抄録
Kinetic behavior of lead removal from liquid copper by slag-metal reaction was investigated at 1200 °C on a laboratory scale. Various slags composed of Cu2O, Fe2O3, B2O3 and SiO2 were used, For Cu2O-MxOy (M = B, Si, Fe) binary slags, B2O3 addition was most effective for the lowering of activity coefficient of PbO in slag. As a result, larger removal rate of lead from liquid copper was obtained under the experimental condition of higher contents of B2O3 and oxygen. SiO2 was also an effective slag component for the lead removal, but the reaction rate was retarded by its addition to slags. The kinetic behavior of lead removal by oxidizing slags could be simulated by the reaction model based on the two film theory.
