| 摘要: |
| 以赤泥、粉煤灰、石英砂等为主要原材料，经掺加物理泡沫、浇注、煅烧等工艺制备了赤泥轻质保温材料，研究了煅烧温度及升温速率对其性能的影响；利用扫描电子显微镜观察其微观形貌，并探讨其烧结机理.结果表明：在最佳煅烧温度1150℃，最佳升温速率6℃/min条件下制备的赤泥轻质保温材料，其堆积密度为527kg/m3，收缩率为57%，抗压强度和抗折强度分别为34MPa和22MPa，导热系数为0105W/(m·K)，孔隙率（体积分数）为3361%. |
| 关键词: 赤泥 轻质保温材料 煅烧温度 升温速率 |
| DOI：103969/j.issn1007 9629201402007 |
| 分类号: |
| 基金项目:山东省环保研发项目(［2011］139 5) |
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| Study and Preparation of Red Mud Lightweight Thermal Insulation Material |
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JIANG Congcong, LI Guozhong, LI Qijin
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Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials,University of Jinan, Jinan 250022, China
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| Abstract: |
| The lightweight thermal insulation material was prepared with red mud, fly ash and silica sand as the main raw material, by the technology of mixing with physical foam, casting, calcination and so on. The influence of calcined temperature and heating rate on performances of sample was studied, the morphology was observed by scanning electron microscopy(SEM), and the sintering mechanism was explored. The results show that the optimum calcined temperature is 1150℃, the optimum heating rate is 6℃/min. Under the optimum condition, the bulk density is 527kg/m3, the shrinkage is 57%, the compressive strength and flexural strength are 34MPa and 22MPa, the thermal conductivity coefficient is 0105W/(m·K), the porosity is 3361%(by volume). |
| Key words: red mud lightweight thermal insulation material calcination temperature heating rate |
