Gas-solid circular-flowing magnetic-field fluidized sorting device

Abstract

The invention discloses a gas-solid circular-flowing magnetic-field fluidized sorting device. The sorting device comprises an electromagnetic coil, an annular bed body, a feeding hopper supporting plate, a medium feeding hopper, a coal feeding hopper, a floating object discharging device, a sediment discharging hopper, an inclined hole air distribution plate, an air dispersing layer, an air inletpipe, an air distribution air bag, an air supply pipe and an air chamber. The sorting device is characterized in that the feeding hopper supporting plate is fixed above the feeding end of the annularbed body, and the medium feeding hopper and the coal feeding hopper are fixed on the feeding hopper supporting plate; the floating object discharging device is fixed on the annular bed body in a riding mode through a buckling plate, and the discharging height is adjustable; the sediment discharging hopper is fixed at a tail material discharging hole at the bottom of the annular bed body; the inclined hole air distribution plate, an air dispersion layer and the air chamber are stacked and fixed to an air supply port at the bottom of the annular bed body; and the air inlet pipe is connected to the air distribution air bag, and the air supply pipe is used for connecting the air distribution air bag and the air chamber. The annular magnetic field fluidized bed mode is adopted, so that the problem of insufficient sorting and the like of a straight magnetic field fluidized bed is effectively solved, the sorting time is prolonged, and the sorting efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of dry coal preparation, in particular to a gas-solid circulation magnetic field fluidized separation device. Background technique [0002] my country consumes a lot of energy and the distribution of resources is uneven. Most energy minerals, especially coal, are distributed in cold and arid regions such as Northeast, Northwest, and North China. Wet coal preparation consumes a lot of water, is difficult to dehydrate and is prone to freezing in winter, which brings great difficulties to transportation and utilization, and instead becomes a high energy-consuming unit. Therefore, dry coal preparation is very suitable for these areas. [0003] Dry separation of fine coal is particularly difficult. The magnetic field fluidized bed can effectively prevent the generation of large air bubbles in the bed, and can separate fine coal more effectively. In the magnetic field fluidized bed described in patent CN200920...

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Problems solved by technology

[0003] Dry separation of fine coal is particularly difficult

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