METHOD FOR REDUCING COAL HUMIDITY DURING ITS BENEFICATION Russian patent published in 2017 - IPC C10L5/00 F26B17/04 F26B20/00 

FIELD: oil and gas industry.

SUBSTANCE: method for reducing coal humidity during its benefication involves heating the coal mixture, moved by the scraper conveyor by direct contact with the surface of this conveyor, while simultaneously forcing the evaporated moisture out of the heating zone. Only a grade of coal with a particle size from 0.5 to 13 mm is exposed to heating, the surface temperature is controlled in the range from 150 to 250°C, and the speed of moving the working branches of the scraper conveyor is from 0.3 to 1.0 m/s, depending on the percentage of coal of different grades in the initial coal mixture, as well as on the actual humidity parameters of at least two coal grades with a particle size up to 0.5 mm and from 0.5 to 13 mm after their benefication.

EFFECT: method allows to efficiently and safely bring the final moisture content of the coal concentrate to the conditioned without the organization of a separate technological process.

2 cl, 1 dwg