Recovery of ferric oxide from bayer red mud by reduction roasting-magnetic separation process

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• 作者：Yanjie Liu 刘艳替/a> ; Kesheng Zuo ; Guang Yang…
• 关键词：red mud ; ferric oxide ; reduction roasting ; magnetic separation
• 刊名：Journal of Wuhan University of Technology--Materials Science Edition
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：31
• 期：2
• 页码：404-407
• 全文大小：837 KB
• 参考文献：[1]Paramguru RK, Rath PC, Misra VN. Trends in Red Mud Utilization a Review [J]. Mineral Processing and Extractive Metallurgy Review, 2005, 26(1): 129–131
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• 作者单位：Yanjie Liu 刘艳杰 (1)
  Kesheng Zuo (1)
  Guang Yang (2)
  Zhe Shang (1)
  Jianbin Zhang (3)
  
  1. School of Earth Science and Resources, Chang’an University, Xi’an, 710054, China
  2. Hubei Academy of Environmental Sciences, Wuhan, 430072, China
  3. Sanmenxia Mining Development Center, Sanmenxia, 472000, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Materials Science
  Chinese Library of Science
  
• 出版者：Wuhan University, co-published with Springer
• ISSN：1993-0437

文摘

A great amount of red mud generated from alumina production by Bayer process was considered as a low-grade iron ore with a grade of 5wt% to 30wt% iron. We adopted the reduction roastingmagnetic separation process to recover ferric oxide from red mud. The red mud samples were processed by reduction roasting, grinding and magnetic separating respectively. The effects of different parameters on the recovery rate of iron were studied in detail. The optimum techqical parameters were proposed with 700 °C roasting for 20 min, as 50wt% carbon and 4wt% additive were added. The experimental results indicated that the iron recovery and the grade of total iron were 91% and 60%, respectively. A novel process is applicable to recover ferric oxide from the red mud waste fines.