RU2299097C2 - Apparatus of the gravitational enrichment of the minerals - Google Patents

Abstract

FIELD: mining industry; devices for the gravitational enrichment of minerals.

SUBSTANCE: the invention is pertaining to the field of mining industry, in particular, to the gravitational methods of enrichment and may be used for enrichment of the materials containing the noble metals. The apparatus for the gravitational enrichment in the fine layer of the water contains the chute made in the form of the descending spiral with the V-shaped bottom, the system of feeding of the aerated water, the tanks for collection of the concentrate and tailings located in the end of the chute. At that the apparatus has the body made in the form of the pyramid with the steps formed by the chute in the form of the descending spiral with the V-shaped bottom. The system of the aerated water feeding is made in the form of the flexible perforated pipe laid as the spiral at the vertical walls of the steps. The technical result of the invention is the increased efficiency of the minerals separation.

EFFECT: the invention ensures the increased efficiency of the minerals separation.

2 dwg

Description

The invention relates to gravity enrichment methods and can be used to enrich materials containing noble metals.

Known apparatuses for gravitational enrichment in a thin layer of water flowing along an inclined plane, such as round tables [1], and in particular the Fram table [2]. The Fram round table is a large, rotatable convex table with radial arches and an irrigated water supply system, with the supply of the source material to the center of the table.

The disadvantage of this enrichment method is an irrigation system in which heavy particles can be washed off under a moving stream of water; To obtain good enrichment results, a large diameter of the table and, accordingly, the area of the table are required.

Known apparatus gravitational enrichment in a thin layer of water, containing a spiral inclined tray with a V-shaped bottom, a system for supplying loosening water, containers for collecting concentrate and tailings, located at the end of the tray [3].

The disadvantage of this apparatus is the inefficiency of its operation, associated with insufficient loosening of the bed, the possible mixing of heavy and light fractions as the material being moved along the tray and the inability to simulate a large-capacity apparatus.

These disadvantages are eliminated in the proposed apparatus of gravity concentration in a thin layer of water containing a tray in the form of a downward spiral with a V-shaped bottom, a system for supplying loosening water, a container for collecting concentrate and tails at the end of the tray, characterized in that it is equipped with a housing made in in the form of a pyramid with steps formed by a tray in the form of a descending spiral with a V-shaped bottom, while the system of supplying loosening water is made in the form of a flexible perforated tube, laid in a spiral at the vertical walls steps.

Unlike the Fram round table, the new proposed design of the separator eliminates the accidental flushing of a mixture of mineral grains from the working surface under a stream of water, and the loosening and separation of the hydraulic mixture by density occurs continuously along the entire length of the tray in the form of a downward spiral with a V-shaped bottom forming steps pyramids, which contributes to the efficiency of the separator. Thus, the present invention meets the criterion of "novelty."

In contrast to the prototype, in the proposed apparatus it is proposed to carry out the separation of the mineral mixture on the surface of the downward spiral with a V-shaped bottom, where the supply system of loosening water is made in the form of a flexible perforated tube, laid in a spiral at the vertical walls of the steps of the apparatus body. This arrangement of the loosening water system allows to improve the loosening of the bed along the entire length of the tray, and the one-way water supply from the side of the vertical walls allows you to expand the formed fan of the separated minerals with the possible flushing of light fractions along the edge of the tray (step) down to the next step, which significantly unloads the separation zone and ultimately improves the separation of minerals. At the same time, due to the pyramidal shape and the ability to quickly remove light fractions, the apparatus is able to process large volumes of samples.

Thus, the present invention meets the criterion of "inventive step".

Figure 1 shows a General view of the separator.

The separator consists of a casing made in the form of a pyramid with steps (1) formed by a V-shaped tray in the form of a downward spiral (2), a loading cone (3), a flexible perforated tube (4) laid along the vertical wall of the stage, and collection containers tails (6) and concentrate (7) located at the end of the tray.

Figure 2 shows a top view of the separator.

The separator works as follows.

The source material is fed to the loading cone (3). The source material is fed to the upper part of the separator, water is supplied to a flexible perforated tube (4). The slurry begins to move down the tray. Moreover, from the bulk of the source material under the action of centrifugal forces and jets of loosened water, the separation of mineral particles by density occurs.

Moreover, light particles move along a trajectory close to the edge of the tray, and some of them are washed off immediately to the next lower stage. At the end of the tray, the tails are cut off and sent to a tailing container. The concentrate mainly moves along the bottom of the V-shaped bottom (2) and is always washed off and “cleaned” of light particles by water supplied from the holes of a flexible perforated tube (4), laid in a spiral at the vertical wall of the descending steps. At the end of the tray, the concentrate is cut off into a container for collecting the concentrate.

After a certain time of operation of the separator, the process can be stopped, some time is given for washing off light particles. As a result, a heavy concentrate remains at the bottom of the tray. Then, the accumulated concentrate is washed into a container for collecting the concentrate by supplying excess water through a loosening water system.

Literature

1. Fomenko T.G. Gravity enrichment methods. M .: Subsoil. 1966 pp. 238-239.

2. Burt P.O. Gravitational enrichment technology: M .: Nedra, 1990, p. 313.

3 Gravity enrichment apparatus. RU 21690947 C2. 06/20/2001. B03B 5/25.

Claims (1)

An apparatus for gravitational enrichment in a thin layer of water, containing a tray in the form of a downward spiral with a V-shaped bottom, a system for supplying loosening water, containers for collecting concentrate and tails at the end of the tray, characterized in that it is equipped with a casing made in the form of a pyramid with steps, formed by a tray in the form of a downward spiral with a V-shaped bottom, while the system of supplying loosening water is made in the form of a flexible perforated tube, laid in a spiral at the vertical walls of the steps.

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