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Application filed by Петр Георгиевич ДульневfiledCriticalПетр Георгиевич Дульнев
Publication of UA41069UpublicationCriticalpatent/UA41069U/en
A method for phosphogypsum processing with obtaining of ammonium sulphate, calcium chloride and sulphuric acid comprises the followig stages: treatment of phosphogypsum with ammonia and carbon dioxide or ammonium carbonates with obtaining of calcium carbonate and ammonium sulphate; obtaining of sulphur dioxide gas, which is mixed with chlorine, and reaction product is hydrolyzed with obtaining of hydrogen chloride and sulphuric acid; treatment of calcium carbonate with hydrogen chloride with obtaining of calcium chloride and carbon dioxide, which is returned to the preceding process.
UAA200712573U2007-11-132007-11-13Bem-10 method for phosphogypsum processing
UA41069U
(en)
Method for the production of lithium carbonate comprising adding ammonia to an aqueous solution containing lithium chloride; adding carbon dioxide gas to the resulting ammoniated aqueous solution and recovering the solid produced.