Experimental study on smelting reduction of carbon-bearing manganese briquettes in slag bath
Bo Zhang1,2 ? Da-ping Wang1 ? Bin Chen1 ? Zhen-jian Su1 ? Zheng-liang Xue2
1 School of Metallurgical and Material Engineering, Hunan University of Technology, Zhuzhou 412007, Hunan, China 2 The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
Experimental study on smelting reduction of carbon-bearing manganese briquettes in slag bath
Bo Zhang1,2 ? Da-ping Wang1 ? Bin Chen1 ? Zhen-jian Su1 ? Zheng-liang Xue2
1 School of Metallurgical and Material Engineering, Hunan University of Technology, Zhuzhou 412007, Hunan, China 2 The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
ժҪ The reduction of carbon-bearing manganese briquettes in a slag bath was experimentally investigated at temperatures ranging from 1550 to 1650 ��C. Both the internal temperature and the microstructure evolution of the briquettes were analyzed by differential thermal analysis, scanning electron microscopy and energy-dispersive spectrum analysis, and the smelting reduction mechanism of the carbon-bearing manganese briquettes in the slag bath was further elaborated. The results indicated that the smelting reduction of the briquettes in the slag bath could be divided into three stages, and the aggregation and growth of the metallic particles during the reduction were significantly affected by the slag temperature. Under the experimental conditions, the reduction speed at the initial stage of the carbon-bearing manganese briquettes smelting reduction was controlled by the chemical reaction, whereas the reaction speeds at both the middle and following stages were limited by gaseous diffusion.
Abstract��The reduction of carbon-bearing manganese briquettes in a slag bath was experimentally investigated at temperatures ranging from 1550 to 1650 ��C. Both the internal temperature and the microstructure evolution of the briquettes were analyzed by differential thermal analysis, scanning electron microscopy and energy-dispersive spectrum analysis, and the smelting reduction mechanism of the carbon-bearing manganese briquettes in the slag bath was further elaborated. The results indicated that the smelting reduction of the briquettes in the slag bath could be divided into three stages, and the aggregation and growth of the metallic particles during the reduction were significantly affected by the slag temperature. Under the experimental conditions, the reduction speed at the initial stage of the carbon-bearing manganese briquettes smelting reduction was controlled by the chemical reaction, whereas the reaction speeds at both the middle and following stages were limited by gaseous diffusion.
Bo Zhang, ? Da-ping Wang ? Bin Chen ? Zhen-jian Su ? Zheng-liang Xue. Experimental study on smelting reduction of carbon-bearing manganese briquettes in slag bath[J].Journal of Iron and Steel Research International, 2018, 25(4): 417-425.
Bo Zhang, ? Da-ping Wang ? Bin Chen ? Zhen-jian Su ? Zheng-liang Xue. Experimental study on smelting reduction of carbon-bearing manganese briquettes in slag bath. , 2018, 25(4): 417-425.
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