Electrochemical behavior of marmatite in sulfuric acid leaching

XU Zhifeng; QIU Dingfan; WANG Haibei

doi:10.13374/j.issn1001-053x.2007.03.005

Volume 29 Issue 3

Aug. 2021

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XU Zhifeng, QIU Dingfan, WANG Haibei. Electrochemical behavior of marmatite in sulfuric acid leaching[J]. Chinese Journal of Engineering, 2007, 29(3): 267-271. doi: 10.13374/j.issn1001-053x.2007.03.005

Citation:

XU Zhifeng, QIU Dingfan, WANG Haibei. Electrochemical behavior of marmatite in sulfuric acid leaching[J]. Chinese Journal of Engineering, 2007, 29(3): 267-271. doi: 10.13374/j.issn1001-053x.2007.03.005

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Electrochemical behavior of marmatite in sulfuric acid leaching

doi: 10.13374/j.issn1001-053x.2007.03.005

1. Faculty of Materials and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China;
2. Metallurgy and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China;
3. Beijing General Research Institute of Mining and Metallurgy, Beijing 100044, China

Received Date: 2005-12-25
Rev Recd Date: 2006-05-02

Available Online: 2021-08-16

Abstract

Abstract

In order to study the mechanism of the oxidative leaching of marmatite, the slurry of synthetic marmatite was selected as the research object. The electrochemical behavior of marmatite in sulfuric acid leaching was investigated by the three-electrode method. The experimental results proved the intermediate product of H₂S in the leaching of marmatite. The results also showed that oxygen, element sulfur disperser as well as chloride ions could accelerate the electrochemical oxidation of marmatite in sulfuric acid. The electrochemical oxidation of sphalerite was retarded but that of marmatite was promoted with the increase of acidity. Marmatite was much easier to be oxidized through electrochemistry than sphalerite. The electrochemical oxidation of marmatite should not be neglected in the sulfuric acid leaching.
- marmatite,
- sulfuric acid,
- oxidation,
- leaching,
- electrochemical behavior