Kinetics of malachite leaching in alkaline glycine solutions

被引：15
|
作者：
Tanda, B. C. [1 ]
Oraby, E. A. [1 ,2 ]
Eksteen, J. J. [1 ]
机构：
[1] Curtin Univ, Western Australian Sch Mines Minerals Energy & Ch, GPO Box U1987, Perth, WA 6845, Australia
[2] Assiut Univ, Fac Engn, Assiut, Egypt
来源：
MINERAL PROCESSING AND EXTRACTIVE METALLURGY-TRANSACTIONS OF THE INSTITUTIONS OF MINING AND METALLURGY | 2021年 / 130卷 / 01期
关键词：
Malachite; alkaline; glycine; kinetics; leaching;
D O I：
10.1080/25726641.2018.1505211
中图分类号：
TD [矿业工程];
学科分类号：
0819 ;
摘要：
Aqueous alkaline glycine solutions present technical advantages over acidic solutions for leaching oxidised copper minerals hosted in carbonate mineral matrix phases. In this study, the leaching and kinetics of malachite in alkaline glycine solutions have been studied. The influence of process variables such as glycine concentration, temperature, particle size and stirring speed on leaching kinetics was evaluated. The results show that temperature has a significant effect on copper dissolution rates. A temperature increase from 25 degrees C to 50 degrees C resulted in a copper extraction of 32.3-83.6% respectively over 5 min. Increasing glycine concentration and reducing particle size led to an increase in copper extraction rates while no significant influence was observed with stirring speeds above 350 rpm.
引用
收藏
页码：16 / 24
页数：9
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