SU1039562A1 - Apparatus for pneumatic jigging of minerals - Google Patents

Abstract

DEVICE FOR PNEUMATIC LEAKAGE CLEANING, including loading and unloading devices, working chamber / pulsator, perforated jigging sieve and restrictive pe. an outline about the similarities. That, in order to improve the performance of the device by increasing the turbulence of the material in the working chamber, the jigging sieve and the limiting grating are divided into sectors, the holes in the jigging sieve are inclined to the axis of the device, and the slope of the holes in adjacent sectors is opposite. and part of the sectors of the restrictive J lattice is made without holes. (L oo; o sd to

Description

The invention relates to the beneficiation of minerals, namely, the deposition of minerals.

A device for depositing minerals is known, comprising a working chamber, a pulsator, a Jitter C I

A disadvantage of the known device is its performance.

The closest to the invention in technical essence and the achieved result is a device for pneumatic depositing of minerals, including loading and unloading devices, a working chamber, a pulsator, perforated jigging sieves and a restricting grid G2.

A disadvantage of this device is low productivity due to the lack of efficiency of the jigging process due to the impossibility of quickly and completely separating mineral particles from waste rock with an orderly parallel movement of the entire mass of particles during air supply. The purpose of the invention is to increase the productivity of the device by increasing the turbulence of the movement of the material in the working chamber.

This goal is achieved in those in the device for pneumatic depositing of minerals, including: loading and unloading equipment, a working chamber, a pulsator, perforated depositor

the sieve and the limiting grid, the jigging sieve and the limiting grid are divided into sectors, the holes in the jigging sieve are inclined to the axis of the device, the slope of the holes in the adjacent sectors is opposite, and some of the sectors of the limiting grid are without holes.

Figure 1 schematically presents the proposed device, a longitudinal section; on. FIG. 2 - the same, top view.

The device for pneumatic depositing of minerals includes a body 1, a jigging sieve 2, a limiting grid 3, a pulsator 4, a working chamber 5.

The jigging sieve and the limiting lattice are divided into a number of sectors b and a part of the sectors of the limiting lattice is made without holes

Device for pneumatic deposition of minerals works as follows.

INITIAL material is fed into the working chamber 5 and the pulsator is turned on. Under the action of a periodically supplied nostril flow, the material loosens up to occupy the entire volume of chamber 5. When the air is turned off, the particles are deposited on the jigging sieve 2. The higher the particle density and its dimensions, the faster it drops on the sieve. As a result, for some period of time, the material is stratified by size and density.

In the case of making the jigging screen holes parallel and perforating the restrictive grid evenly over the entire surface when air is supplied, all the material rises. A movement of a portion of the material in the form of conglomerates is observed.

The normal classification of particles in conglomerates is difficult because the concentrated conglomerates move as one unit. The formation of conglomerates is a purely statistical phenomenon, therefore jigging occurs in any apparatus, but the time for jigging — each portion is large. To reduce the time required for the deposit, i.e. increasing the productivity of the apparatus it is necessary to ensure the destruction of conglomerates during their movement in the working chamber: re. This is achieved if the paths of movement of the conglomerates of the particles. At different angles are achieved by making the perforation holes of the jigging sieve inclined to the device axis, looking in neighboring sectors, the direction of inclination of the holes is opposite, and also due to the fact that some of the sectors of the limiting lattice are made without perforation holes.

When the holes are inclined to the axis of the device, the conglomerates of particles move not only vertically, but also in the azimuthal direction and along the radius. Since in the neighboring sectors, the angles of inclination of the opposite direction are directed by the conglomerates, they collide and fall into separate particles. In addition, the additional motion in the azimuthal direction of the particles is obtained due to the distortion of the motion of the flow due to the performance of the sectors of the confined lattice without holes. A decrease in the restrictive lattice bore leads to an increase in the air velocity in the mineral layer, and the intensity of the interaction of particles during a collision is proportional to the cube of the gas velocity.

The use of a device for pneumatic depositing of minerals allows an increase in production} | The efficiency of the processing line is up to 20%.

Claims (1)

DEVICE FOR PNEUMATIC DEPOSITION OF USEFUL FOSSILS, including loading and unloading devices, a working chamber, a pulsator, a perforated depositing sieve and restrictive grating, which is necessary in order to increase the productivity of the device by increasing the turbulence of material movement in the working chamber, the jig sieve and the restriction grid are divided into sectors, the holes in the jig sieve are made inclined to the axis of the device, and the inclination of the holes in the adjacent sectors is opposite, and some sectors of the restrictive I lattice are made without holes. SU, 1039562