Sorting machine of anhydrous high-sulfur high-ash powdered coals

Abstract

The invention discloses a sorting machine of anhydrous high-sulfur high-ash powdered coals, which comprises an anhydrous powdered coal feeding system, an anhydrous powdered coal vortex online launching sulfur-reducing and ash-removing system, an original powdered coal liquid vortex sulfur-reducing and ash-removing system, a powdered coal liquid pressure-regulation vortex sulfur-reducing and ash-removing system, a fine powdered coal liquid gravity multi-end multilayer rotational flow trough system, a low-sulfur low-ash powdered coal conveying electronic scale, a clarified water and powdered coal liquid conveying system, a 238Pu type powdered coal sulfur and ash online detection system, and a pressure filter set and dehydrator set system. The 238Pu type powdered coal sulfur and ash online detection system detects the sulfur content and the ash content in the powdered coals on line, and can automatically adjust the concentration of the powdered coals with the particle size of 1 to 0 millimeter in the whole process to ensure that all the products conveyed by the low-sulfur low-ash powdered coal conveying electronic scale are low-sulfur low-ash powdered coals with low cost and high added value. The sorting machine has a low coal sorting cost, has no chemical agents and heavy media which pollute the low-sulfur low-ash powdered coal products and the environment, and can perform online detection on and automatically adjust and control the sulfur content and the ash content in the powdered coal products.

Description

technical field [0001] The invention belongs to the technical field of coal separation, and in particular relates to an anhydrous high-sulfur and high-ash pulverized coal separation machine. Background technique [0002] At present, the coal mining process of large, medium and small coal mines at home and abroad produces about one-third of the pulverized coal. In some large coal-producing countries, the amount of high-sulfur, high-ash, difficult-to-separate pulverized coal and high-sulphur, high-ash, extremely difficult-to-separate pulverized coal It accounts for about 40% of the total pulverized coal. Because the flotation machine can only wash the easy-to-select fine coal, the coal preparation cost of the dense medium cyclone is too high, and the heavy medium pollutes the clean coal product and the environment, so it is extremely difficult to promote. The gangue powder and inorganic sulfur in the by-products The powder cannot be separated, which does not meet the require...

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Problems solved by technology

Because the flotation machine can only wash the easy-to-select fine coal, the coal preparation cost of the dense medium cyclone is too high, and the heavy medium pollutes the clean coal product and the environment, so it is extremely difficult to promote. The gangue powder and inorganic sulfur in the by-products The powder cannot be separated, which does not meet the requirements of circular economy, which has led to the prohibition of mining high-sulfur and high-ash coal in some coal-producing countries

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