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Kinetics of Simultaneous Reduction of Iron and Manganese Oxides During Reduction of High-Iron Manganese Oxide Ore
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Hanquan ZHANG, Fan YANG, Xin XU, Manman LU
Mining and Metallurgical Engineering | 2023, 43(1) : 84 - 88
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Mining and Metallurgical Engineering | 2023, 43(1): 84-88
• METALLURGY •
Kinetics of Simultaneous Reduction of Iron and Manganese Oxides During Reduction of High-Iron Manganese Oxide Ore
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Hanquan ZHANG, Fan YANG, Xin XU, Manman LU
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  • School of Resources and Safety Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei, China
Published: 2023-02-01 doi: 10.3969/j.issn.0253-6099.2023.01.019
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Experiments were performed in a tube furnace for reduction roasting of high-iron manganese oxide ore, respectively with gas-based (CO) and pulverized coal as reducing agents. The effects of roasting temperature and roasting time on the simultaneous reduction of manganese and iron oxides therein were investigated. The results show that during the gas-based reduction roasting, the reduction process of Mn2O3 is controlled by chemical reaction, with apparent activation energy of 42.64 kJ/mol. However, the magnetization process of Fe2O3 is controlled by internal diffusion, with apparent activation energy of 21.30 kJ/mol. Compared to coal-based roasting process, Mn2O3 and Fe2O3 are easier to be reduced during the process of gas-based reduction roasting, and the manganese oxides can be directly reduced from Mn2O3 to MnO without the step of being reduced to intermediate product Mn3O4.

manganese oxide ore  /  kinetics  /  limit link  /  reduction roasting  /  activation energy  /  gas-based reduction  /  coal-based reduction
Hanquan ZHANG, Fan YANG, Xin XU, Manman LU. Kinetics of Simultaneous Reduction of Iron and Manganese Oxides During Reduction of High-Iron Manganese Oxide Ore[J]. Mining and Metallurgical Engineering, 2023 , 43 (1) : 84 -88 . DOI: 10.3969/j.issn.0253-6099.2023.01.019
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Year 2023 volume 43 Issue 1
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doi: 10.3969/j.issn.0253-6099.2023.01.019
  • Receive Date：2022-08-19
  • Online Date：2026-03-05
  • Published：2023-02-01
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  • Received：2022-08-19
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    School of Resources and Safety Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei, China
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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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