(1. 東北大學(xué) 材料與冶金學(xué)院，沈陽 110004；2. 河北理工大學(xué) 冶金與能源學(xué)院，唐山 063009)
摘 要: 采用Mo|Mo+MoO2|ZrO2(MgO)|Fe+(FetO)+Ag|Fe固體電解質(zhì)電池測定不同溫度和氣氛條件下定組成CaO- SiO2-Al2O3-MgO-FetO五元渣系的FetO活度。結(jié)果表明，當(dāng)Ar作為保護氣氛時，溫度由1 673 K升高到1 785 K，爐渣的FetO活度變化不明顯。當(dāng)氣氛中CO，CO2和Ar組成固定時，爐渣的FetO活度隨溫度的升高而增大。溫度為1 673 K時，爐渣的FetO活度隨著氣氛中CO2/CO的增加而增大。溫度和氣氛對渣系FetO活度的影響均通過體系的O2分壓實現(xiàn)。
關(guān)鍵字: CaO-SiO2-Al2O3-MgO-FetO五元渣系；FetO活度；溫度；氣氛
（1. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China;2. College of Metallurgy and Energy, Hebei Polytechnic University, Tangshan 063009, China）
Abstract:The FetO activities of CaO-SiO2-Al2O3-MgO-FetO slags of fixed component was determined by the solid electrolyte cell: Mo|Mo+MoO2|ZrO2(MgO)|Fe+(FetO)+Ag|Fe under different temperatures and gas ratios. The results reveal that, only Ar as the protective gas, the effect of temperature on the FetO activity is not distinct while temperature increases from 1 673 K to 1 785 K. The FetO activity rises as temperature increases while the ratio of CO, CO2, and Ar of mixed gas is constant. While temperature is 1 673 K, the FetO activity rises as the ratio of CO2/CO of mixed gas increases. The influence of temperature and gas ratio on the FetO activity is both carried out by the partial pressure of O2 actually.
Key words: CaO-SiO2-Al2O3-MgO-FetO slags; FetO activity; temperature; gas ratio
