Study on Sulphide Capacity of BF Slag Containing Alkali Metals
XIE Haishen1,LI Fumin1,2,MA Mingxin2，L Qing2
1. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China； 2. College of Metallurgy and Energy, Hebei Polytechnic University, Tangshan 063009, Hebei, China
Abstract：The sulphide capacity of B.F. slag containing alkali metals at 1500 ℃ was studied using gasslag equilibrium technique. The results reveal that, at fixed w(MgO), w(Al2O3) and w(K2O+Na2O), sulphide capacity increases with increasing of w(CaO)/w(SiO2) from 0.86 to 1.26; while w(MgO) increases from 5% to 18%, the sulphide capacity increases firstly, and decreases afterwards, it reaches its maximum when w(MgO) is about 8%; while w(Al2O3) increases from 12% to 18% at fixed w(CaO)/w(SiO2),and w(MgO), w(K2O+Na2O), the sulphide capacity increases first and decreases afterwards,reaches its maximum when Al2O3 content is about 13%; at constant w(Al2O3 )and w(MgO), when w(CaO)/w(SiO2) is 0.86,0.96,1.06 and 1.16, the sulphide capacity increases lightly with increasing of w(K2O+Na2O).
2007, Vol. 42 
