Journal of Northeastern University ›› 2010, Vol. 31 ›› Issue (6): 886-889.DOI: -

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Testing investigation on the reduction/magnetic separation of oxide ore from Bayan Obo

Gao, Peng (1); Han, Yue-Xin (1); Li, Yan-Jun (1); Sun, Yong-Sheng (1)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China
  • Received:2013-06-20 Revised:2013-06-20 Online:2010-06-15 Published:2013-06-20
  • Contact: Gao, P.
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Abstract: The reduced oxide ore from Bayan Obo with high metallization rate was obtained via a high-efficiency reduction process, then the efficient concentrations of such metal elements as Fe, Nb and RE were implemented. The reduced ore with metallization rate up to 94.48% was obtained by optimizing the operation parameters in tests such as reducing temperature/time and carbon ratio, and, after stepped grinding and grain-size separation, the Fe grade 91.61%, metallization rate 93.79% and Fe recovery rate 93.23% were obtained as the starting material for steel-making. In the tailings the REO is 12.25% with recovery rate 98.73%, i.e. available to be the raw material for RE beneficiation.

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