FIELD: coal processing and chemical technology of solid fuels.
SUBSTANCE: invention can be used in concentrating plants and in coke production, in particular, it concerns a method of preparing coal charge for producing blast-furnace coke. The method includes the following stages: first, a coal concentrate with a fraction of 1.0–120 mm is extracted from a coal concentrate with a fraction of not more than 120.0 mm. After that, the coal concentrate of the separated fraction of 1.0–120.0 mm is crushed to a final fraction of less than 3.0 mm, which is subsequently used for coking, while in the final coal concentrate with a fraction of less than 3.0 mm, the content of the fraction fraction is less than 1.0 mm in an amount not exceeding 25.0%.
EFFECT: development of a technology for preparing coal charge for coking, which makes it possible to exclude regrinding of coal and, as a result, increase the strength characteristics of coke, such as cold and hot strength.
1 cl, 1 dwg, 2 tbl
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