FIELD: coal industry.
SUBSTANCE: invention relates to the field of coal enrichment, in particular to the production of high-quality coal coke and high-caloric heat-treated solid fuel for metallurgy, power industry and other industries. Prior to thermal treatment of coal, extreme cooling of coal is carried out to the temperature of -10 to -12 °C. Then, the coal is heated in the fluidized bed furnace in three stages. At the first stage, heating is carried out to the temperature from 120 up to 130 °C, in the second stage to the temperature from 280 up to 300 °C, in the third stage to the temperature from 500 up to 550°C.
EFFECT: technical result is to increase the yield of the coke residue at the decrease in its ash content.
1 cl, 1 tbl, 5 ex
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