Method of preparing caesium salts from caesium aluminium alum

摘要

PCT No. PCT/EP94/01202 Sec. 371 Date Nov. 24, 1995 Sec. 102(e) Date Nov. 24, 1995 PCT Filed Apr. 19, 1994 PCT Pub. No. WO94/25422 PCT Pub. Date Nov. 10, 1994This invention relates to the preparation of cesium salts from cesium-aluminum-alum in a process in which the cesium-aluminum-alum is reacted in a single vessel in the presence of water with calcium hydroxide in an amount which is equimolar to the amount of aluminum and with a readily water-soluble calcium salt in an amount which is equimolar to the amount of cesium and the precipitated aluminum hydroxide and the precipitated calcium sulfate are separated by filtration or centrifugation.