以PAC为原料合成锂吸附剂的工艺研究  

Study on the Process of Synthesizing Lithium Adsorbent from PAC

作　　者：张文丁 邓小川[1,2] 朱朝梁 樊发英[1,2] 张毅 樊洁[1,2] 史一飞 卿彬菊 ZHANG Wen-ding;DENG Xiao-chuan;ZHU Chao-liang;FAN Fa-ying;ZHANG Yi;FAN Jie;SHI Yi-fei;QING Bin-ju(Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,810008,China;Qinghai Engineering and Technology Research Center of Salt Lake Resources Development,Xining,810008,China;University of Chinese Academy of Sciences,Beijing,100049,China)

机构地区：[1]中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海西宁810008 [2]青海省盐湖资源开发工程技术研究中心,青海西宁810008 [3]中国科学院大学,北京100049

出　　处：《盐湖研究》2019年第4期55-61,共7页Journal of Salt Lake Research

基　　金：国家自然科学基金(21471157);青海省科技厅应用基础研究项目(2017-Zj-726);2015年西部之光A类项目(Y610081035)

摘　　要：研究了聚合氯化铝(PAC)为原料合成锂吸附剂的基本工艺路线,并探究了加料方式、反应物配比、反应温度、反应时间和加料速度等对所合成吸附剂吸附量的影响,研究结果表明配比是影响吸附剂吸附量的最主要因素,得到了最佳合成条件,在此条件下所合成吸附剂对锂离子的吸附容量为6.1 mg/g。推断吸附剂的主要成分为晶态或非晶态的LiCl·2Al(OH)3·nH2O,同时含有Al(OH)3、(CaO)3Al2O3·6H2O及LiCl·H2O等成分。从吸附结果来看,结晶度较差的片状LiCl·2Al(OH)3·nH2O和非晶态的Al(OH)3为主成分的吸附剂吸附性能最好。The basic process route of poly aluminum chloride(PAC) as a raw material for synthesizing lithium adsorbent was studied.The effects of feed mode, reactant ratio, reaction temperature, reaction time and feed rate on the adsorption capacity of the synthesized adsorbent were investigated.The results show that the ratio is the most important factor affecting the adsorption capacity of the adsorbent, and the optimal synthesis conditions are obtained.Under this condition, the adsorption capacity of the synthesized adsorbent for lithium is 6.1 mg/g. It is inferred that the main component of the adsorbent is crystalline or amorphous LiCl·2 Al(OH)3·nH2O, and contains Al(OH)3,(CaO)3Al2O3·6 H2O and LiCl·H2O.From the adsorption results, the best adsorption performance is in the lamellar LiCl·2 Al(OH)3·nH2O and amorphous Al(OH)3 as the main component is the best.

关 键 词：PAC 吸附剂 锂 

分 类 号：TQ424[化学工程]