改性高岭土对扎布耶盐湖卤水中锂的吸附性能研究  

Adsorption of Lithium by Modified Kaolin in Zabuye Salt Lake Brine

作　　者：李霞[1] 邓昭平[1] 李晶[1] Li Xia Deng Zhaoping Li Jing(College of Materials and Chemistry ＆ Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China)

机构地区：[1]成都理工大学材料与化学化工学院,四川成都610059

出　　处：《广东化工》2016年第21期24-25,共2页Guangdong Chemical Industry

摘　　要：以高岭土为原料,采用煅烧-酸浸法制备改性高岭土,研究高岭土于不同煅烧温度、盐酸质量浓度、酸浸温度和酸浸时间下制备的改性高岭土对卤水中Li+的吸附性能。最佳工艺条件为:高岭土700℃煅烧1 h,20 wt%HCl 90℃酸浸2.5 h;此时改性高岭土对卤水中锂的吸附量为2.3 mg/g,说明用煅烧-酸浸法制备改性高岭土可以有效的富集卤水中的锂离子。The paper used kaolin as raw material and modified with the methods of calcination and acid-leaching. The adsorption properties of lithium on modified kaolin which prepared at different calcination temperature, acid concentration, leaching temperature and leaching time, The optimum technological conditions were as follows： kaolin calcined at 700℃ for 1h, 20 wt% hydrochloric acid 90℃ acid leaching 2.5 h. At this time, the adsorption capacity of modified kaolin to lithium in brine was 2.3 mg/g, so calcination and acid-leaching treated kaolin can be effectively enriched Li^＋ in brine.

关 键 词：高岭土 改性高岭土 吸附 Li^＋ 

分 类 号：TD98[矿业工程—选矿]