FIELD: metallurgy.
SUBSTANCE: method involves pulverised coal supply to blast-furnace hearth. Bituminous lump coal is supplied together with supply of pulverised coal to blast-furnace hearth to upper part of blast furnace. Ratio of mass handling of bituminous lump coal and pulverised coal is 1:4÷1:6, at pulverised coal consumption of up to 180-200 kg/t of cast iron.
EFFECT: coke saving.
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