Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第18卷    第5期    总第110期    2008年5月

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文章编号:1004-0609(2008)05-0934-05
温度和气氛对CaO-SiO2-Al2O3-MgO-FetO渣系FetO活度的影响
赵丽树1,吕 庆2,张淑会2,黄建明2,李福民2

(1. 东北大学 材料与冶金学院,沈阳 110004;2. 河北理工大学 冶金与能源学院,唐山 063009)

摘 要: 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COCO2Ar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。

 

关键词: CaO-SiO2-Al2O3-MgO-FetO五元渣系;FetO活度;温度;气氛

Effect of temperature and gas ratio on FetO activity of CaO-SiO2-Al2O3-MgO-FetO slags
ZHAO Li-shu1, LÜ Qing2, ZHANG Shu-hui2, HUANG Jian-ming2, LI Fu-min2

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

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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