Reaction kinetics of malachite in ammonium carbamate solution

被引：11

作者：

Mao, Ying-Bo ^{[1
]}

Deng, Jiu-Shuai ^{[1
]}

Wen, Shu-Ming ^{[1
]}

Fang, Jian-Jun ^{[1
]}

机构：

[1] Kunming Univ Sci & Technol, Fac Land Resource Engn, State Key Lab Complex Nonferrous Met Resources Cl, Kunming 650093, Peoples R China

来源：

CHEMICAL PAPERS | 2015年 / 69卷 / 09期

基金：

中国国家自然科学基金;

关键词：

dissolution; kinetics; malachite; ammonium carbamate; DISSOLUTION KINETICS; LEACHING KINETICS; COPPER-OXIDE; ORE; ACID; SPHALERITE; WATER;

D O I：

10.1515/chempap-2015-0128

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The dissolution of malachite particles in ammonium carbamate (AC) solutions was investigated in a batch reactor, using the parameters of temperature, AC concentration, particle size, and stirring speed. The shrinking core model was evaluated for the dissolution rate increased by decreasing particle size and increasing the temperature and AC concentration. No important effect was observed for variations in stirring speed. Dissolution curves were evaluated in order to test shrinking core models for fluid-solid systems. The dissolution rate was determined as being controlled by surface chemical reaction. The activation energy of the leaching process was determined as 46.04 kJ mol(-1). (C) 2015 Institute of Chemistry, Slovak Academy of Sciences

引用

页码：1187 / 1192

页数：6

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