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Minera Figueras S A
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Minera Figueras S A
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Priority to ES0237376ApriorityCriticalpatent/ES237376A1/en
Publication of ES237376A1publicationCriticalpatent/ES237376A1/en
A process for obtaining pure iron from iron ore, consisting essentially of subjecting the iron ore, of maximum purity, possible, to a thermal treatment, if necessary, with sadistic carbonate or caustic soda in which they are eliminated a part of the impurities that the mineral contains, such as silica, sulfur, alumina and other analogous substances. Next, and in a second phase, this already treated mineral is reduced with carbon oxide at a temperature of 800º, previously purifying the carbon oxide with lime or elevated soda at a temperature to eliminate the impurities of gaseous acids that may accompany it. said gas. (Machine-translation by Google Translate, not legally binding)
ES0237376A1957-08-281957-08-28A procedure for obtaining pure iron from iron mineral (Machine-translation by Google Translate, not legally binding)
ExpiredES237376A1
(en)
Procedure for obtaining alumina from alternative matters containing alumina or silicy acids (Machine-translation by Google Translate, not legally binding)