【摘要】：以2-乙基-1,3-己二醇和異丁醇按照一定體積比組成混合萃取劑、航空煤油為稀釋劑,萃取某硫酸鹽型鹽湖濃縮鹵水中的硼。對(duì)萃取劑濃度、濃縮鹵水pH、萃取相比、萃取溫度、萃取時(shí)間、飽和萃取容量和反萃劑濃度、反萃相比等進(jìn)行了實(shí)驗(yàn)研究。結(jié)果表明:2-乙基-1,3-己二醇、異丁醇和航空煤油體積比為1∶2∶3,鹵水pH為3,萃取相比為1∶1,溫度為20℃,萃取時(shí)間為5 min;將得到的富硼有機(jī)相用0.25 mol/L氫氧化鈉溶液進(jìn)行反萃,反萃相比為1∶2、溫度為30℃、反萃取時(shí)間為15 min。經(jīng)三級(jí)萃取及反萃,鹵水中硼質(zhì)量濃度降為0.8 mg/L,硼萃取率為99.99%,反萃率為99.78%,硼回收率為99.77%,萃取效果好。
[Abstract]:A mixed extractant composed of 2-ethyl-1,3-hexanediol and isobutanol in a certain volume ratio and aviation kerosene as diluent was used to extract boron from brine in a sulfate-type salt lake. The extraction agent concentration, pH, extraction ratio of concentrated brine, extraction temperature, extraction time, saturation extraction capacity, stripping agent concentration and stripping ratio were studied experimentally. The results showed that the volume ratio of 2-ethyl-1,3-hexanediol, isobutanol and aviation kerosene was 1? 2? 3, the pH of brine was 3, the extraction ratio was 1? 1, the temperature was 20 鈩，

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