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) |
CD shopping page
Calcification- Carbonation Method for Comprehensive Utilization of Low-grade Bauxite and Bayer Red Mud
Tingan Zhang1; Lv Guozhi1; Weiguang Zhang2; Zhu Xiaofeng1; Liu Yan1; Yanxiu Wang2; Dou Zhihe1; Zhao Qiuyue1;1NORTHEASTERN UNIVERSITY,CHINA, Shenyang, China; 2NORTHEASTERN UNIVERSITY, Shenyang, China;
Type of Paper: Regular
Id Paper: 94
Topic: 37
Abstract:
The low grade bauxite utilization and red mud treatment become to the key problems of Bayer process caused by the balance phase of sodium aluminosilicate. To solve these problems, ¡°Calcification-Carbonation Method¡± was put forward by Northeastern University. The main purpose of this method is to change the balance phase of red mud into 2CaO•SiO2 and CaCO3 with a low energy consumption hydrometallurgical process. Through treatment by ¡°Calcification-Carbonation Method¡±, A/S of the new structure red mud lowered below to 0.5 and the Na content lowered below to 0.3%, the red mud could be used in cement industry directly or planting soil preparation. This paper mainly introduced the technological idea and principle of new method, thermodynamic analysis and typical experiment results are given as well.
Keywords:
Calcification-Carbonation, BauxiteReferences:
[1] CHEN Wan-kun, PENG Guan-cai, Intensified Digestion Technology of Diasporic Bauxite (Bei Jing: Metallurgical Industry Press, Inc., 1998), 112-116.[2] LI Hao, “Study on Sustainable Development of Bauxite Resources Industry of China” (Ph.D. thesis, China University of Geosciences, 2010), 27-35.
[3] CHEN Xuan-zhu, “Thinking on Development Strategy of China Aluminum Industry,” World Nonferrous Metals, 3(2008), 9-13.
[4] GUO Jian, REN Ai-jun, FANG Qi-xue, et al., “A Study on Separation Diaspore and Kaolinite by Reverse Flotation,” Nonferrous Metals, 3(2003), 1-5.
[5] YANG Chong-yu, Technology of Alumina Production (Bei Jing: Metallurgical Industry Press, Inc., 1993), 133-140.
[6] GUO Hui, ZOU Bo-rong, GUAN Xue-mao, et al., “Characteristics and Comprehensive Utilization Status of Red Mud of Bayer Process,” Block-Brick-Tile, 3(2011), 50-53.
[7] WANG Qi, LI Jin, ZHAO Yin, et al., “Study on The Dealkalization of Red Mud by Suspension and Carbonation,” Chinese Journal of Environmental Engineering, 3(2009), 2275-2280.
[8] PAN Lu, “Basic Research on Treating Low-grade Bauxite and Red Mud by Lime-carbonation Process” (Master degree thesis, Northeastern University, 2011), 1-70.