Research on Leaching Performance of Low Grade Zinc Oxide Ore in the System of (NH4)2SO4-NH3-H2O

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Song, Kaiwei^1,2 ; Yuan, Jingjie^1,3 ; Shen, Peilun^1,2 ; Li, Jialei^1,2 ; Li, Jianmin^1,2 ; Liu, Dianwen^1,2

Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, Yunnan

650093, China^1

State Key Laboratory of Complex Nonferrous Metal Resource Cleaning Utilization, Kunming, YUNNAN

650093, China^2

Sichuan Metallurgical Geological Exploration Institute, Chengdu, Sichuan

610051, China^3

关键词: Ammonium Sulfate;    Leaching rates;    Leaching test;    Low-grade zinc oxide ores;    Optimum conditions;    Reaction temperature;    Stirring rates;    Systematic study;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/2/022114/pdf
DOI  :  10.1088/1755-1315/170/2/022114

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Leaching test on the oxidized zinc ore from Kashi, Xinjiang Autonomous Region is studied in the (NH4)2SO4-NH3-H2O system; Systematic studies are made to show the effects of various factors on the leaching rate of zinc. The optimum conditions for leaching is finally confirmed, i.e., the grinding fineness is 80% -74um, concentration of ammonium sulfate is 2mol/L, concentration of ammonia is 4mol/L, reaction temperature is 40°C, the ratio of liquid to solid is 4: 1; stirring rate is 300rpm and leaching time is 3h. Ultimately, the leaching rate of Zn could reach more than 91%.