FIELD: coal industry.
SUBSTANCE: coal charge for coke production contains two or more types of coals with different surface tension, relative proportion of each coal is controlled using surface tension of semicoke mix, made of said coal mix, as an indicator. Relative proportion of each coal contained in said coal mix is controlled so, that surface tension of the semicoke mix is in range ±1.5 mN/m from surface tension of semicoke, produced by means of thermal treatment of the rest part of coal charge, excluding said coal mix.
EFFECT: invention can be used for preparation of coal mix for coke production.
16 cl, 1 dwg, 5 tbl, 2 ex
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