SU50997A1 - Device for washing the gold-bearing sands - Google Patents

Description

The equipment for washing gold-bearing sands existing at many mines of the USSR is characterized by low productivity, requires large amounts of water and passes considerable amounts of unwashed gold into dump sand.

In the proposed device for washing gold sands, the following advantages are achieved:

1) better production and more complete extraction of gold due to the special arrangement of the gold trap cone;

2) the apparatus is mounted on wheels, which makes it convenient to transfer it from one pit to another;

3) the apparatus requires less water consumption and has with it a supply of water, sufficient for the performance of the opera.

In the proposed apparatus for washing gold-bearing sands, a rotating conical vessel is used, operating on the principle of using centrifugal force with slots along the side surface, in which rotating rollers, covered with fleece, are installed. Rollers serve to remove heavy particles and transfer them to the outer vessel. In the latter, to separate gold from grains of other metals, in particular from heavy iron grains, there is a mercury bath located at the bottom of the vessel, extracting gold. The grains of iron and other grains penetrating into the vessel are carried by a stream of water to the sump.

In FIG. 1 shows a general view of the device and FIG. 2- gold catching cone in a larger scale.

FIG. 1 there are the following designations: 5-charging scoop, 4-feeding elevator, 2-drum screen, 5 - chopper for removal of large pieces (halis) in the dump, / -a basin with water in which screen is immersed 2, 2a - drive, 7-regulator acting on the valve 7a, regulating the flow of sand into the cone, b-gold-drawing cone, 5-roar, 9-settling tank with filter, / 6-pump for water supply, / J-fleecy rollers, fixed in the slots of the cones , M-vessel., Covering the cones.

FIG. 2 denoted by the numbers / - output sleeve, 2-rolls with a nap, 3-ring driving

rollers during the movement of the cone, - an external vessel, a surrounding cone, a 5-stationary water guide ring, 6 - a mercury bath, 7 - a drain for water with sand, § - a drain of pulp from a vessel 4.

The operation of the device is as follows. The gold-bearing sand enters the feed hopper, from where elevator 4 is transferred to screen 2. Sand sieved through screen crashes to the bottom of the basin.

Large pieces of spiral rails placed inside the screen are advanced to the chute 3 and the latter are thrown to the dump. Sand through an adjustable valve 7a, placed at the bottom of the pool, enters the rotating cone 6.

In the cone, sand and water under the action of centrifugal force rise upward and along the ba passage are thrown on an eccentrically moving sieve 8, from where the water goes down to the sump, and the sand enters the dump.

Gold and other heavy grains, T1 peredvig ′ along the walls of the cone spirally upward, are captured by the fleecy surface of the rotating wafers and transferred to the vessel 4, where they are washed off by jets of water and fall into the mercury bath.

In the bath, gold is removed by mercury, and impurities of other particles from the surface of the bath are carried away with water to the sump.

The subject matter of the invention.

Claims (2)

1. A device for washing gold-bearing sands using a rotating conical vessel, operating on the principle of using centrifugal force, characterized in that in the cuts on the lateral surface of the conical vessel b (Fig. 1) rotating conical rollers / j covered with a fleece fabric and serving to trap heavy particles — and transfer them from cone b to vessel M. 2. In the device according to claim 1, use a vessel / 4 with mercury covering a cone 6 in the lower part, with f4 water jets entering the vessel for additional purification of gold. 8. In the device in PP. 1 and 2, the use of a drum screen 2, immersed in a pool / with water and provided on its inner surface with helically arranged laths, which serve to promote coarse material to the place of unloading 3.