拜耳法赤泥制备地聚物类无机聚合材料的研究进展  

Preparation of Inorganic Geopolymer from Bayer Red Mud

作　　者：刘万超 闫琨 和新忠 张朝普 吴国亮 

机构地区：[1]中国铝业郑州有色金属研究院有限公司,郑州450041 [2]国家铝冶炼工程技术研究中心,郑州450041

出　　处：《硅酸盐通报》2016年第2期453-457,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金项目(51304216)

摘　　要：赤泥是从铝土矿中提取氧化铝后产生的碱性废渣。拜耳法赤泥经活化、解聚溶出、二次聚合等处理,可以制备高性能无机地聚物材料,这为赤泥综合利用难题的解决提供了新的技术思路。本文对赤泥地聚物的合成技术研究现状进行了分析论述。通过对赤泥中主要成分硅渣的结构分析,认为由于生产条件的影响,硅渣不具有聚合物的性能特征,直接使用拜耳法赤泥制备地聚物材料难以获得较高的性能。通过活化处理,易于实现硅渣中铝硅基团的溶出,为二次聚合提供条件。本文认为,赤泥基地聚物材料具有广阔的应用前景,应进一步加强对拜耳法赤泥硅渣活化等理论问题的研究,并探讨地聚物合成过程的强度形成机理。Red mud, or bauxite residue is an alkali waste generated during the extraction of alumina from bauxite. The inorganic geopolymer can be prepared with red mud through activation, dissolution, and re- polymerization, that is a new feasible method to exhausting the residue. The paper analyzed the research status on preparation of geopolymer from red mud. The analysis of the structure results that the disilication products （DSP） have non characters of geopolymer, due to the influence of production condition. As a result, it is difficult to obtain high performance geopolymer from Bayer red mud directly. The activation treatment is positive to the digestion and re-polymerization of A1-Si group. The application of red mud in geopolymer is believed to be prospected in the future. It is necessary to do some theoretical research on the mechanism of the activation of DSP and strength formation of red mud geopolymer.

关 键 词：赤泥 地聚物 硅渣 聚合 

分 类 号：TD985[矿业工程—选矿] O657[理学—分析化学]