DESULFURIZER FOR CAST IRON SMELT Russian patent published in 1997 - IPC

FIELD: metallurgy. SUBSTANCE: desulfurizer has, weight %: material containing silicon dioxide 5-25, and calcium carbide - the rest. Desulfurizer can additionally contain, weight %: metal oxide taken from the group: iron oxide and manganese oxide and, additionally, calcium fluoride 0.1-5.0. Iron oxide - oxide taken from the group iron oxide and ferrosoferric oxide; manganese oxide is taken from the group of manganese oxide. Desulfurizer is used for cast iron desulfurization and in methods for calcium carbide residual content decrease. EFFECT: enhanced quality of desulfurizer. 4 cl, 4 tbl