Research on leaching of calcification transition slag of bastnaesite

被引：1
作者：
Dou, Zhi-He [1 ]
Liu, Jiang [1 ]
Zhang, Ting-An [1 ]
Huang, Yu-Kun [1 ]
机构：
[1] Key Laboratory of Ecological Metallurgy of Multimetal Ores, Ministry of Education, Northeastern University, Shenyang
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2015年 / 36卷 / 05期
关键词：
Acid leaching; Bastnaesite; Calcification transition; Calcification transition slag; High pressure DSC;
D O I：
10.3969/j.issn.1005-3026.2015.05.016
中图分类号：
学科分类号：
摘要：
The new technology of bastnaesite in calcification transition decomposition-acid leaching to extract rare earth was proposed. The pressurized DSC was used to investigate the kinetics of calcification transition slag in acid leaching. The leaching effects of leaching temperature, acid concentration, leaching time, liquid to solid ratio were studied. The results showed that the acid leaching reaction of calcification transition slag can take place at room temperature of 30℃, and the apparent activation energy and reaction order are 0.014 kJ/mol and 0.11, respectively. The appropriate strengthening acid leaching conditions are the leaching temperature of 80℃, the concentration of hydrochloric acid of 1 mol·L-1, the leaching time of 30 min and the liquid-solid ratio of 15:1. ©, 2015, Northeastern University. All right reserved.
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页码：680 / 684
页数：4
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