Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Investigation on purification of α-Fe2O3 from zinc smelting iron slag by superconducting HGMS technology

  • Zhang, Peng (School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing) ;
  • Li, Su-qin (School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing) ;
  • Guo, Zi-jie (School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing) ;
  • Zhang, Chang-quan (School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing) ;
  • Yang, Chang-qiao (School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing) ;
  • Han, Shuai-shuai (School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing)
  • Published : 2018.06.30
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Abstract

Comprehensive utilization of zinc smelting iron slag not only solves environmental problems but also creates huge economic benefits. This study was conducted on the enrichment and recovery of ${\alpha}-Fe_2O_3$ from zinc smelting iron slag by superconducting HGMS technology. Several variables such as slurry flow velocity, slag concentration, magnetic field intensity and the amount of dispersing agent were tested in magnetic separation. In the experiments, obtained optimal magnetic separation parameters were 1.60 T of magnetic flux intensity, 600 mL/min of slurry flow velocity of, 15 g/L of slag concentration of, 0.10 g/L of dispersing agent. Under this condition, the content of ${\alpha}-Fe_2O_3$ was increased from 86.22% to 94.39% that can approach the Chinese national standard requirements (A level) of iron oxide red. It was concluded that using superconducting HGMS technology was an effective method for the purification of ${\alpha}-Fe_2O_3$ from zinc smelting iron slag.

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References

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