The experimental research on refining slag systems for ultra-low sulphur steel was carried out in a 10 kg induction furnace.It was proved that sulphur element in molten steel can be removed to less than 5×10^(-6)...The experimental research on refining slag systems for ultra-low sulphur steel was carried out in a 10 kg induction furnace.It was proved that sulphur element in molten steel can be removed to less than 5×10^(-6) by adding CaO-Al_2O_3-SiO_2-MgO-CaF_2 slag on the surface of molten steel and feeding CaO-BaO-CaF2 wire into molten steel.And L_s,which is the coefficient of sulphur between slag and molten steel,that is ω(s)/ω[s],increases by increasing I(I = ωBaO/ωCaO).When I=5/3,L_s can be up to its maximum of 633.The CaSi is effective for deep desulphurization,especially when it is added to the slag of wire feeding.展开更多
Sulphur has been reduced from 0.02wt% to 0.002wt% in 38 min average during 200 t ladle treatment in 2^# steel plant of Capital Steel. The sulphide capacity and equilibrium sulphur distribution of slags are calculated ...Sulphur has been reduced from 0.02wt% to 0.002wt% in 38 min average during 200 t ladle treatment in 2^# steel plant of Capital Steel. The sulphide capacity and equilibrium sulphur distribution of slags are calculated and compared with the measured values. The results show that the KTH model is a useful tool for the prediction of sulphide capacity and sulphur distribution during ladle treatment; the desulphurization reactions are completed nearly in thermo-equilibrium.展开更多
通过在高温钼丝炉上测定硫在钢液与 Ba O- Ca O- Mg O- Al2 O3- Si O2 渣系之间的平衡分配 ,结果表明 :在常用脱硫精炼渣系 Ca O- Mg O- Al2 O3- Si O2 中加入 Ba O能显著提高渣的硫容量。并进一步在感应炉上进行了钢液深脱硫精炼工艺...通过在高温钼丝炉上测定硫在钢液与 Ba O- Ca O- Mg O- Al2 O3- Si O2 渣系之间的平衡分配 ,结果表明 :在常用脱硫精炼渣系 Ca O- Mg O- Al2 O3- Si O2 中加入 Ba O能显著提高渣的硫容量。并进一步在感应炉上进行了钢液深脱硫精炼工艺的实验 ,得出 :含 Ba O脱硫粉剂比传统的 Ca O- Ca F2展开更多
基金Item Sponsored by National Key Fundamental Research Development Project of China(G1998061500)
文摘The experimental research on refining slag systems for ultra-low sulphur steel was carried out in a 10 kg induction furnace.It was proved that sulphur element in molten steel can be removed to less than 5×10^(-6) by adding CaO-Al_2O_3-SiO_2-MgO-CaF_2 slag on the surface of molten steel and feeding CaO-BaO-CaF2 wire into molten steel.And L_s,which is the coefficient of sulphur between slag and molten steel,that is ω(s)/ω[s],increases by increasing I(I = ωBaO/ωCaO).When I=5/3,L_s can be up to its maximum of 633.The CaSi is effective for deep desulphurization,especially when it is added to the slag of wire feeding.
文摘Sulphur has been reduced from 0.02wt% to 0.002wt% in 38 min average during 200 t ladle treatment in 2^# steel plant of Capital Steel. The sulphide capacity and equilibrium sulphur distribution of slags are calculated and compared with the measured values. The results show that the KTH model is a useful tool for the prediction of sulphide capacity and sulphur distribution during ladle treatment; the desulphurization reactions are completed nearly in thermo-equilibrium.
文摘通过在高温钼丝炉上测定硫在钢液与 Ba O- Ca O- Mg O- Al2 O3- Si O2 渣系之间的平衡分配 ,结果表明 :在常用脱硫精炼渣系 Ca O- Mg O- Al2 O3- Si O2 中加入 Ba O能显著提高渣的硫容量。并进一步在感应炉上进行了钢液深脱硫精炼工艺的实验 ,得出 :含 Ba O脱硫粉剂比传统的 Ca O- Ca F2