Dissolution Kinetics of Cerussite in Acidic Sodium Chloride Solutions

Bulletin of the Korean Chemical Society

Wenjuan Zhao¹  Shuming Wen²  Qicheng Feng²  Yijie Wang²  Jian Liu² 

[1] Kunming Metallurgical Research Institute Kunming 650031 China;State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and Technology Kunming 650093 China

关键词: Cerussite;    Sodium chloride;    Hydrochloric acid;    Dissolution;    Kinetics;   

DOI  :  10.1002/bkcs.10203

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The dissolution kinetics of cerussite in acidic sodium chloride solutions was investigated with respect to experimental variables such as particle size, stirring speed, sodium chloride concentration, hydrochloric acid concentration, and reaction temperature. Results show that leaching reagent concentration and reaction temperature have significant effects on the extraction of lead, whereas particle size and stirring speed have a relatively moderate effect on the leaching rate. The dissolution process followed the kinetic law of the shrinking core model, and a corresponding mixed control model was found suitable to represent the rate‐controlling step. The apparent activation energy of this process was determined to be 40.46 kJ/mol, and a corresponding dissolution kinetic equation is also presented to describe the dissolution reaction.

【 授权许可】

Unknown