| 铝土矿尾矿直接烧成制备陶瓷材料及其力学性能研究 |
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| 引用本文： | 张翱, 闵鑫, 王淇, 房明浩, 陈新义. 铝土矿尾矿直接烧成制备陶瓷材料及其力学性能研究[J]. 矿产保护与利用, 2022, 42(4): 121-127. doi: 10.13779/j.cnki.issn1001-0076.2022.04.014 |
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| 作者姓名： | 张翱 闵鑫 王淇 房明浩 陈新义 |
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| 作者单位： | 中国地质大学(北京)材料科学与工程学院,北京100083;非金属材料和固废资源材料利用北京市重点实验室,北京100083;矿物材料国家专业实验室,北京100083 |
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| 基金项目： | 国家重点研发计划2018YFC1901501 |
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| 摘 要： | 为实现铝土矿尾矿的资源化利用，以铝土矿尾矿为原料，通过直接烧成工艺制备得到刚玉-莫来石基陶瓷材料。该试验主要研究了铝土矿尾矿高温烧成过程中的物相转变行为与形貌变化规律，以及烧成温度对陶瓷力学性能的影响。结果显示，随着烧成温度的升高，样品的物相组成由一水硬铝石、高岭石和伊利石最终转变为刚玉和莫来石等，样品的形貌越来越致密直到形成大量玻璃相，样品的体积密度和抗压强度先变大后减小，当烧成温度为1 100℃时，样品的抗压强度达到最高值225 MPa。
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| 关 键 词： | 铝土矿尾矿 物相转变 陶瓷 体积密度 抗压强度 |
| 收稿时间： | 2022-05-05 |
Study on the Direct Firing of Bauxite Tailings to Prepare Ceramic Materials and Their Mechanical Properties |
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| ZHANG Ao, MIN Xin, WANG Qi, FANG Minghao, CHEN Xinyi. Study on the Direct Firing of Bauxite Tailings to Prepare Ceramic Materials and Their Mechanical Properties[J]. Conservation and Utilization of Mineral Resources, 2022, 42(4): 121-127. doi: 10.13779/j.cnki.issn1001-0076.2022.04.014 |
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| Authors: | ZHANG Ao MIN Xin WANG Qi FANG Minghao CHEN Xinyi |
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| Affiliation: | 1.School of Materials Science and Engineering, China University of Geosciences, Beijing 100083, China;; 2.Beijing Key Laboratory of Utilization of Non-Metallic Materials and Solid Waste Resources, Beijing 100083, China;; 3.National Specialized Laboratory for Mineral Materials, Beijing 100083, China |
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| Abstract: | In order to realize the resource utilization of bauxite tailings, the study used bauxite tailings as raw materials and prepared corundum-mullite-based ceramic materials by direct firing process. This experiment mainly studied the phase transition behavior and morphological change law of bauxite tailings during high-temperature firing, and the influence of firing temperature on the mechanical properties of ceramics. The results showed that with the increase of firing temperature, the physical phase composition of the sample was finally transformed into corundum and mullite, etc. from duralum hydrate, kaolinite and illite, etc. The morphology of the sample became more and more dense until a large number of glass phases were formed, the bulk density and compressive strength of the sample first became larger and then decreased, and when the firing temperature was 1 100℃, the compressive strength of the sample reached the highest value of 225 MPa. |
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| Keywords: | bauxite tailings phase transition ceramics bulk density compressive strength |
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