Enriching Valuable Elements in Tailings Re-Concentration of Bayan Obo Mine by Direct Reduction

Author:

Jiang Yin Ju1,Zhao Zeng Wu1,Xu Zhang Yin1,Li Bao Wei1

Affiliation:

1. Inner Mongolia University of Science and Technology

Abstract

For the re-concentration minerals of RE dressing tailings in Bayan Obo mine, Fe and P compounds were selectively reduced by the methods of coal-based direct reduction in reactionary pot. The metal and slag in sponge iron obtained from reduction was melted and separated. Compared to that in re-concentration minerals, the content of valuable elements oxide in melt-separation slag was enriched to about 2.5 times. Therefore, melt-separation slag can be used as the basic material to extract the valuable elements.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Reference9 articles.

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2. JIANG Yin-jiu; SONG Shao-kai; ZHAO Zeng-wu; LI Bao-wei; XU Zhang-yin,et al. Study on the thermodynamic equilibrium among niobium-bearing slag and molten steel[J]. Journal of Inner Mongolia University of Science and Technology, ,2010,29(3):207-209.

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