交流阻抗谱在炉渣电导率测定中的应用
来源期刊：中国有色金属学报2000年第3期
论文作者：鲁雄刚 李福燊 李丽芬 周国治
文章页码：437 - 439
关键词：炉渣； 电导率； 阻抗谱
Key words：slags; conductivity; complex impedance
摘 要：利用电化学交流阻抗谱法对CaO-SiO2-Al2O3-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20%(摩尔分数)时， 三价铁离子对电导率的影响较小；CaO-SiO2-Al2O3 - Fe2O3渣系中存在电子导电，电子电导率约为10-3～10-2S·cm-1。
Abstract: The electrochemical AC impedance for measuring the resistance of CaO-SiO2-Al2O3-FeOx 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-SiO2-Al2O3 - Fe2O3 slag system. It can be estimated that electronic conductance is in the range of 10-3S·cm-1 to 10-2 S·cm-1.
