Study on Recovering Iron from Shandong Red Mud Based on Gas Reduction Reaction

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%.

• Periodical: Advanced Materials Research (Volumes 1092-1093)
• Pages: 1041-1045
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1092-1093.1041
• Online since: March 2015
• Authors: Xing Wu Hou*, Yu Min Wu, Ding Guo Huang, Yan Yang Gao, Jian Guo Liao, Ning Bo Li
• Keywords: Bayer Red Mud, Gas-Base Reduction, High-Temperature Roasting, Iron, Magnetic Separation

References

[1] Junzheng Lu, Xianjin Yu, Lipeng Zhang: SHANDONG METALLURGY, in China, Vol. 29 (2007), pp.10-12.

[2] The ministerio de comunicaciones and the ministry of science and technology, comprehensive utilization of red mud guidance, in China, (2010).

[3] Mingming Gu, Wei Li: CHINA NONFERROUS METALLURGY, in China, Vol. 4 (2011), pp.49-53.

[4] T sak iridis, P. E. Agatzin i- Leonardou S and Oustadak is P: H azard Mater, Vol. 116 ( 2004), pp.103-110.

[5] Vishwajeet S. Yadav, Murari Prasad, Jeeshan Khan, et al: Journal of Hazardous Materials, Vol. 176(2010), pp.1044-1050.

[6] Shaobin Wang, H.M. Ang, M.O. Tade: Chemosphere, Vol. 72(2008), pp.1621-1635.

[7] A.A.S. Oliveira, I.F. Teixeira, Taís Christofani, et al: Applied Catalysis B Environmental, (2014), pp.144-151.

[8] L. Senff , D. Hotza, J.A. Labrincha: Construction and Building Materials, Vol. 25(2011), pp.163-170.

[9] P.E. Tsakiridis, S. Agatzini-Leonardou, P. Oustadakis: Journal of Hazardous Materials, Vol. 8(2004), pp.103-110.

DOI: 10.1016/j.jhazmat.2004.08.002

[10] Yuan Yao, Yu Li, Xiaoming Liu, et al: Journal of Hazardous Materials, Vol. 47(2013), pp.496-501.

[11] Xiaohong Xu, Wenbo Zhong, Jianfeng Wu et al: GLASS & ENAMEL, in China, Vol. 34(2006), pp.28-31.

[12] Wanchao Liu, Shouyi Sun, Ling Zhang, et al: Minerals Engineering, Vol. 39(2012), pp.213-218.

[13] Yan Jia, Wen Ni, Zhongjie Wang et al: Journal of University of Science and Technology Beijing, in China, Vol. 33(2011), pp.1059-1064.