FIELD: metallurgy.
SUBSTANCE: product of retarded semi-coking of heavy oil residues with contents of volatile substances fro 12 to 25 % and temperature interval of plasticity not less, than 120° C is used as additive to coal charges at production of metallurgical coke.
EFFECT: additive to coal charges facilitating combined coking of coals with different plastic properties and improving quality of coke.
2 dwg
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