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专利名称：MANUFACTURE OF CALCIUM SULPHATE发明人：DR. KURT SCHEEL,DR. FRANZ WIRSCHING申请号：AU8151975申请日：19750526公开号：AU8151975A公开日：19761202
摘要：Calcium sulphate produced by reacting crude phosphate with sulphuric acid iswashed with aqueous solutions of condensed and complex aluminium fluorides of thegeneral formulae MeAlF4, Me2AlF5 and Me5Al3F14 as well as AlF3.nH2O, in which Merepresents an alkali metal, ammonium or thallium-I ion and n is a number between 1 and9.
申请人：GEBR, KNAUF WESTDEUTSCHE GIPSWERKE
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