2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 5: Starkey Intl. Symp. / Mineral Processing
| Editors: | Kongoli F, Kumar P, Senchenko A, Klein B, Silva A.C., Sun C, Mingan W |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2016 |
| Pages: | 270 pages |
| ISBN: | 978-1-987820-44-7 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Desulfurization of high-sulfur bauxite in China
Jianguo Yin1; Nengyun Deng2; Xuejiao Zhou2; Xiang Xiaoyan1; xiaoli yuan3; Xia Wentang1;1, Chongqing, China; 2CHONGQING UNIVERSITY OF SCIENCE & TECHNOLOGY, Chongqing, China; 3, chongqing, China;
Type of Paper: Regular
Id Paper: 150
Topic: 5
Abstract:
Bauxite supply has been a bottleneck problem with mass production of Chinese alumina industry in the decades, so nontraditional ore such as high-sulfur bauxite is being paid more and more attention. There is more than 0.56 billion tons of the ore in China, and the reserve is still increasing with further exploration. Yet the ore is seldom adopted or often abandoned because of the negative effect of the sulfur impurity on alumina production, so it is necessary to study on the desulfurization of high-sulfur bauxite to relax the shortage of bauxite supply in China. In this paper, current desulfurization methods were reviewed and future development trend was also predicted. Taking alumina production as a reference, current desulfurization methods of high-sulfur bauxite were divided into two groups. One was pretreatment desulfurization, and the other was process desulfurization. For roasting pretreatment of desulfurization, its technical economic effect should be reevaluated, and it might be a promising method of treating high-sulfur bauxite with organic and / or goethite impurities. For process desulfurization, if certain sulfur impurity in the sodium aluminate liquors was made to rapid and centralized precipitate before the seeded precipitation process, it would be very meaningful for the Bayer process to treat high-sulfur bauxite.