Leaching kinetics of wolframite with sulfuric-phosphoric acid

被引：0

作者：

Yang K.-H. ^{[1
]}

Zhang W.-J. ^{[1
]}

He L.-H. ^{[1
]}

Li Y.-L. ^{[1
]}

Guo F.-L. ^{[1
]}

Chen X.-Y. ^{[1
]}

Li J.-T. ^{[1
]}

Liu X.-H. ^{[1
]}

Zhao Z.-W. ^{[1
]}

机构：

[1] School of Metallurgy and Environment, Central South University, Changsha

来源：

Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2018年 / 28卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Avrami equation; Leaching kinetics; Phosphoric acid; Sulfuric acid; Wolframite;

D O I：

10.19476/j.ysxb.1004.0609.2018.01.21

中图分类号：

学科分类号：

摘要：

The leaching kinetics of wolframite with sulfuric-phosphoric acid were studied by single factor method. The effects of process parameters, such as stirring speed, particle size, temperature, as well as the concentrations of sulfuric acid and phosphoric acid were investigated in order to simulate the kinetics of wolframite dissolution. The results show that the leaching process can be described by Avrami model, with the chemical reaction as the controlling step, the model parameter is determined to be 0.83, the apparent activation energy is calculated as 67.54 kJ/mol, and the kinetics equation for wolframite leaching with sulfuric-phosphoric acid is established. © 2018, Science Press. All right reserved.

引用

页码：175 / 182

页数：7

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