采用 Mo|Mo+MoO2|ZrO2(MgO)|Fe+(FetO)+Ag|Fe固体电解质电池测定不同温度和气氛条件下定组成 CaO-SiO2-Al2O3-MgO-FetO五元渣系的FetO活度.结果表明,当Ar作为保护气氛时,温度由1 673 K升高到1 785 K,炉渣的FetO活度变化不明显.当气氛中CO,CO2和Ar组成固定时,炉渣的FetO活度随温度的升高而增大.温度为1 673 K时,炉渣的FetO活度随着气氛中CO2/CO的增加而增大.温度和气氛对渣系FetO活度的影响均通过体系的O2分压实现.
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