摘要
含氟盐酸是六氟磷酸锂的副产物,氟的脱除是其回收利用的关键。在分析间歇脱氟工艺的问题与不足的基础上,提出了连续脱氟技术。连续脱氟技术明显地改善了脱氟过程的自动化程度、品质、产能及环境等,从而实现了盐酸中氟质量浓度由55 g/L降低至11 g/L,产能提升118%,人均劳动效率提升337%,氟化钙粒度增长约30%,固体废弃物排放量减少52%,尾气达到超低排放标准(氟化物体积质量≤3 mg/m^(3),颗粒物体积质量≤10 mg/m^(3))。
Fluorinated hydrochloric acid is a by-product of lithium hexafluorophosphate,and the removal of fluorine is the key to its recycling.Based on the analysis of the problems and shortcomings of the batch defluoridation process,a continu-ous defluoridation technology was proposed to remove fluorine from fluorinated hydrochloric acid.Continuous defluoridation technology significantly improved the automation,quality,capacity,and environmental management of the defluoridation process.As a result,the fluoride content in HCl was decreased from 55 g/L to 11 g/L,the production capacity was enhanced by 118%,the labor efficiency per capita was improved by 337%,the particle size of calcium fluoride was increased by about 30%,the solid waste emission was reduced by 52%,and the tail gas emission reached the ultra-low emission standard(fluoride content≤3 mg/m^(3) and particulate matter content≤10 mg/m^(3)).
作者
周小平
冯好收
张国辉
侯时磊
张帅鹏
刘利霞
ZHOU Xiaoping;FENG Haoshou;ZHANG Guohui;HOU Shilei;ZHANG Shuaipeng;LIU Lixia(Do-Fluoride New Materials Co.,Ltd.,Jiaozuo 454191,China)
出处
《无机盐工业》
CAS
CSCD
北大核心
2023年第11期93-99,共7页
Inorganic Chemicals Industry
关键词
六氟磷酸锂
含氟盐酸
脱氟技术
回收氟化钙
干化机
lithium hexafluorophosphate
fluorinated hydrochloric acid
defluoridation technology
recycle of calcium fluo-ride
drying machine
