2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 3: Oye Intl. Symp. / Ionic Liquid and Aluminum
| Editors: | Kongoli F, Feng N, Polyakov P, Gaune-Escard M |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2016 |
| Pages: | 180 pages |
| ISBN: | 978-1-987820-40-9 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Calcified Transformation of Iron and Titanium in the Calcification - Carbonization Process for Alumina Production
Yanxiu Wang1; Tingan Zhang2; Lv Guozhi2; Yimin Fu1; Zhu Xiaofeng2; Weiguang Zhang1;1NORTHEASTERN UNIVERSITY, Shenyang, China; 2NORTHEASTERN UNIVERSITY,CHINA, Shenyang, China;
Type of Paper: Regular
Id Paper: 96
Topic: 37
Abstract:
With the continuous consumption of high quality bauxite, the high-iron and high-titanium bauxite which is more difficult to dispose has to be used for alumina production gradually. Iron and titanium are both disadvantageous factors in the Bayer process which may have some impact on the alumina production in the calcification-carbonization process, especially in the calcification process. In this paper, the calcified transformation of iron and titanium in the calcification-carbonization process was investigated separately. The experimental results show that the additive Fe(OH)3 converts to Fe-containing hydrogarnet with the increase of temperature. Fe(OH)3 reacts more readily than Fe2O3 and promote the conversion of Fe-containing hydrogarnet. The additive TiO2 firstly transform to Ca3TiSi2(Al2Si0.5Ti0.5)O14 and then CaTiO3 with the elevated temperatures.
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