Sulfur resource recovery based on electrolytic manganese residue calcination and manganese oxide ore desulfurization for the clean production of electrolytic manganese

doi:10.1016/j.cjche.2019.11.013

中国化学工程学报 ›› 2020, Vol. 28 ›› Issue (3): 864-870.DOI: 10.1016/j.cjche.2019.11.013

• Energy, Resources and Environmental Technology • 上一篇下一篇

Sulfur resource recovery based on electrolytic manganese residue calcination and manganese oxide ore desulfurization for the clean production of electrolytic manganese

Dong Sun^1,2, Lin Yang^1,2, Ning Liu³, Wenju Jiang^1,2, Xia Jiang^1,2, Jianjun Li^1,2, Zhengyou Yang³, Zhengping Song³

1 College of Architecture and Environment, Sichuan University, Chengdu 610065, China;
2 National Engineering Research Center for Flue Gas Desulfurization, Sichuan University, Chengdu 610065, China;
3 Ningxia Tianyuan Manganese Industry Group Co. Ltd, Zhongwei 755103, China

收稿日期:2019-09-10 修回日期:2019-11-06 出版日期:2020-03-28 发布日期:2020-06-11
通讯作者: Lin Yang, Wenju Jiang
基金资助:
This work was supported by the National Key R&D Program of China (No. 2018YFC0213405).

Sulfur resource recovery based on electrolytic manganese residue calcination and manganese oxide ore desulfurization for the clean production of electrolytic manganese

Dong Sun^1,2, Lin Yang^1,2, Ning Liu³, Wenju Jiang^1,2, Xia Jiang^1,2, Jianjun Li^1,2, Zhengyou Yang³, Zhengping Song³

1 College of Architecture and Environment, Sichuan University, Chengdu 610065, China;
2 National Engineering Research Center for Flue Gas Desulfurization, Sichuan University, Chengdu 610065, China;
3 Ningxia Tianyuan Manganese Industry Group Co. Ltd, Zhongwei 755103, China

Received:2019-09-10 Revised:2019-11-06 Online:2020-03-28 Published:2020-06-11
Contact: Lin Yang, Wenju Jiang
Supported by:
This work was supported by the National Key R&D Program of China (No. 2018YFC0213405).

摘要/Abstract

摘要： An environmentally friendly and resource-conserving route to the clean production of electrolytic manganese was developed, in which the electrolytic manganese residue (EMR) was initially calcined for cement buffering; then the generated SO₂-containing flue gas was managed using manganese oxide ore and anolyte (MOOA) desulfurization; at last, the desulfurized slurry was introduced to the electrolytic manganese production (EMP). Results showed that 4.0 wt% coke addition reduced the sulfur of calcined EMR to 0.9%, thereby satisfying the cement-buffer requirement. Pilot-scale desulfurization showed that about 7.5 vol% of high SO₂ containing flue gas can be cleaned to less than 0.1 vol% through a five-stage countercurrent MOOA desulfurization. The desulfurized slurry had 42.44 g·L^-1 Mn²⁺ and 1.92 g·L^-1 S₂O₆^2-, which was suitable for electrowinning after purification, and the purity of manganese product was 99.93%, satisfy the National Standard of China YB/T051-2015. This new integrated technology fulfilled 99.7% of sulfur reutilization from the EMR and 94.1% was effectively used to the EMP. The MOOA desulfurization linked the EMP a closed cycle without any pollutant discharge, which promoted the cleaner production of EMP industry.

关键词: Electrolytic manganese residue, Manganese oxide ore desulfurization, Sulfur recycling, Cleaner production

Abstract: An environmentally friendly and resource-conserving route to the clean production of electrolytic manganese was developed, in which the electrolytic manganese residue (EMR) was initially calcined for cement buffering; then the generated SO₂-containing flue gas was managed using manganese oxide ore and anolyte (MOOA) desulfurization; at last, the desulfurized slurry was introduced to the electrolytic manganese production (EMP). Results showed that 4.0 wt% coke addition reduced the sulfur of calcined EMR to 0.9%, thereby satisfying the cement-buffer requirement. Pilot-scale desulfurization showed that about 7.5 vol% of high SO₂ containing flue gas can be cleaned to less than 0.1 vol% through a five-stage countercurrent MOOA desulfurization. The desulfurized slurry had 42.44 g·L^-1 Mn²⁺ and 1.92 g·L^-1 S₂O₆^2-, which was suitable for electrowinning after purification, and the purity of manganese product was 99.93%, satisfy the National Standard of China YB/T051-2015. This new integrated technology fulfilled 99.7% of sulfur reutilization from the EMR and 94.1% was effectively used to the EMP. The MOOA desulfurization linked the EMP a closed cycle without any pollutant discharge, which promoted the cleaner production of EMP industry.

Key words: Electrolytic manganese residue, Manganese oxide ore desulfurization, Sulfur recycling, Cleaner production

Dong Sun, Lin Yang, Ning Liu, Wenju Jiang, Xia Jiang, Jianjun Li, Zhengyou Yang, Zhengping Song. Sulfur resource recovery based on electrolytic manganese residue calcination and manganese oxide ore desulfurization for the clean production of electrolytic manganese[J]. 中国化学工程学报, 2020, 28(3): 864-870.

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Sulfur resource recovery based on electrolytic manganese residue calcination and manganese oxide ore desulfurization for the clean production of electrolytic manganese

Sulfur resource recovery based on electrolytic manganese residue calcination and manganese oxide ore desulfurization for the clean production of electrolytic manganese

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