RU2486961C1 - Device for mixing coal with magnetite suspension before feeding into concentration device - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to concentration of minerals. Proposed device comprises vessel with grate for magnetite suspension to be fed thereon with its bottom part connected with pump suction pump. Note here that vessel features contraction at its bottom. Besides, vessel accommodates coal loading vertical tube with its top secured at said grate and bottom arranged between tube and vessel wall to make a clearance there between. Vessel has top cylindrical part, its conical part being connected with smaller-diameter bottom cylindrical part accommodating vertical tube bottom. Note also that vessel bottom is connected with hatch.

EFFECT: uniform mixing before feed into dressing unit.

3 cl, 1 dwg

Description

The invention relates to the field of enrichment of coal and other minerals, provides a uniform mixture of coal and magnetite suspension before feeding into the beneficiation device.

Closest to the proposed device is a device for the enrichment of coal, containing a container for supplying crushed material and water into it, connected by its lower part to the suction pipe of the pump. The filling level of the tank is controlled using a level gauge (RF patent No. 2182045, publ. 10.05.2002).

A disadvantage of the known device is that when coal is enriched using a magnetite suspension, light coal floats and accumulates in the upper part of the device’s capacity when coal and magnetite suspension are fed into the device’s tank from above. The heavier rock sinks and is pumped under the necessary pressure into the concentration device. Light coal accumulates in the upper part of the tank of this device, which violates the ratio of coal and magnetite suspension necessary for normal operation of the device to be fed to the beneficiation device.

The technical result of the invention is the uniform mixing of coal and magnetite suspension before being fed to the beneficiation device.

The technical result is achieved by the fact that the device for mixing coal and magnetite suspension before feeding into the beneficiation device contains a container with a grate for feeding magnetite suspension to it, connected with its lower part to the suction pipe of the pump, while the tank is made narrower in the lower part, and the device is equipped with located in the tank vertical pipe for loading coal, the upper part of which is fixed on the grate, and the lower part is located with the formation of a gap between the pipe and the wall of the tank.

Preferably, the container has an upper cylindrical part connected by a conical part to a lower cylindrical part of a smaller diameter, in which the lower part of the vertical pipe is placed.

Preferably, the lower part of the tank is connected to the hatch.

The invention is illustrated in the drawing (figure 1), where:

1 - upper cylindrical part of the tank;

2 - conical part of the tank;

3 - a vertical pipe;

4 - lattice for feeding magnetite suspension to it;

5 - kerchief;

6 - struts;

7 - the gap between the pipe and the wall of the tank;

8 - suction pipe of the pump;

9 - hatch;

10 - lower cylindrical part of the tank.

A device for mixing coal and magnetite suspension before being fed into the beneficiation device includes a container (Fig. 1) with a grill 4 for supplying magnetite suspension to it, consisting of an upper cylindrical part 1 connected by a conical part 2 with a lower cylindrical part 10 of a smaller diameter. The lower cylindrical part 10 of the tank (Fig. 1) is connected to the suction pipe 8 of the pump (not shown in the drawing), as well as to the hatch 9. The device is equipped with a vertical pipe 3 for loading coal, located in the tank (Fig. 1), the upper part of which is fixed on the grill 4 using a scarf 5, and the lower part is located with the formation of a gap 7 between the pipe 3 and the wall of the tank (figure 1) and is secured by spacers 6.

The device operates as follows.

Coal is fed into the upper bell (Fig. 1) of the vertical pipe 3, and the magnetite suspension is fed to the grate 4, filling the inner space of the upper cylindrical and conical parts 1, 2 of the tank (Fig. 1). Then the pump is turned on (not shown in the drawing), during which a vacuum is generated in the suction pipe 8, and due to the pressure drop, the magnetite suspension is sucked into the pump suction pipe 8 (not shown in the drawing) and passes through the gap 7 at a high speed, which suggests a sufficient mixture of coal and magnetite suspension. As a result, no separation occurs in the container (Fig. 1), and all coal is evenly pumped into the processing unit (not shown).

When a sudden stop is possible clogging of the lower cylindrical part 10 of the tank (figure 1), therefore, a hatch 9 is provided for cleaning the suction pipe 8 of the pump (not shown).

Thus, the proposed device provides uniform mixing of coal and magnetite slurry before being fed to the beneficiation device.

Claims (3)

1. A device for mixing coal and magnetite suspension before feeding into an enrichment device containing a container with a grate for feeding magnetite suspension to it, connected with its lower part to the suction pipe of the pump, while the tank is made narrower in the lower part, and the device is equipped with located in the tank a vertical pipe for loading coal, the upper part of which is fixed to the grate, and the lower part is located with the formation of a gap between the pipe and the wall of the tank. 2. The device according to claim 1, characterized in that the container has an upper cylindrical part connected by a conical part to a lower cylindrical part of a smaller diameter, in which the lower part of the vertical pipe is placed. 3. The device according to claim 1, characterized in that the lower part of the tank is connected to the hatch.