SU80831A1 - Method and device for separating minerals by size and specific gravity - Google Patents

Description

The peculiarity of the described method is that the separation of minerals (for example, coal and rock) is carried out by successively clamping pieces of the processed material between rotating surfaces and detaching pieces from them under the action of centrifugal force, communicating with the piece of velocity values and directions corresponding to their size and specific weight.

FIG. 1 schematically shows a device for carrying out the described method, side view; in fig. 2 - the same in terms of.

On the horizontal shaft 1 there are reinforced several conical disks 2, the landing of which allows the inclination of each disk relative to the shaft to an insignificant angle. One side of each disc is made flat, and the opposite - conical. The disks are located on the shaft with a gap relative to each other, and the gaps formed by their flat sides alternate with the gaps 4 formed by conical sides.

When the discs rotate in the direction indicated in the drawing by the arrow, their flat sides diverge by a distance adjusted by the rollers 5, and the gaps formed by the conical sides narrow. The constriction reaches a maximum at a certain distance from the rollers, after which the gap begins to increase.

 For loading the material to be processed, there is a bunker-shaped tray 6, the bottom of which is made in the form of a grate screen intended for screening fines before enrichment. Receivers 7 and S are used to collect enrichment products.

Pieces of the source material (for example, coal and rock) from the bumper-shaped tray enter the gap 4 and, due to its narrowing as the discs rotate and approaching the rollers, are clamped between the discs, distributed in the gap in accordance with their dimensions. The pressure of the lateral sides of the disks, which clamp the pieces of coal and rock, reaching a maximum, begins to decrease in accordance with the increase in gap 4. As a result, pieces of material squeezed between the disks releasing No. 8031-1-2

under the action of centrifugal force, they are transferred to a free flight state along trajectories, the shapes of which depend on the mass and specific weight of pieces of material detached from the disks. The specific weight of hydrogen is higher than the specific weight of coal; therefore, pieces of rock are released from the gap earlier than equal in size and located at equal distances from the center of the vrash; Due to the deviation of the flight paths of the pieces of coal from the flight paths of the pieces of rock, coal and rock are unloaded respectively into receivers 7 and S.

Subject invention

Claims (2)

1. A method of separating minerals of size and specific gravity under the action of centrifugal force, characterized in that the separation is carried out by successive clamping of pieces of the material being processed between rotating surfaces and detachment of pieces from them under the action of centrifugal force with message speeds and directions corresponding to their size and specific gravity. 2. An assembly for carrying out the method according to claim 1, characterized by the presence of conical disks mounted on a horizontal shaft with the possibility of rotating each disk at a certain angle relative to the vertical, and rollers with which pieces of the material being processed from the tray to the disks are first clamped between the disks and moved together with them in the direction indicated by the arrow, and then with an increase in the gap between the discs and under the arching action of the rollers, they are released and go into the free flight state along trajectories depending on spines of their mass and specific gravity and (fall into the corresponding tray. Phage. 2