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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    Research on the phase transformation in calcification - carbonation method for low-grade bauxite utilization

    Lv Guozhi1; Tingan Zhang1; Chaozhen Zheng2; Zhu Xiaofeng1; Weiguang Zhang3; Yanxiu Wang3; Liqun Xie2;
    1NORTHEASTERN UNIVERSITY,CHINA, Shenyang, China; 2NORTHEASTERN UNIVERSITY, shenyang, China; 3NORTHEASTERN UNIVERSITY, Shenyang, China;
    Type of Paper: Regular
    Id Paper: 95
    Topic: 37

    Abstract:

    Synthesis and decomposition of hydrogarnet are the main reactions of "Calcification-Carbonization Method", and the saturation coefficient of Si affects the alumina recovery efficiency significantly. This research mainly focuses on the phase transformation performance in the new method. The experiment results indicated that: Al, Si transformed into hydrogarnet with a different saturated coefficient at 180ˇć and 245ˇć through calcification treatment, and silicon phase changed into 2CaO•SiO2 through carbonization treatment. The effect of saturation coefficient of Si in hydrogarnet product on the "Calcification-Carbonization" process is discussed with thermodynamic analysis and experiment as well.

    References:

    [1] CHEN Wankun, PENG Guancai, Intensified Digestion Technology of Bauxite[M]. Beijing: China Metallurgy Industry Press，1998：112-116.(In Chinese)
    [2] YANG Zhongyu. Alumina productim technology[M]. Beijing: Metallurgical industry press，1998：112116.(In Chinese)
    [3] WANG Yiyong, ZHANG Ting-an, CHEN Xia, BAO Li. Effects of Microwave Roasting on Leaching Behavior of Diaspore Ore[J]. The Chinese Journal of Process Engineering，2007，(2)：317-321. (In Chinese)
    [4] LI Xinhua, GU Songqing, YIN Zhonglin, WU Guobao, ZHAI Yuchun. Regulating the digestion of high silica bauxite with calcium ferrite addition[J]. Hydrometallurgy，2010，104(2)：313-316.
    [5] ZHANG Ting-an, LV Guozhi, LIU Yan, et al. Carbonization-calcification transformation method for alumina production [P]. China, 201110275013.6.
    [6] ZHANG Ting-an, LV Guozhi, LIU Yan, et al. A disposal method of Bayer red mud [P]. China, 201110275030.X.

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    Cite this article as:

    Guozhi L, Zhang T, Zheng C, Xiaofeng Z, Zhang W, Wang Y, Xie L. Research on the phase transformation in calcification - carbonation method for low-grade bauxite utilization. In: Kongoli F, Feng N, Polyakov P, Gaune-Escard M, editors. Sustainable Industrial Processing Summit SIPS 2016 Volume 3: Oye Intl. Symp. / Ionic Liquid and Aluminum. Volume 3. Montreal(Canada): FLOGEN Star Outreach. 2016. p. 137-144.