废铝液制备水合硅酸铝及其表面修饰  

Preparation and Surface Modification of Hydrated Aluminum Silicate from Aluminum Bearing Waste

作　　者：李辽沙[1] 李洪花[1] 王梅[1] 董元篪[1] 

机构地区：[1]安徽工业大学安徽省冶金工程与资源综合利用重点实验室,安徽马鞍山243002

出　　处：《有色冶金设计与研究》2007年第2期251-254,261,共5页Nonferrous Metals Engineering & Research

基　　金：安徽省自然科学基金项目(050450105)

摘　　要：本研究以工业废铝液作为原料,通过反应合成、老化、洗涤、表面修饰等步骤,制备出水合硅酸铝,对差热、SEM等样品进行了化学分析,得出:修饰后样品粒子可达到纳米量级,各项指标均符合通用企业标准要求;加入Tween-80后,其以吸附形式附在硅酸铝颗粒表面,从而起到修饰作用;本体系中硅酸铝的生长过程分为四个阶段,分别受不同工艺条件的控制。A new way for preparation of hydrated aluminum silicate from aluminum bearing waste was presented in this research. The product was prepared through reaction, aging, washing, surface modification, etc. and examined by compositional analysis, TG-DTA, SEM and so on. The results showed that the powder scale can achieve nanometer and the product conforms to the general enterprise standard of China. Tween-80 modified the aluminum silicate in the way of attaching on the surface of particles in adsorption mode. Four steps are contained in the growth process of aluminum silicate in this system,and they are controlled by different conditions respectively.

关 键 词：水合硅酸铝 废铝液 制备 表面修饰 

分 类 号：TQ133.1[化学工程—无机化工]