铁水温度、炉渣碱度和初始硅含量对碳饱和铁水脱锰的影响

Influence of Metal Temperature,Slag Basicity and Initial Si Content on Demanganization of Carbon-Saturated Hot Metal

通过1 kg钼丝炉和10 kg感应炉铁水脱锰的实验研究表明,高[Si]_i(≥0.22%)、低炉渣碱度(R≤0.65)、低温有利于铁水脱锰。当铁水温度T=1 280℃、R=0.44、(FeO)=11.36%、(MnO)=6.62%时,锰在渣铁间的分配率L_(Mn)=275.83,脱锰率η_(Mn)=92.94%,终点[Mn]=0.024%,满足了高纯生铁对锰的指标要求。

Test and study on demanganization of hot metal by using 1 kg molybdenum-wound furnace and 10 kg induction furnace show that high [ Si ] （ ≥0. 22 % ）, low slag basicity （ R≤ 0. 65 ） and lower temperature are available to demanganization of hot metal ; as hot metal temperature T = 1 280℃, slag basieity R = 0. 44, （FeO） = 11.36% and （MnO） = 6. 62% , the manganese distribution ratio between slag and metal LMn = 275.83, the demanganization rate ηMn = 92. 94% and end [ Mn] =0. 024% to meet the requirement of Mn content in high-pure pig iron.