摘要
用交流阻抗法研究了融熔ＣｕＳ／ＣａＯＳｉＯ２Ａｌ２Ｏ３体系界面脱硫反应动力学，得到了该体系的阻抗响应图。通过用Ｒａｎｄｌｅｓ等效电路，并将所得的阻抗用非线性最小二乘法拟合，获得ＣｕＳ／ＣａＯＳｉＯ２Ａｌ２Ｏ３体系界面脱硫反应动力学的参数，如熔渣电阻Ｒｅ，电极反应电荷传递电阻Ｒｃｔ，电极双电层电容Ｃｄｌ及脱硫反应速率常数ｋｆ等。
The interfacial reaction between molten Cu S alloy and CaO SiO 2 Al 2O 3 slag was studied by an AC impedance method to clarify the individual kinetic factors concerning the electrode reaction at the interface between the alloy and the slag. The total impedance between Cu S alloy and CaO SiO 2 Al 2O 3 slag was measured. The results obtained were successfully used to determine the individual kinetic factors on the electrode reaction between the alloy and the slag, such as electrolyte resistance R e, double layer capacitance C d, charge transfer resistance R ct , rate constant of desulfurization reaction k f and so on. When overpotential η equals to -100 mV, these values are as follows: R e=3.98×10 -4 Ωm 2, R ct =7.23×10 -4 Ωm 2, C d=6.79×10 -2 Fm -2 , k f=1.26×10 -3 s -1 .
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
1999年第1期150-154,共5页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金
关键词
交流阻抗法
渣金界面
脱硫反应
动力学
冶金
AC impedance slag metal interface desulfurization reaction kinetics
