SU1364371A1 - Jet classifier - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to devices for wet gravity concentration of minerals and m. used in the mining industry. The purpose of the invention is to increase the separation efficiency and increase the reliability of the structure. In the loading device in the form of a cylinder (c) 2 of the concentrator, flat sieves 1 are installed at a distance from each other equal to 0.2 of diameter C 2. Under the latter, two conical diffusers D 3 with smaller base to C2 are installed. The outer DZ is coupled with the C2. At the same time, C 2 communicates with D 3 with a divider 4 rigidly mounted on the C2 side on the bottom of the conical bowl 5 with concentric and ring grooves 6. A conical tool (PO) 7 is fitted coaxially with the bowl 5. products of concentration in the form of hollow CB. The distance from the upper edge of the C 8 to the base of: - and PO 7 is 0.06-0.08 of the diameter of the larger base PO 7. At the bottom of the PO 7 there is a collector 9 for the concentrate. The pulp passes through sieves I, D 3 and. the divider 4 and enters the bowl 5. Then a layer of pulp uniformly distributed around the perimeter enters RO 7. The heaviest and largest particles in PO 7 precipitate and are discharged through the collector 9. The pulp flows through C 8 is sent to the dump or to the washout. I il. y s (L 00 9: o / / / 7 7 7 f / / 7 / / / / X X7

Description

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The invention relates to devices for wet gravity beneficiation of minerals and can be used in the mining industry.

The purpose of the invention is to increase the efficiency of separation and improve the reliability of the structure.

The drawing shows a jet concentrator.

The jet concentrator includes flat sieves 1 installed in the loading device in the form of a cylinder 2, which is communicated through successively conical diffusers 3 with equal input sections, with the flow divider 4, with a fixed flow equalizer in the form of a conical bowl 5 equipped with annular riffles mi 6.

A conical tool 7 is located coaxially with the conical bowl 5, in the center of which, at its base, there is an empty cutter 8 in the form of a hollow cylinder. The distance from the upper edge of the cutter 8 to the surface of the working cone is (0.06-0.08) D where D is the diameter of the larger base of the working body. The jet concentrator also has a collector for concentrate 9 and a support form 10.

The hub works as follows.

A pulp containing 35-65 wt.%, Solid, with a particle size of minus 2 (3) mm, is fed to the flow equalizer. With the passage of n outflow through the loading device 2 through the flat sieves 1, the flow velocities are equalized over its cross section. Next, the pulp through the double-ring conical diffuser 3 and the divider 4 enters the conical bowl 5. Concentric rifles 6 facilitate uniform distribution of the pulp over the surface of the bowl 5. As a result, the flow through this leveling system to the working body 7 is uniformly distributed around the perimeter a layer of enriched pulp.

The movement of the pulp flow in the working body 7 is accompanied by the segregation distribution of mineral particles over the cross section of the flow with precipitation

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/ 1 into the sediment of the heaviest and largest grains and with the formation of a bed of precipitated particles. As the center of the working organ is approached, the flow thickens, and, overflowing through the cutter 8, is directed to the dump or to the washout to the next organ, if the concentrator is large. Discharge of precipitated material from the stream, which is the rough concentrate of the beneficiation process at this concentrator, is carried out through the collector 9. By varying the concentrate output from the collector 9, the indicators of the separation process are controlled (yield and quality of tailings and quality of the rough concentrate). The rough concentrate obtained on the jet apparatus is then sent to a finishing operation (for example, to concentration tables).

Claims (1)

Invention Formula An inkjet concentrator comprising a conical working body, a cylinder-shaped loading device, a flow equalizer, a concentrate manifold, and a concentration product cut-off device made in the form of a hollow cylinder, characterized in that, in order to increase the separation efficiency and increase the reliability of the design, it is equipped with two flat sieves, a divider and two diffusers installed coaxially under the loading device with a smaller base to it, while the external diffuser is coupled with the load with a full-time fixture, sieves are installed in the loading fixture at a distance of 0.2d from each other, where d is the diameter of the cylinder of the loading fixture, and the flow equalizer is made in the form of a conical bowl with a bottom facing the loading fixture and with concentric ring grooves located on it , while the divider is installed on the bottom of the conical bowl on the side of the loading device, and the distance from the upper edge of the concentration product cutter to the base of the conical working body is em is from 0.06 D to 0.008 D, where D is the diameter of the larger base of the working body.