One step sintering of homogenized bauxite raw material and kinetic study
| Autor: | Chang-he Gao, Yong Li, Jialin Sun, Huan-ying Yang, Peng Jiang, Zhang Junjie |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Scanning electron microscope Kinetics Sintering 02 engineering and technology engineering.material Raw material 020501 mining & metallurgy law.invention Magazine Geochemistry and Petrology law Impurity Materials Chemistry Blowhole (geology) geography geography.geographical_feature_category Mechanical Engineering Metallurgy Metals and Alloys 021001 nanoscience & nanotechnology Bauxite 0205 materials engineering Mechanics of Materials engineering 0210 nano-technology |
| Zdroj: | International Journal of Minerals, Metallurgy, and Materials. 23:1231-1238 |
| ISSN: | 1869-103X 1674-4799 |
| DOI: | 10.1007/s12613-016-1343-8 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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