微波催化除铁增白凹凸棒石黏土  

Study on Iron-removing and Bleaching of Attapulgite Clay by Microwave Catalysis

作　　者：王青宁[1] 田静[1] 李澜[1] 李宁[1] 

机构地区：[1]兰州理工大学,甘肃兰州730050

出　　处：《非金属矿》2007年第5期45-48,共4页Non-Metallic Mines

基　　金：甘肃省攻关项目(2GSO47-A52-001-05)

摘　　要：凹凸棒石黏土(凹土)因含有氧化铁或氢氧化铁而显红色,限制了它在石油与化工催化领域的使用。本实验对凹土采取活化、除杂,在酸性介质中采用液相微波催化反应、回流、分离等法,最终得到白色凹土。研究结果表明,这一工艺不仅加快了反应速率,与常规酸化法相比时间缩短近一半,同时铁脱除率最高可达91.2%,白度可达76.4%,反射率达58.6%。Due to most part of attapulgite clay contains iron oxide or iron hydroxide,thus the attapulgite clay has red colour and its application is limited.Taking attapulgite clay from Linze of Gansu province as a sample,it is activated,removed from the impurities and then reacted by microwave liquid phase catalysis in the acidic medium. After separation,circum? uence and at last,the white attapulgite clay is obtained. The results show that this process can not only speed up the reaction velocity and shorten the hal...

关 键 词：凹凸棒石黏土 除铁 微波催化 漂白 

分 类 号：TD985[矿业工程—选矿]