Extraction of Valuable Metals from High-Iron Zinc Sulfide Concentrate by Reductive Leaching
International Journal of Mineral Processing and Extractive Metallurgy
Volume 3, Issue 4, December 2018, Pages: 83-90
Received: Nov. 29, 2018; Accepted: Dec. 29, 2018; Published: Jan. 29, 2019
Views 131      Downloads 27
Authors
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
Article Tools
Follow on us
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.
Keywords
High-Iron Zinc Ore, Neutral Leaching Residue, Reductive Leaching, Leaching Efficiency
To cite this article
Cunxiong Li, Chang Wei, Zhigan Deng, Fan Zhang, Gang Fan, Xingbin Li, Minting Li, Extraction of Valuable Metals from High-Iron Zinc Sulfide Concentrate by Reductive Leaching, International Journal of Mineral Processing and Extractive Metallurgy. Vol. 3, No. 4, 2018, pp. 83-90. doi: 10.11648/j.ijmpem.20180304.12
Copyright
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
References
[1]
Xie K Q, Yang X W, Wang J K, Yan J F, Shen Q F. Kinetic study on pressure leaching of high iron sphalerite concentrate. Transactions of Nonferrous Metals Society of China, 2007, 17(1): 187-194.
[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.
[4]
Han J Q, Liu W, Qin W Q, Peng B, Yang K, Zheng Y X. Recovery of zinc and iron from high iron-bearing zinc calcine by selective reduction roasting. Journal of Industrial and Engineering Chemistry, 2015, 22: 272–279.
[5]
Wang J K, Dong Y, Zhou T X. Industrial tests and commercialization of the high-iron zinc sulphide concentrate. Engineering Science, 2005, 7(1): 202-206. (In Chinese).
[6]
Yang F, Deng Z G, Wei C, Li C X, Li X B. Iron-removal by hematite from leaching liquor of high iron sphalerite. The Chinese Journal of nonferrous metals, 2014, 24(9): 2387-2391. (In Chinese).
[7]
Ramachandra S V N, Deo K, Biswas A K. Dissolution of zinc ferrite samples in acids. Hydrometallurgy, 1976, 2: 171-184.
[8]
Jiang G M, Peng B, Liang Y J, Chai L Y, Wang Q W, Li Q Z, Hu M. Recovery of valuable metals from zinc leaching residue by sulfate roasting and water leaching. Transactions of Nonferrous Metals Society of China, 2017, 27(5): 1180-1187.
[9]
Li M, Peng B, Chai L Y, Peng N, Yan H, Hou D. Recovery of iron from zinc leaching residue by selective reduction roasting with carbon. Journal of Hazardous Materials, 2012, 237-238: 323-330.
[10]
Wang X, Srinivasakannan C, Duan X H, Peng J H, Yang D J, Ju S H. Leaching kinetics of zinc residues augmented with ultrasound. Separation and Purification Technology, 2013, 115: 66-72.
[11]
Zhang Y, Li X, Pan L, Liang X Y, Li X P. Studies on the kinetics of zinc and indium extraction from indium-bearing zinc ferrite. Hydrometallurgy, 2010, 100(3): 172-176.
[12]
Furlani G, Moscardini E, Pagnaelli F, Ferella F, Vegliò T L. Recovery of manganese from zinc alkaline batteries by reductive acid leaching using carbohydrates as reductant. Hydrometallurgy, 2009, 99: 115–118.
[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.
[15]
Markus H, Fugleberg S, Valtakari D, Salmi T, Murzin D Y, Lahtinen M. Chemical Engineering Scence, 2004, 59(4): 919-930.
[16]
Qin W Q, Ma X H, Niu Y J, Lai S H, Yang C R, Jiao F, Ren, L Y. Reductive leaching of gallium from zinc residue. Hydrometallurgy, 2012, 113−114: 195-199.
[17]
Zhang C, Min X B, Zhang J Q, Wang M, Zhou B S, Shen C. Reductive acid leaching of cadmium fromzinc neutral leaching residue using hydrazine sulfate. Transactions of Nonferrous Metals Society of China, 2015, 25(12): 4175-4182.
[18]
Yamada T, Kuramochi S, Sato S, Shibachi Y. The recent operation of the hematite process at the Iijima Zinc Refinery. In zinc and lead processing. Montreal, Canada, 1998, 627-638.
ADDRESS
Science Publishing Group
548 FASHION AVENUE
NEW YORK, NY 10018
U.S.A.
Tel: (001)347-983-5186