Hydrogen Based Phase Transformation Separation of High Silicon Ferromanganese Ores

ZHANG Shumin; DONG Zaizheng; WEN Guodong; YUAN Shuai; LI Yanjun

doi:10.13779/j.cnki.issn1001-0076.2023.03.006

2023 Vol. 43, No. 3

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Article navigation > Conservation and Utilization of Mineral Resources > 2023 > 43(3): 60-66

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ZHANG Shumin, DONG Zaizheng, WEN Guodong, YUAN Shuai, LI Yanjun. Hydrogen Based Phase Transformation Separation of High Silicon Ferromanganese Ores[J]. Conservation and Utilization of Mineral Resources, 2023, 43(3): 60-66. doi: 10.13779/j.cnki.issn1001-0076.2023.03.006

Citation:

ZHANG Shumin, DONG Zaizheng, WEN Guodong, YUAN Shuai, LI Yanjun. Hydrogen Based Phase Transformation Separation of High Silicon Ferromanganese Ores[J]. Conservation and Utilization of Mineral Resources, 2023, 43(3): 60-66. doi: 10.13779/j.cnki.issn1001-0076.2023.03.006

Hydrogen Based Phase Transformation Separation of High Silicon Ferromanganese Ores

1.
School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China
2.
State Key Laboratory of Mineral Processing Science and Technology, Beijing 102628, China
3.
National−local Joint Engineering Research Center of High−efficient Exploitation Technology for Refractory Iron Ore Resources, Shenyang 110819, China
4.
State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China

More Information

Corresponding author: DONG Zaizheng

Received Date: 05 June 2023

Publish Date: 15 June 2023

Abstract

Abstract

Ferromanganese ore is an important raw material for manganese and iron beneficiation and smelting. It is difficult to separate manganese and iron efficiently due to factors such as isomorphism and fine particle embedding. Thetechnological process of hydrogen based mineral phase transformation magnetic separation was established for high silicon ferromanganese ores, and the effects of roasting temperature, roasting time, reduction gas concentration and total gas volume on the separation of ferromanganese and the conversion rate of manganese divalent were investigated. The experimental results show that under the conditions of grinding fineness of −0.074 mm accounting for 72%, roasting temperature of 660 ℃, gas volume ratio CO: H₂=1:3, reducing gas volume concentration of 50%, total gas volume of 600 mL/min, roasting time of 40 minutes, magnetic separation magnetic field strength of 1070 Oe, a manganese concentrate with a total manganese grade of 31.00%, a recovery rate of 91.01%, a divalent manganese conversion rate of 91.29%, and an iron concentrate with an iron grade of 28.50% and a recovery rate of 50.63% can be obtained. The results of chemical composition analysis, XRD analysis and SEM−EDS analysis show that manganese minerals and iron minerals have been effectively separated.
- ferromanganese ore /
- hydrogen based mineral phase transformation /
- magnetic separation /
- separation of manganese and iron /
- suspension magnetization roasting

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References

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