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ECHEVARRIA ARTECHE
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ECHEVARRIA ARTECHE
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Priority to ES397582ApriorityCriticalpatent/ES397582A1/en
Publication of ES397582A1publicationCriticalpatent/ES397582A1/en
Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals
(AREA)
Abstract
Process for obtaining alumina from alunite, characterized in that the alunite is roasted and activated in the oven at a temperature between 500 and 900ºC to proceed, after a fine grinding, to treat it with sulfuric acid for a short period of time and at a temperature of boiling, then making the separation of sterile and leaving a liquid from which, by cooling, potassium alum and ammonium are obtained, which are purified by crystallization and washing. (Machine-translation by Google Translate, not legally binding)
ES397582A1971-12-011971-12-01Procedure to obtain alumina from alunitas. (Machine-translation by Google Translate, not legally binding)
ExpiredES397582A1
(en)
Procedure for the manufacture of fertilizers from waste liquors in an acid treatment of aluminum production. (Machine-translation by Google Translate, not legally binding)
Procedure for the cold extraction of tartaric and potassic acid, like pure nitrate, of tartaric materials not calcinated (Machine-translation by Google Translate, not legally binding)
Procedure for the obtaining of pure alumina, from solid-aluminum minerals or of strongly silicose bauxitas (Machine-translation by Google Translate, not legally binding)