Effects of aluminum on the carbothermic reduction of vanadium-titanium magnetite concentrate and melting separation

doi:10.11835/j.issn.1000-582X.2019.10.008

Home > Archive>Volume 42, Issue 10, 2019 >65-72. DOI:10.11835/j.issn.1000-582X.2019.10.008

Effects of aluminum on the carbothermic reduction of vanadium-titanium magnetite concentrate and melting separation
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                        10.11835/j.issn.1000-582X.2019.10.008
                    
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                        LI JieLI Jie
Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming University of Science and Technology, Kunming 650093, P. R. China
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KOU LuyaoKOU Luyao
Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming University of Science and Technology, Kunming 650093, P. R. China
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YANG LiYANG Li
Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming University of Science and Technology, Kunming 650093, P. R. China
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HU TuHU Tu
Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming University of Science and Technology, Kunming 650093, P. R. China
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ZHANG ZimuZHANG Zimu
Key Laboratory for Ecological Metallurgy of Multimetallic Mineral Under the Ministry of Education, Northeastern University, Shenyang 110819, P. R. China
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Abstract:

The effect of aluminum powder on the carbothermal reduction process of vanadium-titanium magnetite concentrate was studied. The results show that the addition of aluminum powder can promote the rate of carbothermic reduction of vanadium-titanium magnetite concentrate. During the reduction process, aluminum powder replaces carbon as a reductant to participate in the reduction reaction, which releases a large amount of heat to cause local high temperature around it, thereby promoting the progress of the carbothermic reduction reaction and promoting the accumulation of new metal iron. The addition of 1% aluminum powder can slightly improve the separation of slag and metal; when the amount of aluminum powder added is more than 2%, the fluidity of the slag becomes difficult due to the formation of TiC, and the separation effect of slag and metal is deteriorated.

Key words:vanadium-titanium magnetite concentrate;carbon-bearing pellets;carbothermic reduction;aluminothermic enhancement

Reference

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李杰,寇璐垚,杨黎,胡途,张子木.铝粉对钒钛磁铁精矿碳热还原及熔分过程的影响[J].重庆大学学报,2019,42(10):65~72

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Received:May 02,2019
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