One step sintering of homogenized bauxite raw material and kinetic study |
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| Authors: | Chang-he Gao Peng Jiang Yong Li Jia-lin Sun Jun-jie Zhang Huan-ying Yang |
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| Affiliation: | 1. School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;Gongyi Tongda Zhongyuan Refractory Technology Co., Ltd., Gongyi 451261, China;2. School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;3. Gongyi Tongda Zhongyuan Refractory Technology Co., Ltd., Gongyi 451261, China |
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| Abstract: | A one-step sintering process of bauxite raw material from direct mining was completed, and the kinetics of this process was analyzed thoroughly. The results show that the sintering kinetics of bauxite raw material exhibits the liquid-phase sintering behavior. A small portion of impurities existed in the raw material act as a liquid phase. After X-ray diffraction analyses, scanning electron microscopy observations, and kinetics calculations, sintering temperature and heating duration were determined as the two major factors contributing to the sintering process and densification of bauxite ore. An elevated heating temperature and longer duration favor the densification process. The major obstacle for the densification of bauxite material is attributed to the formation of the enclosed blowhole during liquid-phase sintering. |
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| Keywords: | bauxite refractory materials liquid phase sintering sintering kinetic studies |
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