Leaching Kinetics and Seperation of Antimony and Arsenic from Arsenic Alkali Residue

被引：4
|
作者：
Zeng Gui-Sheng [1 ]
Li Hui [1 ]
Chen Su-Hua [1 ]
Tu Xin-Man [1 ]
Wang Wen-Bin [1 ]
机构：
[1] Nanchang Hangkong Univ, Sch Environm & Chem Engn, Nanchang 330063, Peoples R China
来源：
ADVANCES IN METALLURGICAL AND MINING ENGINEERING | 2012年 / 402卷
关键词：
Arsenic alkali residue; Leaching; Kinetics;
D O I：
10.4028/www.scientific.net/AMR.402.57
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The separation of antimony and arsenic and leaching kinetics of arsenic from arsenic alkali residue were investigated. The influencing factors such as solid/liquid ratio, stir speed, temperature and time on leaching of arsenic were studied. The results show that the leaching rate reaches 87.75% at the condition of solid/liquid ratio of 1:4, stir speed of 600r/min ,temperature of 90 degrees C and time of 60min. The leaching process was controlled by the surface chemical reaction and the kinetics of leaching arsenic followed the model of shrinking core. The activation energy was found to be 666.57kJ/mol. The kinetics equation was expressed as 1-(1-x)(1/3) = Mkc/br(0)rho t.
引用
收藏
页码：57 / 60
页数：4
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