硫酸锌溶液萃取去除氯离子的研究

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%。

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

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.