改性拜耳法赤泥制备高纯度聚合氯化铝  

Use the Modified Red Mud Made from Bayer Process to Prepare Extremely High Pure Ployaluminum Chloride

作　　者：孟铁宏[1] 朱云勤[1] 胡兆平 李令[1] 

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550025 [2]贵州平坝宏大铝化工有限公司,贵州平坝561108

出　　处：《环保科技》2009年第4期23-26,共4页Environmental Protection and Technology

基　　金：贵州省重点技术创新项目"赤泥综合利用技术开发";合同号:黔经贸技创[2008]16号

摘　　要：以改性拜耳法赤泥为原料,采用碳酸钠碱溶法溶出改性赤泥中的氧化铝和利用碳酸化分解处理制得高活性酸溶氢氧化铝凝胶,在一定温度条件下,加入到一定量的盐酸溶液中反应制备出高盐基度纯聚合氯化铝。产品质量达到GB 15892—2003《水处理剂聚氯化铝》饮用水处理优等品要求。该工艺为拜耳法赤泥的综合利用开辟了一条新途径。This paper introduced that using the modified bayer red mud as raw materials, leached out aluminum oxide under the sodium carbonate solution, and obtaining highly activated aluminum hydroxide gel with the process of carbon dioxide decomposition. Under specific temperature, put them into hydrochloric acid solution and we can get the pure high - basieity PAC. The product met the requirements of high class of national stand- ard GB 15892 -2003 for drinking water use. This process developed a new way for comprehensive utilization of bayer red mud.

关 键 词：拜耳法赤泥 改性 凝胶法 聚合氯化铝 制备 

分 类 号：X756[环境科学与工程—环境工程]