FIELD: metallurgy.
SUBSTANCE: process comprises mixing of two or more types of coal and charring of this mix. Note here that, first, relationship is derived between interfacial tension of said coal mix and hardness of coke resulted from charring of said mix of coals. Interfacial tension of said coal mix is obtained with the help of surface tension of every coal type and determination of relative content of every coal type. Note here that used relationship between interfacial tension of said coal mix and hardness of coke is derived so that interfacial tension of said coal mix exists in the range whereat hardness of coke is sufficient.
EFFECT: possibility of mixing of various coals and making of metallurgical coke of high hardness.
15 cl, 7 dwg, 13 tbl, 6 ex
