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

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

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, t...

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Bibliographic Details
Published in:Minerals (Basel) Vol. 7; no. 1; p. 10
Main Authors: Wentao Hu, Xinwei Liu, Huajun Wang, Xiaojie Dai, Dongling Pan, Jia Li, Chuanyao Sun, Hanwen Xia, Bo Wang
Format: Journal Article
Language:English
Published: MDPI AG 01-01-2017
Subjects:
direct reduction
ferric bauxite
leaching
sodium
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Summary: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.
ISSN:2075-163X
DOI:10.3390/min7010010