摘要
The effects of tetrachloroethylene (C2Cl4) on sphalerite leaching in FeCl3HCl were investigated in view of simultaneous mass transfer and reaction, and the leaching models with and without organic solvent C2Cl4 were derived. The leaching experiments and the SEM results show that C2Cl4 is an effective organic solvent for sphalerite leaching in FeCl3HCl system to be accelerated and for the sulfur to be separated. Adding C2Cl4 in the FeCl3HCl medium will turn the kinetic model controlled by sulfur layer diffusion with process activation energy of 67.9 kJ/mol into mixed diffusion with the energy reduced to 55.1 kJ/mol when 20 ml of C2Cl4 was added.
The effects of tetrachloroethylene (C2Cl4) on sphalerite leaching in FeCl3HCl were investigated in view of simultaneous mass transfer and reaction, and the leaching models with and without organic solvent C2Cl4 were derived. The leaching experiments and the SEM results show that C2Cl4 is an effective organic solvent for sphalerite leaching in FeCl3HCl system to be accelerated and for the sulfur to be separated. Adding C2Cl4 in the FeCl3HCl medium will turn the kinetic model controlled by sulfur layer diffusion with process activation energy of 67.9 kJ/mol into mixed diffusion with the energy reduced to 55.1 kJ/mol when 20 ml of C2Cl4 was added.
出处
《过程工程学报》
EI
CAS
CSCD
北大核心
2004年第2期124-129,共6页
The Chinese Journal of Process Engineering
基金
Supported by the National Science Foundation of China (No. 20276074)
关键词
四氯乙烯
闪锌矿
浸出
运动模型
氯化铁
SEM
sphalerite leaching
sulfur layer
tetrachloroethylene
kinetic model
