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Recovery Indium from Indium-Enriched Cementation and Co-precipitation Simultaneously Fe-As

  • Hui Huang
  • Zhigan DengEmail author
  • Chang Wei
  • Xingbin Li
  • Gang Fan
  • Cunxiong Li
  • Minting Li
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

A process for extracting of indium from indium-enriched cementation produced in zinc hydrometallurgy process was investigated by oxygen pressure leaching and normal pressure and oxygen-rich leaching. The indium was leached in sulphuric acid medium, at the same time of iron and arsenic were co-precipitated in the form of FeAsO4. The conditions of selective leaching were explored in the presence of oxidant (H2O2). The experimental results indicated that high efficiency of extracting indium and co-precipitation of iron and arsenic was obtained with the appropriate operation conditions. Which were determined as the initial sulphuric acid concentration of 0.26 mol/L, liquid–solid ratio of 10 mL/g, at 80 °C for 6 h. And in the process controlled the pH between 1.3 and 1.8, the sulphuric acid total amount of 0.75 mol/L and add H2O2 of 0.6 mL/g. Under the optimum conditions, the leaching per cent of indium was more than 92%, precipitation per cent of iron and arsenic was more than 58 and 60%. Compared with traditional methods of leaching, this process has the characteristics of low acid consumption high leaching rate of indium and removed simultaneously iron and arsenic.

Keywords

Indium Acid leaching Co-precipitation Ferric arsenate 

Notes

Acknowledgements

We acknowledge the National Natural Science Foundation of China (No. 51804146, 51564030, 51664030, 51664029, 51664038), National Basic Research Program of China No.2014CB643404), Yunnan Province Applied Foundation Research Programs (No.2016FB097) and Analysis and Testing Center of Kunming University of Science and Technology, China.

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Hui Huang
    • 1
    • 2
  • Zhigan Deng
    • 1
    Email author
  • Chang Wei
    • 1
  • Xingbin Li
    • 1
  • Gang Fan
    • 1
  • Cunxiong Li
    • 1
  • Minting Li
    • 1
  1. 1.Faculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunmingChina
  2. 2.Metallurgy & Materials Engineering FacultyKunming Metallurgy CollegeKunmingChina

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