Procedure for the obtaining of pure alumina, from solid-aluminum minerals or of strongly silicose bauxitas (Machine-translation by Google Translate, not legally binding)
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Procedure for the obtaining of alumina via electrolºtica (Machine-translation by Google Translate, not legally binding)
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A perfect procedure for the intensive facility of sulfuric acid (Machine-translation by Google Translate, not legally binding)
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Procedure for the extraction of chrome salts, chromats, bicromatos and pure chrome
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Procedure for the obtaining of concentrated sulfuric acid (oléum) via catalytic
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A perfection in the installations with towers and absorbing deposits for the production of sulfuric acid
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A procedure for the production of alumina, starting from syllic-aluminum matters
