hub contains a drive 1, a separation chamber 2 with a deposition surface of heavy particles 3, a compartment for medium density particles 4 and a compartment for particles of low density 5 with an overflow threshold 6 made concentrically to the walls 7 of separation chamber 2.

 The drive 1 is connected to the centrifugal exciter 8 by means of a screw connection 10 which is periodically mated using the coupling 9. The screw connection 10 consists of a screw 11 rigidly connected to the rod 12 of the hydraulic cylinder 13 and the sleeve 14, which is rigidly connected to the centrifugal exciter 8 and installed in the bearing assembly fifteen.

 The causative agent of centrifugal action 8 is installed at an angle 16 to the horizontal plane 17 of the separation chamber 2 perpendicular to the surface 18 of the deposition of heavy particles 3 and is equipped with radius reflectors 19, made in pairs with a displacement relative to the center of separation 20 vertically of the exciter of centrifugal action 8. The lower elements 21 are additionally offset relative to the generatrix 22 opposite upper elements 23.

 The surface of the deposition of particles of medium density 24 is made concentrically to the walls 7 and installed at an angle of 25 to the surface of the deposition of heavy particles 3 under the surface of the deposition of particles of low density 26.

 An additional water supply system 27 is located above the deposition surface of heavy particles 3.

 The work of a three-phase hub is as follows.

 After the clutch 9 is turned on, the sleeve 14 of the screw connection 10 engages with the screw 11. The hydraulic cylinder 13 of the actuator 1 is turned on, which pushes the rod 12 rigidly connected to the screw 11. The screw 11 starts to move down from the extremely upper position, rotating the sleeve 14 in the bearing assembly 15 and a centrifugal activator 8. Power is supplied, the medium is regulated by an additional water supply system 27.

 Particles receive a hydrodynamic effect, delaminating in density by orienting the causative agent of centrifugal action 8 at an angle of 16 to the horizontal plane 17 of separation chamber 2 perpendicular to 18 of the deposition surface of heavy particles 3 and the influence of radius reflectors 19, made in pairs with a vertical offset from the separation center 20.

 Reflecting from the upper elements 23, the low-density particles fall onto the deposition surface of the low-density particles 26 and through the overflow threshold 6 made concentrically to the walls 7, enter the low-density particle compartment 5.

 Particles of medium density, reflected from the lower elements 21, made with an offset relative to the generatrix 22, fall into the gap between the radius reflectors 19 on the particle deposition surface of medium density 24, which is installed at an angle of 25 to the deposition surface of heavy particles 3, and - in the particle compartment medium density 4.

 The pauses between the rotations of the causative agent of centrifugal action 8 during the reverse stroke of the rod 12 and screw 11 create favorable conditions for enhancing the action of gravitational forces, the influence of particle density on their orientation.

 The next portion of the concentrate is supplied.

 Unloading of the separated fractions is carried out as the pump accumulates through the holes in the lower part of the compartments.

 The installation provides better separation and high productivity of processing concentrate from raw materials with a predominance of a small (-0.2 mm) heavy fraction of various shapes and a large difference in the density of the separated fractions.

 Separation of toxic minerals into a separate fraction regulates the process of utilization and neutralization.

Sources of information
1. Patent RU 2045351 C1 (Shevchuk N.K.), 10.10.95, B 03 B 5/32.

 2. SU 977027 (Irkutsk Polytechnic Institute), 11.30.82, V 03 V 5/32.

 3. UTsK-26-800 Centrifugal separator, Promtehnoresurs JSC.

 4. Patent RU N 2033268 C1, 04/20/95, V 03 V 5/62 (prototype).

Claims (1)

 A three-phase concentrator for the separation of valuable and toxic minerals containing a drive, a separation chamber with a deposition surface of heavy particles, a compartment for medium density particles and a compartment for low density particles with an overflow threshold made concentrically to the walls of the separation chamber, characterized in that the drive is intermittently interfaced with by means of a screw coupling, it is connected with a centrifugal activator mounted at an angle to the horizontal plane of the separation chamber perpendicular to deposition surfaces of heavy particles and equipped with reflectors made in pairs with a vertical offset relative to the separation center, while the lower reflector elements are offset relative to the generatrix of the opposite upper reflector elements, and the medium-density particle deposition surface is made concentric with the walls of the separation chamber and is set at an angle to the heavy deposition surface particles below the surface of the deposition of particles of low density, an additional water supply system is located above the surface deposition of heavy particles.

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