Optimization of reaction conditions for the electroleaching of manganese from low-grade pyrolusite

Xing-ran Zhang; Zuo-hua Liu; Xing Fan; Xin Lian; Chang-yuan Tao

doi:10.1007/s12613-015-1176-x

Volume 22 Issue 11

Nov. 2015

Turn off MathJax

Article Contents

Abstract

International Journal of Minerals, Metallurgy and Materials > 2015 > 22(11): 1121-1130. > DOI: 10.1007/s12613-015-1176-x

Xing-ran Zhang, Zuo-hua Liu, Xing Fan, Xin Lian, and Chang-yuan Tao, Optimization of reaction conditions for the electroleaching of manganese from low-grade pyrolusite, Int. J. Miner. Metall. Mater., 22(2015), No. 11, pp.1121-1130. https://dx.doi.org/10.1007/s12613-015-1176-x

Cite this article as:

PDF (869 KB)

Optimization of reaction conditions for the electroleaching of manganese from low-grade pyrolusite

Xing-ran Zhang^1,2),
Zuo-hua Liu^1,2),
Xing Fan^1,2),
Xin Lian^1,2) and
Chang-yuan Tao^1,2), ,

Author Affilications

College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China
Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, Chongqing, 400044, China

Funds:

This work was financially supported by the “121” Scientific and Technological Supporting Demonstration Project of Chongqing, China (No. cstc2014zktjccxB0043), and the Scientific Research and Technology Development Program of Guangxi, China (No. 2014BA10016).

Received: 31 March 2015; Revised: 22 May 2015; Accepted: 26 May 2015; Available Online: 10 June 2021

Graphical Abstract

Abstract

Abstract

In the present study, a response surface methodology was used to optimize the electroleaching of Mn from low-grade pyrolusite. Ferrous sulfate heptahydrate was used in this reaction as a reducing agent in sulfuric acid solutions. The effect of six process variables, including the mass ratio of ferrous sulfate heptahydrate to pyrolusite, mass ratio of sulfuric acid to pyrolusite, liquid-to-solid ratio, current density, leaching temperature, and leaching time, as well as their binary interactions, were modeled. The results revealed that the order of these factors with respect to their effects on the leaching efficiency were mass ratio of ferrous sulfate heptahydrate to pyrolusite > leaching time > mass ratio of sulfuric acid to pyrolusite > liquid-to-solid ratio > leaching temperature > current density. The optimum conditions were as follows: 1.10:1 mass ratio of ferrous sulfate heptahydrate to pyrolusite, 0.9:1 mass ratio of sulfuric acid to pyrolusite, liquid-to-solid ratio of 0.7:1, current density of 947 A/m², leaching time of 180 min, and leaching temperature of 73℃. Under these conditions, the predicted leaching efficiency for Mn was 94.1%; the obtained experimental result was 95.7%, which confirmed the validity of the model.
- pyrolusite,
- manganese ore treatment,
- electroleaching,
- reaction conditions,
- optimization

FullText(HTML)

References (0)

[1]	Yong-tao Zhang, Zhi-gang Dan, Ning Duan, Bao-ping Xin. Reductive recovery of manganese from low-grade manganese dioxide ore using toxic nitrocellulose acid wastewater as reductant [J]. International Journal of Minerals, Metallurgy and Materials, 2018, 25(9): 990-999. DOI: 10.1007/s12613-018-1649-9
[2]	Hong-mei Shao, Xiao-yi Shen, Yi Sun, Yan Liu, Yu-chun Zhai. Reaction condition optimization and kinetic investigation of roasting zinc oxide ore using (NH₄)₂SO₄ [J]. International Journal of Minerals, Metallurgy and Materials, 2016, 23(10): 1133-1140. DOI: 10.1007/s12613-016-1332-y
[3]	Qing-quan Lin, Guo-hua Gu, Hui Wang, Ren-feng Zhu, You-cai Liu, Jian-gang Fu. Preparation of manganese sulfate from low-grade manganese carbonate ores by sulfuric acid leaching [J]. International Journal of Minerals, Metallurgy and Materials, 2016, 23(5): 491-500. DOI: 10.1007/s12613-016-1260-x
[4]	Ya-li Feng, Shi-yuan Zhang, Hao-ran Li. Reductive leaching of manganese from low-grade pyrolusite ore in sulfuric acid using pyrolysis-pretreated sawdust as a reductant [J]. International Journal of Minerals, Metallurgy and Materials, 2016, 23(3): 241-246. DOI: 10.1007/s12613-016-1232-1
[5]	Ai-fei Yi, Meng-ni Wu, Peng-wei Liu, Ya-li Feng, Hao-ran Li. Reductive leaching of low-grade manganese ore with pre-processed cornstalk [J]. International Journal of Minerals, Metallurgy and Materials, 2015, 22(12): 1245-1251. DOI: 10.1007/s12613-015-1191-y
[6]	Gen-sheng Feng, Sheng-li Wu, Hong-liang Han, Luo-wen Ma, Wei-zhong Jiang, Xiao-qin Liu. Sintering characteristics of fluxes and their structure optimization [J]. International Journal of Minerals, Metallurgy and Materials, 2011, 18(3): 270-276. DOI: 10.1007/s12613-011-0433-x
[7]	Dian-qiao Geng, Hong Lei, Ji-cheng He. Optimization of mixing time in a ladle with dual plugs [J]. International Journal of Minerals, Metallurgy and Materials, 2010, 17(6): 709-714. DOI: 10.1007/s12613-010-0378-5
[8]	Muqing Qiu, Genxuan Wang, Weimin Zhang, Shuiying Xiong. Optimizing conditions for bacterial leaching of copper from discarded mines [J]. International Journal of Minerals, Metallurgy and Materials, 2006, 13(2): 108-111. DOI: 10.1016/S1005-8850(06)60024-8
[9]	Zaigen Mu, Zhe Wu, Long Xiu. Fuzzy optimization of space frame [J]. International Journal of Minerals, Metallurgy and Materials, 2002, 9(2): 145-148.
[10]	Jing Yang, Denpong Soodphakdee, Masud Behnia. Correlations Based on CFD and Their Applications in Optimization for Staggered and Parallel Plate Fin Heatsinks [J]. International Journal of Minerals, Metallurgy and Materials, 2002, 9(1): 25-30.