Raw coal washing system

Abstract

The invention discloses a raw coal washing system. The raw coal washing system comprises circulating coal crushing equipment, wherein a vibrating drop guide is arranged below a discharging gate of the circulating coal crushing equipment; a belt conveyor is arranged between the vibrating drop guide and a raw material storage tank; the raw material storage tank is communicated with the raw coal inlet of a three-product dense medium cyclone through a screw conveyer; the suspension inlet of the three-product dense medium cyclone is communicated with a medium storage tank through a medium pump; the outlet of the three-product dense medium cyclone is communicated with medium drainage equipment and dehydration equipment; the medium drainage equipment is communicated with the medium storage tank through a medium recovery pump. The raw coal washing system has the advantages that the coal is continuously washed and is not needed to be manually transferred between the equipment, the labor force and transportation equipment cost of coal production enterprises are reduced, and the raw coal treatment time is shortened, so that the coal washing process is easily accepted by the coal production enterprises, the system is suitable for large-scale popularization and application in coal industry, the overall raw coal washing rate in the coal industry is improved, the environmental pollution degree is reduced, the fire coal efficiency is improved, and transport capacity waste is reduced.

Description

technical field [0001] The invention relates to a coal washing equipment, in particular to a raw coal washing system. 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 coal is directly supplied to downstream industries. According t...

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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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