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Preparation of Mn3O4 from Electrolytic Manganese Anode Slime and Its Morphology Control
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Tengfa LONG1, 2, Jiaying DU1, 2, Kaini ZHANG1, 2, Yao JIN1, 2, Wenli TANG1, 2, Gengfei TANG3
Mining and Metallurgical Engineering | 2026, 46(2) : 163 - 170
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Mining and Metallurgical Engineering | 2026, 46(2): 163-170
• METALLURGY •
Preparation of Mn3O4 from Electrolytic Manganese Anode Slime and Its Morphology Control
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Tengfa LONG1, 2, Jiaying DU1, 2, Kaini ZHANG1, 2, Yao JIN1, 2, Wenli TANG1, 2, Gengfei TANG3
Affiliations
  • 1.Guangxi Key Laboratory of Environment Processes and Remediation in Ecologically Fragile Regions, Guilin 541006, Guangxi, China
  • 2.College of Environment and Resources, Guangxi Normal University, Guilin 541006, Guangxi, China
  • 3.Jingxi Daxinan Manganese Co., Ltd., Jingxi 533803, Guangxi, China
doi: 10.3969/j.issn.0253-6099.2026.02.026
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With electrolytic manganese anode slime as raw material and high-purity manganese sulfate as the precursor, manganese tetroxide (Mn3O4) particles were prepared via a two-step oxidation method. The response surface methodology was adopted to optimize the processing parameters. On this basis, the effects of surfactants on the particle size, specific surface area and micromorphology of Mn3O4 were systematically investigated. The results show that under the optimal conditions including manganese and ammonia in a molar ratio of 1∶2, reaction temperature of 65 ℃ and reaction time of 40 min, the manganese content of the synthesized Mn3O4 reaches 71.1%. Surfactants exert negligible impacts on the phase composition and manganese content of Mn3O4, but obvious effects on its microscopic surface morphology, specific surface area and particle size. The Mn3O4 synthesized by adding polyvinylpyrrolidone presents a quasi-spherical morphology with uniform particles and narrow size distribution. With a particle size of 32.65 nm and a specific surface area of 18.49 m2/g, the synthesized product satisfies the quality standard of high-purity Mn3O4 in terms of manganese content.

electrolytic manganese anode slime  /  Mn3O4  /  two-step oxidation method  /  morphology control  /  response surface methodology  /  surfactant
龙腾发, 杜佳颖, 张凯妮, 金尧, 唐文丽, 唐庚飞. 电解锰阳极泥制备四氧化三锰及其形貌控制. 矿冶工程杂志, 2026 , 46 (2) : 163 -170 . DOI: 10.3969/j.issn.0253-6099.2026.02.026
Tengfa LONG, Jiaying DU, Kaini ZHANG, Yao JIN, Wenli TANG, Gengfei TANG. Preparation of Mn3O4 from Electrolytic Manganese Anode Slime and Its Morphology Control[J]. Mining and Metallurgical Engineering, 2026 , 46 (2) : 163 -170 . DOI: 10.3969/j.issn.0253-6099.2026.02.026
Appendix
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Year 2026 volume 46 Issue 2
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Article Info
doi: 10.3969/j.issn.0253-6099.2026.02.026
  • Receive Date：2025-10-21
  • Online Date：2026-10-08
Article Data
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  • Received：2025-10-21
Funding
Affiliations
    1.Guangxi Key Laboratory of Environment Processes and Remediation in Ecologically Fragile Regions, Guilin 541006, Guangxi, China
    2.College of Environment and Resources, Guangxi Normal University, Guilin 541006, Guangxi, China
    3.Jingxi Daxinan Manganese Co., Ltd., Jingxi 533803, Guangxi, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2026.02.026
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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