SU1349792A1 - Apparatus for classifying mineral raw material - Google Patents

Abstract

The invention relates to devices of the centrifugal principle of action and m. applied in mining, ore mining and other industries. The purpose of the invention is to increase the efficiency of the classification process by changing the perforations. The device includes a housing (K) 1 with nozzles (P) for supplying the initial pulp 2, for withdrawing condensed sl

Description

product 3 and filtrate 4 and filter element (FE) 5. The latter is made of elastic material in the form of a perforated cylinder and mounted on P 4 concentric K 1. - The upper part of FE 5 is fixedly fixed on P 4, the bottom part is connected to the pusher b, mounted concentrically in the P 4c with the possibility of movement in the axial direction. Inside the PV 5 concentric mounted spring expander. Pulp through P 2 enters tangen1

The invention relates to devices of the centrifugal principle of action and is intended for the classification of mineral raw materials by size in the mining and processing, mining and other industries.

The aim of the invention is to increase the efficiency of the classification process by resizing the perforations.

Fig. 2 shows the device, general view; Figures 2 and 3 show the surface areas of the filter element in an unstable and stretched condition, respectively; figure 4 is a filter element with expander; Fig. 5 shows a portion of the filtering surface of the filter element with an expander in an extended state.

A device for classifying a mineral raw material includes a housing 1 with nozzles for supplying raw pulp 2, withdrawing condensed product 3 and filtrate 4, a filtering element 5 made of an elastic material in the form of a perforated cylinder mounted concentrically with housing 1 on the filtrate outlet 4 . In this case, the upper part of the filter element 5 is fixedly mounted on the nozzle 4 of the filtrate outlet, and the lower part is connected to the pusher. 6, mounted concentric in the pipe 4 outlet-filtrate with the ability

axial movement. one

The device is equipped with a spring expander 7 mounted concentrically inside the filter element 5

Specially in K 1, it twists. Under the action of centrifugal force, the heavy grains move to the wall K 1 and are output through P 3. The liquid moves to the axis of the device, passes through the perforations of the FE 5 and is output through P 4. The grains larger than the size of the FE openings 5 are retained by him The size of the perforation holes of the PE 5 is made by stretching the PE 5 with the pusher 6. I Cp f-ly, 5 il ..

The device works as follows.

The pulp enters tangentially into the body I through the pipe 2

supplying the original pulp and twisting. Under the action of centrifugal force, the heavy grains move to the wall of the housing I and are discharged through the branch pipe 3 of the condensed product.

The fluid travels to the axis of the apparatus, passes through the perforations of the rotating element 5, which detains grains larger than the size of the holes, and then is discharged through the nozzle 4 of the filtrate.

In the mining and processing industry enterprises in most cases it is necessary to carry out processes

separating and classifying pulps with time-varying characteristics; under conditions of large-scale production, the ability to maintain constant the parameters of the pulp being processed (concentration, grain composition of the solid phase, etc.) is practically absent.

The deviation of the values of these parameters from the calculated ones, in turn, causes a drop in the efficiency of the process in classifiers with a fixed technical characteristic. Such apparatuses do not have devices that allow adjustment of the classification indices to compensate for changes in the characteristics of the feed stream.

Stretching with the help of the pusher 6 is an elastic filtering element 5,

the surface of the filter element 5 contributes to its regeneration, preventing the formation of a stable layer of sediment.

You can reduce the characteristic grain size — the size that determines the size of particles that can pass through the filter septum, and thus obtain a filtrate containing smaller grains. The characteristic grain size is reduced due to the change in the shape of the perforated opening of the filter element 5. When mineral raw materials are spread, the corrosive surface of the filter element with corners of the supply of initial ment 5 acquires a hyperbolic pulp and a form of thickened product. When stretching the filtering and filtrate and filtering elements of the element 5, equipped with a spring-made perforated with a booster 7, the surface of the filter is 15 and the installed concentric formula 1. The device for classifying

Element 5 does not change its cylindrical shape. In this case, the characteristic size of the perforations remains constant, although their total area due to the deformation increases. In connection with this, the capacity of both the individual hole and the filter element 5 as a whole is also increased. By changing the throughput of the filter element 5, it is possible to influence the device classification indicators.

For example, with an increase in the transmission direction.

2. The device according to claim 1, about the t of the capacity of the filtering element 5, the concentration of the condensed product will increase, as a result, the fluid flow through the nozzle 4 of the filtrate will increase. The deformation is caused by the fact that it is equipped with a spring reamer installed concentrically inside the filter element.

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the surface of the filter element 5 contributes to its regeneration, preventing the formation of a stable layer of sediment.

mineral raw materials containing a body with nozzles for supplying the initial pulp and withdrawing a condensed product of the filtrate and a filtering element made in the form of perforated or external and installed concentrative mineral raw materials containing a body with nozzles for supplying the original pulp and withdrawing the thickened product and filtrate and a filtering element, made in the form of a perforated cylinder and installed concentric Formula 1. A device for classifying

but the body on the filtrate outlet nozzle, characterized in that, in order to increase the efficiency of the classification process by changing the size of the perforations, it is provided with a pusher located concentrically in the filtrate outlet nozzle, and the filtering element is made of elastic material, with the upper part of the filtering element still fixed on the filtrate outlet pipe, and the lower one is connected with the pusher mounted for movement in interfering with the fact that it is equipped with 1 OI and 000

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Editor S.Pekar

Compiled by L. Kasatochkina

Tehred A. Kravchuk Proofreader L. Patay

Order 5211/5 Circulation 509Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Claims (3)

Claim 1. A device for classifying mineral raw materials containing a short-wound surface of the filter element 5 acquires a hyperbolic shape. When stretching the filter element 5, equipped with a spring expander 7, the surface of the filter element 5 does not change its cylindrical shape. In this case, the characteristic size of the perforations remains constant, although their total area increases due to deformation. In this regard, increases the throughput of both a single hole and the filter element 5 as a whole. Changing the bandwidth of the filter element 5, you can influence the classification indicators of the device. For example, with an increase in the throughput of the filter element 5, the concentration of the condensed product with tubes for supplying the initial pulp and discharge of the condensed product and filtrate and a filter element made in the form of a perforated 15 cylinder and mounted concentrically to the housing on the filtrate discharge pipe, characterized in that, in order to increase the efficiency of the classification process by changing the size of perforations, it is equipped with a pusher located concentrically in the outlet of the filtrate, and ltruyuschy member is made of elastic materia25 la, the upper portion of the filter element is fixedly secured to the filtrate discharge pipe, and the bottom is connected to a pusher mounted movably in wasp 30th direction. 2. The device according to claim 1, characterized in that it supplies will increase, as a result, the flow rate of liquid through the pipe will increase 4 drainage of the filtrate. Deformation by a spring-loaded expander mounted concentrically inside the filter element. ; o o o o o b b o o oo (! o o ooo Fig yjcnnM 'go About LLC r o oood [0 0 000. b oo ood jboM FIG. 5