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Expired
Application number
GB23198/31A
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Lonza Werke Elektrochemische Fabriken GmbH
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Lonza Werke Elektrochemische Fabriken GmbH
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Publication of GB371259ApublicationCriticalpatent/GB371259A/en
C01F7/16—Preparation of alkaline-earth metal aluminates or magnesium aluminates; Aluminium oxide or hydroxide therefrom
C01F7/18—Aluminium oxide or hydroxide from alkaline earth metal aluminates
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Chemical & Material Sciences
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Organic Chemistry
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Life Sciences & Earth Sciences
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Geology
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Inorganic Chemistry
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Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals
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Abstract
A method of carrying out the process of the parent Specification comprises digesting an alkaline-earth aluminate with less than the theoretical amount of acid such as nitric acid for the formation of neutral salts. Thereby a part of the aluminate is first decomposed to give a normal aluminium salt, whereafter the remainder of the aluminate reacts with the normal salt to give a solution containing a basic aluminium salt, from which alumina is precipitated in known manner.
GB23198/31A1930-08-211931-08-18Improvements in the production of alumina
ExpiredGB371259A
(en)