RU5934U1 - DEVICE FOR GRAVITATIONAL ENRICHMENT OF HEAVY MINERALS - Google Patents

Abstract

A device for gravitational enrichment of heavy minerals, having a pipe, a rectangular hole covered with a cobalt sieve, a hopper, characterized in that the hopper has the shape of an inverted beveled pyramid, the bottom wall of which is located 2.5 - 3.5 times longer than the hopper wall, into which the flow of water and sand rests, passing through a shaltovy sieve, and a branch pipe with a plug valve for the release of accumulated concentrate.

Description

DEVICE FOR GRAVITY ENRICHMENT

A utility model relates to mineral processing, namely the extraction of gold and other heavy minerals by hydraulic traps.

It is known that for the needs of the building materials industry, tens of millions of cubic meters of sand and gravel mix are extracted annually from river beds, from oblique deviations and beaches. For these purposes, dredging shells are often used, which pump sand and gravel mixture with water through pipelines to the place of its laying for further use. The sand and gravel mixture moves through the pipes at a high speed (up to 10 m / s). In some cases, the schlich fraction of the sand and gravel mixture contains valuable materials and gold. Their concentration, as a rule, is small, but the huge volumes of the transported mass of sands suggest the need to develop the extraction of valuable minerals.

The closest technical solution is a hydraulic trap (I),

Hydraulic traps are cones or pyramids with their vertices facing down. To unload the concentrate from the trap, open the lower pipe and stop the device for a short time. Water is supplied to the trap either from below or from above and from below, a cylindrical or conical mesh is put on the neck of the mill.

The disadvantage of this hydraulic trap is:

1) traps are not intended for large flow rates;

2) the shape of the trap does not allow for additional enrichment of the concentrate in the trap itself,

The purpose of this utility model is the additional extraction of precious metals and valuable heavy minerals from a sand-gravel mixture.

-, and Abe / o HEAVY MINERALS

This goal is solved by the fact that the pipe has a rectangular hole, which is blocked by a 2–4 mm wide hole-type sieve. A bunker is welded to the pipe below the sieve. It has the shape of an inverted beveled pyramid, the bottom wall of which is 2.5-3.5 times lower longer than the wall of the hopper, which rests on the flow of water and sand passing through a shalt sieve. At the bottom of the hopper there is a nozzle with a plug valve to discharge the accumulated bulk concentrate.

Figure I is a general view of the device.

A device for gravitational enrichment of heavy metals consists of a pipe (I), a rectangular hole, in the lower part of the pipe (2), closed with a spall sieve (3), the width of the sieve opening is 2-4 mm. Bunker (4) is welded below the sieve to the pipe, having the shape of an inverted beveled pyramid, the lower wall a (5) of which, located downstream 2.5-3.5 times longer than the wall of the bunker (b), which rests on the current water and sand passing through a shalt sieve (3). At the bottom of the hopper there is a pipe (7) with a plug valve (8) for the discharge of accumulated bulk concentrate.

Concrete example

The flow of sand-gravel mix moves through the pipe (I) according to the law / ce 2: pe-Les u. heavy particles settle on the bottom of the pipe and fall through a shalt sieve (3) into the hopper (4), also settling on the bottom of the hopper. A jet of water under pressure, falling into the hopper (4) and meeting along the wall of the hopper (b) forms virulent flows that cleanse heavy particles a second time by displacing them with water pressure onto a shalt sieve (3), through which they enter, a jet of water under pressure returns to the pipe again, and heavy particles are deposited for collection through a pipe (7) with a plug valve (8)

P /

The economic effect for the season from the introduction of this utility model will be only 50 kg / m3 - 300-400 million rubles from this dredger when the gold content in ASG is only.

Sourse of information:

I. Plaksin I.N. Metallurgy of precious metals, M., Stallurgizdat, 1968, pp. 93-97.

Applicant:

Director of the AmurNNII FEB RAS,

Corr. RANAUU V.G. Moiseenko

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Claims (1)

A device for gravitational enrichment of heavy minerals, having a pipe, a rectangular hole covered with a cobalt sieve, a hopper, characterized in that the hopper has the shape of an inverted beveled pyramid, the lower wall of which is located 2.5 - 3.5 times longer than the hopper wall, into which the flow of water and sand rests, passing through a shaltovy sieve, and a branch pipe with a plug valve for the release of accumulated concentrate.