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Minerals 2017, 7(1), 10; https://doi.org/10.3390/min7010010

Improvement of Sodium Leaching Ratio of Ferric Bauxite Sinter after Direct Reduction

1
State Key Laboratory of High-Efficient Mining and Safety of Metal Mines (USTB), Ministry of Education, Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China
2
State Key Laboratory of Mineral Processing Science and Technology, Beijing General Research Institute of Mining and Metallurgy, Beijing 100070, China
3
Industrial Research Department, China Noferrous Metals Industry Association Recycling Metal Branch, Beijing 100037, China
*
Author to whom correspondence should be addressed.
Academic Editor: Saeed Chehreh Chelgani
Received: 6 November 2016 / Revised: 10 December 2016 / Accepted: 21 December 2016 / Published: 18 January 2017
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Abstract

The sodium leaching ratio (ηN) of ferric bauxite direct reduction process is much lower than that of ordinary bauxite; thus, the former consumes more sodium than the latter. ηN can be promoted by increasing the dosage of sodium or restricted by increasing the heating temperature and time. However, the restriction effect of heating temperature is 16.67 times larger than that of heating time, and the restriction effect decreases 47.03 times faster when heating temperature increases than that process of heating time. These imply that ηN improves with the increasing sodium carbonate dosage and the decreasing heating temperature. View Full-Text
Keywords: ferric bauxite; leaching; direct reduction; sodium ferric bauxite; leaching; direct reduction; sodium
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Hu, W.; Liu, X.; Wang, H.; Dai, X.; Pan, D.; Li, J.; Sun, C.; Xia, H.; Wang, B. Improvement of Sodium Leaching Ratio of Ferric Bauxite Sinter after Direct Reduction. Minerals 2017, 7, 10.

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