摘要
利用电化学交流阻抗谱法对CaO SiO2 Al2 O3 FeOx 渣系的电导进行了研究。结果表明 ,随着渣相中氧化亚铁浓度的增大 ,温度系数逐渐减小 ;三价铁离子对电导率的影响随渣相中铁氧化物浓度的增大而显著 ,但当铁氧化物浓度小于 2 0 % (摩尔分数 )时 ,三价铁离子对电导率的影响较小 ;CaO SiO2 Al2 O3 Fe2 O3 渣系中存在电子导电 ,电子电导率约为 10 -3 ～ 10 -2 S·cm-1。
The electrochemical AC impedance for measuring the resistance of CaO SiO 2 Al 2O 3 FeO x slag system was worked out. The experimental results suggest that the temperature coefficient decreases as the content of iron oxide in slag increases. The effect of ferric ion on electrical conductivity is more pronounced at high iron oxide concentrations, but when the mole fraction of iron oxide is below 20%, the effect of ferric ions can be neglected. The experimental data show also that electronic conductance exists in CaO SiO 2 Al 2O 3 Fe 2O 3 slag system. It can be estimated that electronic conductance is in the range of 10 -3 S·cm -1 to 10 -2 S·cm -1 . [
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2000年第3期437-439,共3页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金!( 5 98740 0 4)
关键词
炉渣
电导率
阻抗谱
测定
slags
conductivity
complex impedance
