Limestone Neutralization and Hydrolysis of Indium and CrystallizationBehavior of CaSO4•2H2O

被引：0

作者：

Zheng Y. ^{[1
]}

Deng Z. ^{[1
]}

Fan G. ^{[1
]}

Wei C. ^{[1
]}

机构：

[1] Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming

来源：

Xiyou Jinshu/Chinese Journal of Rare Metals | 2020年 / 44卷 / 06期

关键词：

Calcium sulfate dihydrate; Indium; Reductive leaching solution;

D O I：

10.13373/j.cnki.cjrm.XY18100015

中图分类号：

学科分类号：

摘要：

In view of the problem of indium recovery from leaching solution of zinc leaching residue, the reaction behavior of precipitation of indium by hydrolysis of lime solution pH value was studied. The effects of end point pH, reaction time and reaction temperature on indium precipitation behavior were investigated. The experimental results showed that the optimum reaction conditions were as follows: the end point of solution was pH=4.5, reaction time was 120 min, reaction temperature was 85℃; under this condition, the comprehensive experimental study of zinc leaching residue reduction leaching solution was carried out by adding 5 g•L-1 crystal seeds and 400 r•min-1 stirring speed. The experimental results showed that the precipitation rate of indium reached 98%, and the loss rate of zinc was 2.9%. Indium was fully enriched in the residue, and the content of indium in the sediment reached 3600 g•t-1. The results of inductively coupled plasma-mass spectrometry (ICP-MS), X-ray diffraction (XRD) and scanning electron microscope-energy dispersive spectrometer (SEM-EDS) analysis showed that the precipitation of indium in the reduction leaching solution of zinc leaching residue was nearly completed. The main components of indium precipitation residue were CaSO4•2H2O and In(OH)3. SEM analysis showed that In(OH)3 was scattered on the surface of CaSO4•2H2O. © Editorial Office of Chinese Journal of Rare Metals. All right reserved.

引用

页码：622 / 629

页数：7

共 18 条

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