(河北理工大学 冶金与能源学院，唐山 063009)
摘 要: 采用气−渣−金平衡法测定CaO-SiO2-Al2O3-MgO-FetO渣系的磷容量，用钼坩埚作为反应容器，Ag-0.2%P合金作为气−渣−金平衡的熔剂，CO-CO2-Ar混合气体提供体系的氧分压，分析了温度和气氛对该渣系磷容量的影响。结果表明，对于一定成分的炉渣，当体系CO、CO2、Ar组成一定时，随着温度由1 723 K增加到1 823 K，CaO-SiO2-Al2O3-MgO-FetO渣系的磷容量降低；在1 773 K，气氛中氧分压由3.6×10−5 Pa增大到7.2×10−4 Pa时，磷容量随着氧分压的增大而增大。
关键字: CaO-SiO2-Al2O3-MgO-FetO渣系；磷容量；气−渣−金平衡法
（College of Metallurgy and Energy, Hebei Polytechnic University, Tangshan 063009, China）
Abstract:Abstract: The phosphorus capacity of CaO-SiO2-Al2O3-MgO-FetO slags was measured by equilibrating the slags in a molybdenum crucible with CO-CO2-Ar gas and Ag-0.2%P alloy. The effects of temperature and gas pressure on phosphorus capacity were analyzed. The results show that for the slag with constant compositions, under the condition of fixed CO, CO2 and Ar constitution, the phosphorus capacity decreases with increasing temperature from 1 723 K to 1 823 K; the phosphorus capacity rises with the increase of oxygen pressure from 3.6×10−5 Pa to 7.2×10−4 Pa at 1 773 K.
Key words: CaO-SiO2-Al2O3-MgO-FetO slag; phosphorus capacity; gas-slag-metal equilibrium method
