POWDER WIRE FOR OUT-OF-FURNACE TREATMENT OF STEEL MELT

摘要

FIELD: metallurgy.;SUBSTANCE: invention relates to ferrous metallurgy, particularly, to means of out-of-furnace treatment of steel melt by granular calcination agents. Proposed powder wire comprises hollow steel d_np-ID-billet and filler. Said filler comprises mechanical mix of iron and calcium. Calcium represents cast or crushed pellets or chips sized to (0.01-0.4)d_w. Iron represents crushed metalised pellets sized to (0.1-0.7)d_w. Note here that 60-70% of pellets of total amount of iron are sized to (0.5-0.6)d_w.;EFFECT: increased specific amount of filler and higher recovery of calcium.;3 cl, 1 dwg