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Application filed by Петр Георгиевич ДульневfiledCriticalПетр Георгиевич Дульнев
Priority to UAU200905397UpriorityCriticalpatent/UA63701U/en
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Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals
(AREA)
Abstract
A process for preparation of gypsum in soda production is characterized in that from ammonium chloride solution ammonium chloride concentrate is produced by desalting, which is treated with sulphuric acid in the presence of manganese dioxide with preparation of chlorine and mother solution with sulphate salts of ammonium and manganese. The treatment of them with atmospheric oxygen in alkali medium results in the preparation of manganese dioxide, which is returned to the process. The ammonium sulphate solution is treated with carbonate raw material with returning of ammonia and carbon dioxide to the process and preparation of gypsum.
UAU200905397U2009-05-292009-05-29Process for preparation of gypsum in soda production
UA63701U
(en)
Method of sequestering carbon dioxide produced by a source comprising: a) obtaining a hydroxide salt in an aqueous mixture, b) mixing hydroxide salt with carbon dioxide to form first carbonate salt in first mixture, c) chlorinating mineral silicate from group-2 of hydrochloric acid d) mixing chloride salt with carbonate salt and e) separating said carbonate salt.
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.