1. Study on Recovering Iron from Shandong Red Mud Based on Gas Reduction Reaction
- Author
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Ding Guo Huang, Yu Min Wu, Jian Guo Liao, Xing Wu Hou, Ning Bo Li, and Yan Yang Gao
- Subjects
Reducing agent ,Chemistry ,Metallurgy ,General Engineering ,Magnetic separation ,Raw material ,Redox ,Red mud ,Roasting - Abstract
Based on Shandong Renping Bayer red mud as the raw material, analyzing its basic characteristics, the result is that the content of total iron in red mud is 29.55%. Gas-based high-temperature direct reduction experiments are made by using a gas mixture of CO and H2O as a reducing agent. And then the reduction effect was investigated by magnetic separation experiments, to realize that separation of iron minerals from red mud. The results show that the consequent of the magnetic separation is improved obviously with the temperature rising. Under these conditions, namely, the roasting temperature being 1050°C, the roasting time lasting 90 minutes, the reduction gas rate being 0.7 m3/min, the magnetic field being 2.2A, and three magnetic separations, the iron recovery ratio in red mud is over 97%. more...
- Published
- 2015
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