Coarse slime column type sorting device and method

Abstract

The invention relates to a coarse slime column type sorting device. The coarse slime column type sorting device mainly comprises a fluidized bed column (1), a column surrounding feeder (2), a water supply system, a float discharging system, a sediment discharging system and an electrical centralized control system; the column surrounding feeder (2) is located in the middle of the outer side of the fluidized bed column (1); the float discharging system is located on the upper portion of the fluidized bed column (1); the sediment discharging system is located at the bottom of the fluidized bed column (1); the column surrounding feeder (2) is composed of 4-8 groups of feeding guns uniformly arranged in the middle of the outer side of the fluidized bed column (1); and each group of feeding guns conduct feeding along the tangent line of the fluidized bed column (1). The invention simultaneously provides a sorting method of the coarse slime column type sorting device. According to the coarse slime column type sorting device and the sorting method thereof, efficient sorting of coarse slime can be achieved, the probable deviation Ep value is effectively decreased, the sorting precision is improved, the clean coal yield is increased, the clean coal quality index is improved, and the problem that the coarse slime and clean coal carry ash is solved.

Description

technical field [0001] The invention relates to the technical field of coal slime separation, in particular to a coarse coal slime column type separation device and method. Background technique [0002] Coal is one of the most abundant resources in my country. Coal burning brings serious environmental pollution. Coal preparation is the source of clean coal technology and the most effective and cheapest way to realize the clean utilization of coal. During the crushing, screening and sorting process of coal, a large number of coal particles with a particle size ranging from 0.25 to 2 mm are inevitably produced, which is called "coarse coal slime". [0003] At present, the separation technology of lump coal and fine coal slime is relatively mature, but the separation technology of coarse coal slime is not yet mature. Efficient separation of coarse coal slime is a hot and difficult issue in the field of coal preparation. At present, the equipment mainly used in the field of co...

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Problems solved by technology

[0004] In view of the above analysis, the present invention aims to provide a coarse coal slime column sorting device and method to solve the problem that the existing coarse coal slime sorting device has poor sorting stability, poor adaptability, and difficulty in dynamic selection according to demand. Problems tuning the sorting process

[0005] Aiming at the problems of low sorting accuracy, weak reliability and poor adaptability in the current coarse slime sorting device and method, the present invention proposes a column type slime flow that strengthens the sorting stability of coarse slime and improves the sorting effect Chemical bed separation device and method

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