One step sintering of homogenized bauxite raw material and kinetic study
来源期刊：International Journal of Minerals Metallurgy and Materials2016年第10期
论文作者：Chang-he Gao Peng Jiang Yong Li Jia-lin Sun Jun-jie Zhang Huan-ying Yang
文章页码：1231 - 1238
摘 要：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.
Chang-he Gao1,2，Peng Jiang1，Yong Li1，Jia-lin Sun1，Jun-jie Zhang2，Huan-ying Yang1
1. School of Material Science and Engineering, University of Science and Technology Beijing2. Gongyi Tongda Zhongyuan Refractory Technology Co., Ltd.
摘 要：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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