氢氧化铝制备过程中铝酸钠溶液稳定性研究  

Study on the stability of sodium aluminate solution in the preparation of alumina hydrate

作　　者：任倩 徐婷 张晨 程远志 唐晓婵[1] 岳涛 Ren Qian;Xu Ting;Zhang Chen;Cheng Yuanzhi;Tang Xiaochan;Yue Tao(Qingdao University of Science and Technology,Chemical Technology Academy of Shandong Prorince,Organic Reaction in Aqueous Engineering Research Center of Shandong Province,Jinan 250014,China)

机构地区：[1]青岛科技大学山东化工研究院,山东省水相有机合成及高效清洁分离工程技术研究中心,山东济南250014

出　　处：《轻金属》2022年第12期10-14,共5页Light Metals

摘　　要：铝酸钠溶液主要用于氢氧化铝制备。针对铝酸钠放置一段时间有白色沉淀析出且氢氧化铝粒径大等问题,本文研究铝酸钠溶液苛性比αk、铝酸钠纯化(晶种活性、晶种数量、纯化温度、纯化时间)对铝酸钠稳定性和氢氧化铝的影响。铝酸钠纯化工艺制得高稳定性溶液(静置一年溶液澄清)且合成氢氧化铝粒径减小。Sodium aluminate solution is mainly used for the preparation of alumina hydrate.In order to solve the problems of white precipitation and large particle size of alumina hydrate after sodium aluminate was placed for a period of time,the effects of caustic ratioαk and sodium aluminate purification(seed activity,seed number,purification temperature and purification time)on the stability of sodium aluminate and alumina hydrate were studied.The high stability solution was prepared by sodium aluminate purification process(the solution was clarified after standing for one year)and the particle size of the synthesized alumina hydrate decreased.

关 键 词：铝酸钠溶液 铝酸钠纯化 晶种 铝酸钠溶液稳定性 氢氧化铝粒径 

分 类 号：TF821[冶金工程—有色金属冶金] TQ203.9[化学工程—有机化工]