TFT-LCD工艺废渣制备氟化铝的工艺研究  

Study on Preparation of aluminum fluoride from waste residue of TFT-LCD process

作　　者：郭辰雨 王伦 肖杰 肖辉丽 何晓强(指导)[1] GUO Chenyu;WANG Lun;XIAO Jie;XIAO Huili;HE Xiaoqiang(Institute of Chemical and Pharmacy,JingchuUniversity of Technology,Jingmen 448000,China)

机构地区：[1]荆楚理工学院化工与药学院,湖北荆门448000

出　　处：《江西化工》2022年第2期83-84,共2页Jiangxi Chemical Industry

基　　金：大学生创新创业训练计划项目(省级S202011336025)。

摘　　要：本实验采用固废氟硅酸钠作为原材料,分两步制备氟化铝。并研究第一步反应中的氟硅酸钠和碳酸铵反应的原料配比;以及第二步反应的结晶温度和结晶时间等因素对产品收率的影响。通过实验得出,制备氟化铝最优条件为:第一步反应的原料配比1:3(mol),反应温度90℃,反应时间1.5 h;第二步反应的结晶时间为5h,结晶温度为90℃。经测定氟化铝产品的含量满足国家一级标准。In this experiment,solid waste sodium fluosilicate was used as raw material to prepare aluminum fluoride in two steps.The raw material ratio of sodium fluosilicate and ammonium carbonate in the first step was studied;And the effects of crystallization temperature and crystallization time on the yield of the product.The optimum conditions for the preparation of aluminum fluoride are as follows:the ratio of raw materials in the first step(mol)is 1:3,the reaction temperature is 90℃,and the reaction time is 1.5h;The crystallization time of the second step reaction is 5h and the crystallization temperature is 90℃.After determination,the content of aluminum fluoride products meets the national first-class standard.

关 键 词：氟硅酸钠 氟化铝 工艺研究 

分 类 号：TQ133.1[化学工程—无机化工]