Optimization test of molybdenum iron smelting from molybdenum waste
YANG Shuang-ping1, LIU Shou-man1, WANG Miao1, ZHANG Tian-tian1, SUN Hai-xing1, HE Kai2
1. School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China; 2. Technical Center, Jinduicheng Molybdenum Industry Co., Ltd., Xi'an 710077, Shaanxi, China
Abstract:Smelting of ferromolybdenum was performed by carbon reduction method using waste calcium molybdate containing molybdenum as raw material. The optimum experimental conditions were obtained by single factor analysis test and orthogonal test optimization. Calcium molybdate addition should be less than 10%, smelting temperature was 1 525 ℃, holding time was 25 min and alkalinity was 1.3. Through XRD, SEM and EDS analysis, it could be concluded that Mo existed in the form of Mo2C, Fe3Mo and Fe3Mo3C in the molybdenum-iron alloy produced by this method. The slag system was a binary glass slag system with a composition system similar to that of ordinary glass. The recovery rate of Mo in alloy was greater than 99%, and recovery benefit of Mo resource was considerable.
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