ELECTRIC-OXIDATION KINETICS OF MOLYBDENITE CONCENTRATE IN ACIDIC NACL SOLUTION

被引：8

作者：

Cao Zhan-fang ^{[1
]}

Zhong Hong ^{[1
]}

Liu Guang-yi ^{[1
]}

Fu Jian-gang ^{[1
]}

Wang Shuai ^{[1
]}

Qiu Yun-ren ^{[1
]}

机构：

[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China

来源：

CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 2009年 / 87卷 / 06期

基金：

美国国家科学基金会;

关键词：

wet leaching; molybdenite; electric-oxidation; kinetics; electrolyse; dissolution;

D O I：

10.1002/cjce.20237

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The electric-oxidation kinetics of molybdenite concentrate in NaCl electrolyte was investigated in this study. The effects of liquid-to-solid ratio, stirring speed, and concentration of NaCl on the dissolution rate were determined. It was found that the dissolution rate increases with increase in liquid-to-solid ratio, stirring speed, and concentration of NaCl. A shrinking particle model is presented to describe the dissolution and to analyse the data. The apparent activation energy of this dissolution process was found to be 8.2 kJ/mol; it was established that the leaching process is mainly controlled by diffusion, and the kinetics formula of this research system can be expressed as: k = 0.0207(NaCl)(1.04)exp(-8200/RT).

引用

页码：939 / 944

页数：6

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