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赤泥对超轻污泥-赤泥陶粒的性质及其膨胀机理的影响
发表时间：2012-12-31 浏览量：2106 下载量：743
| 全部作者： | 岳东亭，岳钦艳，齐元峰，高宝玉，于慧 |
| 作者单位： | 山东大学环境科学与工程学院 |
| 摘 要： | 以赤泥(red mud, RM)、污泥、粘土(clay)为主要原料制备超轻污泥-赤泥陶粒(ultra-lightweight sludge-red mud ceramics，ULS-RMC)，对RM进行了化学成分、热重分析，确定了3种原料的配比和ULS-RMC的最佳制备工艺；分析了超轻陶粒的物理性质（包括堆积密度、颗粒密度、吸水率和膨胀率）、重金属的析出和微观结构，并探讨了RM添加量对于超轻陶粒膨胀性能的影响。结果表明：对RM的热重分析发现RM具有良好的吸湿性和保水性；RM的化学成分分析表明其具有很好的膨胀性和助熔性；对比分析超轻污泥陶粒和ULS-RMC的性质以及结构差别证实RM对ULS-RMC的膨胀率以及颗粒密度等相关性质有较大影响。 |
| 关 键 词： | 固体废物资源化；赤泥；污泥；超轻陶粒；膨胀机理 |
| Title： | Effects of red mud on properties and bloating mechanism of ultra-lightweight sludge-red ceramics |
| Author： | YUE Dongting, YUE Qinyan, QI Yuanfeng, GAO Baoyu, YU Hui |
| Organization： | School of Environment Science and Engineering, Shandong University |
| Abstract： | In this study, ultra-lightweight sludge-red mud ceramics (ULS-RMC) were produced from red mud (RM), sludge and clay. The chemical components and thermal properties were tested; the ratio of material and the optimum preparation condition were determined; physical properties (including bulk density, grain density, water absorption and expansion ratio), leaching of heavy metals and microstructure of ultra-lightweight ceramics were analyzed. The results indicated that the red mud found had good hygroscopicity and water retentivity through thermal analysis; the red mud demonstrated its good expansibility and flexibility through chemical components analysis. Comparative analysis on the properties and structure of ultra-lightweight sludge ceramics and ULS-RMC confirmed that red mud had great influence on the properties (bloating ratio, grain density and so on) of ULS-RMC. |
| Key words： | resource recovery of solid waste; red mud; sludge; ultra-lightweight ceramics; bloating mechanism |
| 发表期数： | 2012年12月第24期 |
| 引用格式： | 岳东亭，岳钦艳，齐元峰，等. 赤泥对超轻污泥-赤泥陶粒的性质及其膨胀机理的影响[J]. 中国科技论文在线精品论文，2012，5（24）：2339-2345. |
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