Process for removing iron from kaolin, quartz and other mineral concentrates of industrial interest

A chemical process is described for removing ferric iron present in submarginal quantities in concentrates of kaolin, quartz, titanium minerals, ceramic minerals for glass, paper and electronics use and other materials of industrial interest by which ferric iron is reduced to ferrous iron using acid...

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Bibliographic Details
Main Authors PASSARIELLO, BRUNO, PAPONETTI, BRUNO, MARABINI, ANNA MARIA, TORO, LUIGI
Format Patent
LanguageEnglish
French
German
Published 15.04.1992
Subjects
ADHESIVES
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
DYES
LIME, MAGNESIA
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
PREPARATION OF CARBON BLACK
REFRACTORIES
SLAG
TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
TREATMENT OF NATURAL STONE
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Summary:A chemical process is described for removing ferric iron present in submarginal quantities in concentrates of kaolin, quartz, titanium minerals, ceramic minerals for glass, paper and electronics use and other materials of industrial interest by which ferric iron is reduced to ferrous iron using acid solutions, possibly in the presence of low concentrations of sugars containing 5 or more carbon atoms.
Bibliography:Application Number: EP19910116693