New Extraction System for Lithium from Brine with High Magnesium Content

Lithium is an important element with a wide variety of applications,especially in lithium ion batteries and in the exploration of nuclear energy.Salt lake brine is the most abundant lithium source available in world,comp-rising70%~80%of all known lithium deposits.Lithium can be abstracted from brines with low magnesium content and processed into kinds of lithium compound in Atacama and Hombre Muerto of South America(Nie et al.,2013).

氯酸锂电解液中高氯酸锂的分光光度测定

在氯酸锂电解液中，用硫酸亚铁使氯酸盐还原，当ｐＨ＝３～４时，用苯萃取ＬｉＣｌＯ４灿烂绿络合物，测定了高氯酸锂。在２５ｍＬ萃取液中，ＬｉＣｌＯ４于２～１００μｇ范围内遵守比尔定律。大量Ｎａ＋，Ｋ＋，Ｍｇ２＋，Ｐｂ２＋，Ｍｎ２＋，Ｆｅ３＋，Ｆ－，Ｃｌ－，ＳＯ２－４，ＣＨ３ＣＯＯ－和少量的ＣｒＯ２－４不影响测定。