A heavy medium continuous coal washing equipment and raw coal continuous crushing method

Abstract

The invention provides a heavy medium continuous coal washing unit and a continuous raw coal crushing method. The heavy medium continuous coal washing unit comprises a cyclic coal crusher; a vibrating guiding device is disposed below the cyclic coal crusher; a belt conveyor is disposed between the vibrating guiding device and a raw material storage tank; the raw material storage tank is communicated with a raw coal entry of a tri-product heavy medium cyclone through a spiral conveyor; a suspension inlet of the tri-product heavy medium cyclone is communicated with a medium storage tank through a medium pump; a washed coal exit, a middling exit and a gangue exit of the tri-product heavy medium cyclone are respectively communicated with a medium removal device and a dewatering device; the medium removal device is communicated with the medium storage tank through a medium recovery pump. The heavy medium continuous coal washing unit and the continuous raw coal crushing method are available for continuous coal washing, labor cost and transport equipment cost for coal washing can be greatly reduced for enterprises, raw coal handling time is shortened, product structure optimization is facilitated for coal manufacturers, market competitiveness is improved, selling profit in products is increased, and washing rate of raw coal is increased for the whole coal industry.

Description

technical field [0001] The invention relates to a coal washing equipment, in particular to a dense medium continuous coal washing equipment and a raw coal continuous crushing method. Background technique [0002] Coal washing is an important process in the deep processing of coal. After the raw coal is washed, the impurity content carried by it is greatly reduced, and the pollutants and ash produced after combustion are greatly reduced, realizing the clean utilization of coal. However, due to the lack of connection between various equipment such as crushers and screening machines used in the current coal washing process, the raw coal needs to be manually transferred to the next process after crushing and screening. The existing coal washing operation is more cumbersome and continuous production cannot be formed, and the coal washing operation needs to consume a lot of labor costs and transportation equipment costs. Considering that the coal washing step is omitted, the raw ...

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Problems solved by technology

When coal-fired enterprises use unwashed raw coal as fuel, the pollutants emitted will increase significantly compared with burning clean coal, and the combustion efficiency is very low. The ash content in raw coal is high, and it is difficult to clean up the residue after combustion. In addition, since most of my country's coal-producing areas are far away from economically developed areas with large coal consumption, the coal transportation volume is large and the transportation distance is long. The average coal transportation distance is about 600 kilometers. a lot of capacity

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