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ES156787A1
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Apparatus for the integral automatic separation of the magnetic products contained in the iron, industrial waste minerals
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ES156788A1
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Procedure for obtaining copper and other metals from complex minerals
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ES144250A1
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A procedure for the treatment of ferruginous minerals.
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ES146370A1
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A procedure for the treatment of iron-containing minerals.
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ES135606A1
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The process of waste treatment of roasting iron pyrites in view of obtaining a raw material.
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GB190605323A
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Process for the Complete Extraction of Inulin from the Tubercles containing it, with the object of the Commercial Production thereof.
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CA247231A
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Process for extracting sugar from beets
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