用于从起始水溶液中获得铯的方法

文档序号:1409304 发布日期:2020-03-06 浏览:39次 >En<

阅读说明:本技术 用于从起始水溶液中获得铯的方法 (Method for obtaining cesium from a starting aqueous solution ) 是由 R.迪茨 J.威廉斯 D.沃尔格穆特 H.伦佩尔 于 2018-07-09 设计创作,主要内容包括:本发明涉及一种用于从铯含量在50ppm至5000ppm范围内的起始水溶液中获得铯的方法,在所述方法中,在第一步骤中,借助于超化学计量量至少1.1倍的量的含有血盐钾的溶液,在2至12的pH范围内并且在10℃至80℃的温度范围内,使所述水溶液中的铯离子以具有二价阳离子的复盐的形式沉淀,其中所述二价阳离子已经以与所述铯含量至少等摩尔的量存在于所述起始溶液中,或者以水溶性盐的形式添加,并且在第二步骤中,将它们通过热分解转化回水溶性形式,并且在第三步骤中,将它们与不溶性残余物分离。(The invention relates to a method for obtaining cesium from a starting aqueous solution having a cesium content in the range from 50ppm to 5000ppm, in which method, in a first step, cesium ions in the aqueous solution are precipitated in the form of a double salt with divalent cations, which have been present in the starting solution in an amount at least equimolar to the cesium content, or are added in the form of a water-soluble salt, by means of a solution containing the potassium salt of blood in an amount of at least 1.1 times the superstoichiometric amount, in the pH range from 2 to 12 and in the temperature range from 10 ℃ to 80 ℃, and in a second step they are converted back into a water-soluble form by thermal decomposition and in a third step they are separated from insoluble residues.)

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