Process for recovering cesium from cesium alum

Details Process for recovering cesium from cesium alum Process for recovering cesium from cesium alum

1983-07-12

1984-08-21

Straub, Gary P.

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423179, 423184, 423199, 423421, 423600, C01G 4512

Patent

active

044669500

ABSTRACT:
Cesium is recovered from cesium alum, CsAl(SO.sub.4).sub.2, by a two-reaction sequence in which the cesium alum is first dissolved in an aqueous hydroxide solution to form cesium alum hydroxide, CsAl(OH).sub.3, and potassium sulfate, K.sub.2 SO.sub.4. Part of the K.sub.2 SO.sub.4 precipitates and is separated from the supernatant solution. In the second reaction, a water-soluble permanganate, such as potassium permanganate, KMnO.sub.4, is added to the supernatant. This reaction forms a precipitate of cesium permanganate, CsMnO.sub.4. This precipitate may be separated from the residual solution to obtain cesium permanganate of high purity, which can be sold as a product or converted into other cesium compounds.

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