氧氯化锆生产排放废碱液的脱硅工艺研究  

Silicon Removal Process of Waste Lye Discharged from Production of Zirconium Oxychloride

作　　者：邱才华[1] 吴江[1] 崔玉玲 王雨[2] 宋静[2] 曲景奎[2] Qiu Caihua;Wu Jiang;Cui Yuling;Wang Yu;Song Jing;Qu Jingkui(Jiangxi Kingan Hi-tech Co.,Ltd.,Nanchang 330500;National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]江西晶安高科技股份有限公司,江西南昌330500 [2]湿法冶金清洁生产技术国家工程实验室中国科学院过程工程研究所,北京100190

出　　处：《广东化工》2019年第21期53-55,64,共4页Guangdong Chemical Industry

基　　金：江西省重点研发计划项目(20161BBH80003);国家自然科学青年基金(51704270);中科院重点部署项目(ZDRW-ZS-2018-1)

摘　　要：本文以氧氯化锆生产过程中废碱液为对象,开展脱硅及副产硅酸钙处理工艺研究。研究了加钙量、反应温度、反应时间等对脱硅的影响,最佳脱硅条件为:CaO/SiO2摩尔比为1.22,反应温度90℃,反应时间60 min,在该条件下,得到的脱硅碱液中的硅含量可降低至0.52 g/L,碱液的回收率在90%以上。脱硅副产的硅酸钙经三级水洗、高温煅烧后可制备硅酸钙多孔材料,可用于涂料添加剂或保温建材,实现资源综合利用。In this paper,the process of silicon removal of waste lye and treatment of by-production-calcium silicate was studied.The effects of CaO addition,reaction temperature,reaction time,etc.The optimal conditions were:1.22 for CaO/SiO2 ratio,90℃for temperature,and 60 min for time.Under these condition,the silicon content in the recycled lye liquid was 0.52 g/L,the recovery rate of the lye was more than 90%.By washing and high-temperature calcination process,the porous materials of Calcium silicate can be prepared,which can be used as filler or thermal insulation building materials.

关 键 词：氧氯化锆 废碱液 脱硅 硅酸钙 

分 类 号：TQ171.4[化学工程—玻璃工业]