硫酸锌溶液萃取去除氯离子的研究

Study How to Removal of Chloride ion by Zinc sulfate Solution Extraction

本文以人工配制含氯离子杂质的硫酸锌溶液为原料,研究硫酸锌溶液溶剂萃取脱除氯离子,试验研究得出以下结论:N235对氯的萃取具有良好的选择性,其萃取氯的饱和容量为25.125g/L。在有机相组成为20%N235+20%TBP+60%260#溶剂油、游离硫酸30g/L、相比O/A=1:1、萃取级数3级的条件下,氯的萃取率可达95%以上,最高达为99.02%。以25%氨水溶液为反萃剂,在相比O/A=10:1,混合和静置分层时间均为5分钟的条件下,单级反萃,氯的反萃率可达97.89%。

The paper studies how to remove chloride ion from the prepared solution which contains.Some meaningful conclusions were drawn as follows:Chlorine can be selectively extracted by N235extractant,and saturated capacity of chlorine is 25.125g/L.The extraction ratio of chlorine can reach 95%,the best extraction ratio of chlorine is 99.02%,under the conditions when the organic phase component is 20%N235+20%TBP+60%260#white spirit,Phase ration and extraction grade is 1:1 and 3,respectively.Using 25%concentration of ammonia solution as stripping agent,the stripping ration of chlorine is higher than 97%,when the phase ration(O/A)is 10:1 and single-stage stripping is applied.The mixing time and silent period both are 5 min.