过程工程学报
過程工程學報
과정공정학보
The Chinese Journal of Process Engineering
2004年
2期
124-129
,共6页
王兴尧%彭鹏%谢慧琴%卢立柱
王興堯%彭鵬%謝慧琴%盧立柱
왕흥요%팽붕%사혜금%로립주
sphalerite leaching%sulfur layer%tetrachloroethylene%kinetic model
The effects of tetrachloroethylene (C2C14) on sphalerite leaching in FeCl3-HCl wereinvestigated in view of simultaneous mass transfer and reaction, and the leaching models with andwithout organic solvent C2Cl4 were derived. The leaching experiments and the SEM results show thatC2C14 is an effective organic solvent for sphalerite leaching in FeC13-HC1 system to be accelerated andfor the sulfur to be separated. Adding C2C14 in the FeCl3-HC1 medium will turn the kinetic modelcontrolled by sulfur layer diffusion with process activation energy of 67.9 kJ/mol into mixed diffusionwith the energy reduced to 55.1 kJ/mol when 20 ml of C2C14 was added.
