对含有丰富的锂、钾、铷、铯等有价元素的锂云母矿用石灰烧结法或氯化焙烧法提取锂盐以后,钾、铷、铯均在母液中富集,综合回收铷铯,不仅可进一步降低锂盐生产成本,而且为促进铷、铯在国民经济中的广泛应用创造了有利的条件。 国外生产铷铯盐类,大多数采用复盐沉淀法,如氯锡酸法、亚铁氰化锌法等。这类方法一般流程复杂冗长,分离效果差,产品纯度不高,收率低,生产成本高。近年来,也有采用离子交换法如AMP离子交换与斜 Potassium, rubidium and cesium are all enriched in the mother liquid after the lithium salt is extracted by liming or chlorination roasting method for the lepidolite rich in lithium, potassium, rubidium, cesium and other lepidolite, and the rubidium cesium is comprehensively recovered, Not only can further reduce the lithium salt production costs, but also to promote the rubidium, cesium in the national economy has created favorable conditions for a wide range of applications. Foreign production of rubidium cesium salts, most of the use of double salt precipitation method, such as chloride stannous acid method, such as zinc ferrocyanide. The general complexity of this type of process lengthy, poor separation, product purity is not high, low yield, high production costs. In recent years, there are also ion exchange methods such as AMP ion exchange and oblique