Extraction of Valuable Metals from High-Iron Zinc Sulfide Concentrate by Reductive Leaching

Cunxiong Li; Chang Wei; Zhigan Deng; Fan Zhang; Gang Fan; Xingbin Li; Minting Li

doi:doi:10.11648/j.ijmpem.20180304.12

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Extraction of Valuable Metals from High-Iron Zinc Sulfide Concentrate by Reductive Leaching

Cunxiong Li, Chang Wei, Zhigan Deng, Fan Zhang, Gang Fan, Xingbin Li, Minting Li

Published in International Journal of Mineral Processing and Extractive Metallurgy (Volume 3, Issue 4)

Received: 29 November 2018 Accepted: 29 December 2018 Published: 29 January 2019

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Abstract

This study was conducted as part of the development of a new process to recover valuable metals of zinc, copper and indium from high-iron zinc sulfide concentrate (HIZSC) by the reductive leaching of high-iron zinc neutral leaching residue (HIZNLR) with zinc concentrate precipitation of copper with iron powder, neutralization of free sulfuric acid with zinc calcine, precipitation of indium with zinc powder and hematite precipitation to reject iron. Among these stages, reductive leaching is the crucial step, which makes that valuable metals in the materials can be effectively leached and ferric iron in the solution is reduced to ferrous iron. The reductive leachate enables copper, indium and iron separation from the solution in the subsequent process. The results show that by increasing the sulfuric acid concentration, HIZSC addition and prolonging the reaction time, the leaching efficiency of zinc, copper, indium and iron in the sample materials was significantly increased. The maximum metal-leaching efficiency was obtained; 84.3% of the iron was in its soluble ferrous state, and zinc ferrite in the HIZNLR was almost entirely dissolved under the experimental conditions of an H₂SO₄-to-HIZNLR mass ratio of 1.6, a liquid-to-solid ratio of 11.34 mL/g, a temperature of 90°C, an HIZSC addition of 1.05 times of the stoichiometric amount and a reaction time of 5 h.

Published in	International Journal of Mineral Processing and Extractive Metallurgy (Volume 3, Issue 4)
DOI	10.11648/j.ijmpem.20180304.12
Page(s)	83-90
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

High-Iron Zinc Ore, Neutral Leaching Residue, Reductive Leaching, Leaching Efficiency

References

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[2]	Li C X, Wei C, Xu H S, Li M T, Li X B, Deng Z G, Fan G. Oxidative pressure leaching of sphalerite concentrate with high indium and iron content in sulfuric acid medium. Hydrometallurgy, 2010, 102(1-4): 91-94.
[3]	Liu W, Han J W, Qin W Q, Chai L Y, Hou D K, Kong Y. Reduction roasting of high iron bearing zinc calcine for recovery of zinc and iron. Canadian Metallurgical Quarterly, 2014, 53(2): 176–182.
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[13]	Cheng T C M. Production of hematite in acidic zinc sulfate media, Dissertation for the Doctoral Degree. Montreal: McGill University, 2002, 1−3.
[14]	Markus H, Fugleberg S, Valtakari D, Salmi T, Murzin D Y, Lahtinen M. Reduction of ferric to ferrous with sphalerite concentrate, kinetic modelling. Hydrometallurgy, 2004, 73: 269-282.
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APA Style

Cunxiong Li, Chang Wei, Zhigan Deng, Fan Zhang, Gang Fan, et al. (2019). Extraction of Valuable Metals from High-Iron Zinc Sulfide Concentrate by Reductive Leaching. International Journal of Mineral Processing and Extractive Metallurgy, 3(4), 83-90. https://doi.org/10.11648/j.ijmpem.20180304.12

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ACS Style

Cunxiong Li; Chang Wei; Zhigan Deng; Fan Zhang; Gang Fan, et al. Extraction of Valuable Metals from High-Iron Zinc Sulfide Concentrate by Reductive Leaching. Int. J. Miner. Process. Extr. Metall. 2019, 3(4), 83-90. doi: 10.11648/j.ijmpem.20180304.12

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AMA Style

Cunxiong Li, Chang Wei, Zhigan Deng, Fan Zhang, Gang Fan, et al. Extraction of Valuable Metals from High-Iron Zinc Sulfide Concentrate by Reductive Leaching. Int J Miner Process Extr Metall. 2019;3(4):83-90. doi: 10.11648/j.ijmpem.20180304.12

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@article{10.11648/j.ijmpem.20180304.12,
  author = {Cunxiong Li and Chang Wei and Zhigan Deng and Fan Zhang and Gang Fan and Xingbin Li and Minting Li},
  title = {Extraction of Valuable Metals from High-Iron Zinc Sulfide Concentrate by Reductive Leaching},
  journal = {International Journal of Mineral Processing and Extractive Metallurgy},
  volume = {3},
  number = {4},
  pages = {83-90},
  doi = {10.11648/j.ijmpem.20180304.12},
  url = {https://doi.org/10.11648/j.ijmpem.20180304.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmpem.20180304.12},
  abstract = {This study was conducted as part of the development of a new process to recover valuable metals of zinc, copper and indium from high-iron zinc sulfide concentrate (HIZSC) by the reductive leaching of high-iron zinc neutral leaching residue (HIZNLR) with zinc concentrate precipitation of copper with iron powder, neutralization of free sulfuric acid with zinc calcine, precipitation of indium with zinc powder and hematite precipitation to reject iron. Among these stages, reductive leaching is the crucial step, which makes that valuable metals in the materials can be effectively leached and ferric iron in the solution is reduced to ferrous iron. The reductive leachate enables copper, indium and iron separation from the solution in the subsequent process. The results show that by increasing the sulfuric acid concentration, HIZSC addition and prolonging the reaction time, the leaching efficiency of zinc, copper, indium and iron in the sample materials was significantly increased. The maximum metal-leaching efficiency was obtained; 84.3% of the iron was in its soluble ferrous state, and zinc ferrite in the HIZNLR was almost entirely dissolved under the experimental conditions of an H2SO4-to-HIZNLR mass ratio of 1.6, a liquid-to-solid ratio of 11.34 mL/g, a temperature of 90°C, an HIZSC addition of 1.05 times of the stoichiometric amount and a reaction time of 5 h.},
 year = {2019}
}

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TY  - JOUR
T1  - Extraction of Valuable Metals from High-Iron Zinc Sulfide Concentrate by Reductive Leaching
AU  - Cunxiong Li
AU  - Chang Wei
AU  - Zhigan Deng
AU  - Fan Zhang
AU  - Gang Fan
AU  - Xingbin Li
AU  - Minting Li
Y1  - 2019/01/29
PY  - 2019
N1  - https://doi.org/10.11648/j.ijmpem.20180304.12
DO  - 10.11648/j.ijmpem.20180304.12
T2  - International Journal of Mineral Processing and Extractive Metallurgy
JF  - International Journal of Mineral Processing and Extractive Metallurgy
JO  - International Journal of Mineral Processing and Extractive Metallurgy
SP  - 83
EP  - 90
PB  - Science Publishing Group
SN  - 2575-1859
UR  - https://doi.org/10.11648/j.ijmpem.20180304.12
AB  - This study was conducted as part of the development of a new process to recover valuable metals of zinc, copper and indium from high-iron zinc sulfide concentrate (HIZSC) by the reductive leaching of high-iron zinc neutral leaching residue (HIZNLR) with zinc concentrate precipitation of copper with iron powder, neutralization of free sulfuric acid with zinc calcine, precipitation of indium with zinc powder and hematite precipitation to reject iron. Among these stages, reductive leaching is the crucial step, which makes that valuable metals in the materials can be effectively leached and ferric iron in the solution is reduced to ferrous iron. The reductive leachate enables copper, indium and iron separation from the solution in the subsequent process. The results show that by increasing the sulfuric acid concentration, HIZSC addition and prolonging the reaction time, the leaching efficiency of zinc, copper, indium and iron in the sample materials was significantly increased. The maximum metal-leaching efficiency was obtained; 84.3% of the iron was in its soluble ferrous state, and zinc ferrite in the HIZNLR was almost entirely dissolved under the experimental conditions of an H2SO4-to-HIZNLR mass ratio of 1.6, a liquid-to-solid ratio of 11.34 mL/g, a temperature of 90°C, an HIZSC addition of 1.05 times of the stoichiometric amount and a reaction time of 5 h.
VL  - 3
IS  - 4
ER  -

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Author Information

Cunxiong Li

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, China
Chang Wei

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, China
Zhigan Deng

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, China
Fan Zhang

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, China
Gang Fan

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, China
Xingbin Li

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, China
Minting Li

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, China

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Plain Text BibTeX RIS

APA Style

Cunxiong Li, Chang Wei, Zhigan Deng, Fan Zhang, Gang Fan, et al. (2019). Extraction of Valuable Metals from High-Iron Zinc Sulfide Concentrate by Reductive Leaching. International Journal of Mineral Processing and Extractive Metallurgy, 3(4), 83-90. https://doi.org/10.11648/j.ijmpem.20180304.12

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ACS Style

Cunxiong Li; Chang Wei; Zhigan Deng; Fan Zhang; Gang Fan, et al. Extraction of Valuable Metals from High-Iron Zinc Sulfide Concentrate by Reductive Leaching. Int. J. Miner. Process. Extr. Metall. 2019, 3(4), 83-90. doi: 10.11648/j.ijmpem.20180304.12

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AMA Style

Cunxiong Li, Chang Wei, Zhigan Deng, Fan Zhang, Gang Fan, et al. Extraction of Valuable Metals from High-Iron Zinc Sulfide Concentrate by Reductive Leaching. Int J Miner Process Extr Metall. 2019;3(4):83-90. doi: 10.11648/j.ijmpem.20180304.12

Copy | Download

@article{10.11648/j.ijmpem.20180304.12,
  author = {Cunxiong Li and Chang Wei and Zhigan Deng and Fan Zhang and Gang Fan and Xingbin Li and Minting Li},
  title = {Extraction of Valuable Metals from High-Iron Zinc Sulfide Concentrate by Reductive Leaching},
  journal = {International Journal of Mineral Processing and Extractive Metallurgy},
  volume = {3},
  number = {4},
  pages = {83-90},
  doi = {10.11648/j.ijmpem.20180304.12},
  url = {https://doi.org/10.11648/j.ijmpem.20180304.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmpem.20180304.12},
  abstract = {This study was conducted as part of the development of a new process to recover valuable metals of zinc, copper and indium from high-iron zinc sulfide concentrate (HIZSC) by the reductive leaching of high-iron zinc neutral leaching residue (HIZNLR) with zinc concentrate precipitation of copper with iron powder, neutralization of free sulfuric acid with zinc calcine, precipitation of indium with zinc powder and hematite precipitation to reject iron. Among these stages, reductive leaching is the crucial step, which makes that valuable metals in the materials can be effectively leached and ferric iron in the solution is reduced to ferrous iron. The reductive leachate enables copper, indium and iron separation from the solution in the subsequent process. The results show that by increasing the sulfuric acid concentration, HIZSC addition and prolonging the reaction time, the leaching efficiency of zinc, copper, indium and iron in the sample materials was significantly increased. The maximum metal-leaching efficiency was obtained; 84.3% of the iron was in its soluble ferrous state, and zinc ferrite in the HIZNLR was almost entirely dissolved under the experimental conditions of an H2SO4-to-HIZNLR mass ratio of 1.6, a liquid-to-solid ratio of 11.34 mL/g, a temperature of 90°C, an HIZSC addition of 1.05 times of the stoichiometric amount and a reaction time of 5 h.},
 year = {2019}
}

Copy | Download

TY  - JOUR
T1  - Extraction of Valuable Metals from High-Iron Zinc Sulfide Concentrate by Reductive Leaching
AU  - Cunxiong Li
AU  - Chang Wei
AU  - Zhigan Deng
AU  - Fan Zhang
AU  - Gang Fan
AU  - Xingbin Li
AU  - Minting Li
Y1  - 2019/01/29
PY  - 2019
N1  - https://doi.org/10.11648/j.ijmpem.20180304.12
DO  - 10.11648/j.ijmpem.20180304.12
T2  - International Journal of Mineral Processing and Extractive Metallurgy
JF  - International Journal of Mineral Processing and Extractive Metallurgy
JO  - International Journal of Mineral Processing and Extractive Metallurgy
SP  - 83
EP  - 90
PB  - Science Publishing Group
SN  - 2575-1859
UR  - https://doi.org/10.11648/j.ijmpem.20180304.12
AB  - This study was conducted as part of the development of a new process to recover valuable metals of zinc, copper and indium from high-iron zinc sulfide concentrate (HIZSC) by the reductive leaching of high-iron zinc neutral leaching residue (HIZNLR) with zinc concentrate precipitation of copper with iron powder, neutralization of free sulfuric acid with zinc calcine, precipitation of indium with zinc powder and hematite precipitation to reject iron. Among these stages, reductive leaching is the crucial step, which makes that valuable metals in the materials can be effectively leached and ferric iron in the solution is reduced to ferrous iron. The reductive leachate enables copper, indium and iron separation from the solution in the subsequent process. The results show that by increasing the sulfuric acid concentration, HIZSC addition and prolonging the reaction time, the leaching efficiency of zinc, copper, indium and iron in the sample materials was significantly increased. The maximum metal-leaching efficiency was obtained; 84.3% of the iron was in its soluble ferrous state, and zinc ferrite in the HIZNLR was almost entirely dissolved under the experimental conditions of an H2SO4-to-HIZNLR mass ratio of 1.6, a liquid-to-solid ratio of 11.34 mL/g, a temperature of 90°C, an HIZSC addition of 1.05 times of the stoichiometric amount and a reaction time of 5 h.
VL  - 3
IS  - 4
ER  -

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