氯化物体系单槽双室电积锰工艺研究

doi:10.11896/cldb.22010135

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Abstract The processes of manganese electrodeposition in the chloride salt electrolyte system with a single-tank double-chamber electrolyzer were studied. The process of adsorption and decontamination of impurity ions in high Mn²⁺ electrolyte by chelating resin (TP-207) with imino-diacetic acid functional group was initially explored, and four ion adsorption models were proposed. The process parameters of manganese electrodeposition by diaphragm of chloride salt system were determined. Meanwhile, it was compared with the conventional sulfate system and process. The results show that: the best condition of electrolysis is that the initial concentration of manganese ions in cathode solution (with small influence) is 0.9 mol/L, the lower the temperature of electrolyte, the higher the electric efficiency, the best temperature is 5 ℃, the cathode current density (with general influence) is 450 A·m^-2, and the pH (with great influence) is 6.5 of weak acidity. The current efficiency obtained under this best process condition reach to 83.211%, and the lowest electric consumption is 4 022.7 kW·h·t^-1, the corresponding Mn product crystalline type is γ-type.

Key words： chlorine salt system chelate resin adsorption purification electrolytic manganese single-tank and double-chamber

Published: 10 February 2024 Online: 2024-02-19

CLC number:

TF803.27

Fund:National Natural Science Foundation of China (52274409, 52064028), Yunnan Province Technological Innovation Talent Program (2019HB111), Zijinshan Gold and Copper Mine Transversal Science and Technology Development Project (KKK0202152047).

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	LI Jiamin
	CHANG Linhui
	CHEN Buming
	HUANG Hui
	GUO Zhongcheng

Cite this article:

LI Jiamin,CHANG Linhui,CHEN Buming, et al. Study of Mn Electrowinning Process in Chloride System with Single-tank and Double-chamber[J]. Materials Reports, 2024, 38(3): 22010135-6.

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http://www.mater-rep.com/EN/10.11896/cldb.22010135 OR http://www.mater-rep.com/EN/Y2024/V38/I3/22010135

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