Process of preparing a meta-kaolin white pigment from kaolinite

A method of producing a meta-kaolin white pigment involves thermal treatment of hydrated kaolinite in a fluidised bed reactor, supplied with fuel, oxygen-contg. gas and granular kaolinite of particle size at least 80 wt.% 0.1-3 mm., at 850-950 degrees C to obtain, as withdrawn product, meta-kaolin w...

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Bibliographische Detailangaben
Hauptverfasser: ERNST BAREUTHER, JOCHEN KAUPER, MARTIN RAHN, WERNER STOCKHAUSEN
Format: Patent
Sprache:eng
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Zusammenfassung:A method of producing a meta-kaolin white pigment involves thermal treatment of hydrated kaolinite in a fluidised bed reactor, supplied with fuel, oxygen-contg. gas and granular kaolinite of particle size at least 80 wt.% 0.1-3 mm., at 850-950 degrees C to obtain, as withdrawn product, meta-kaolin white pigment with max. 2 wt.% water of crystallisation.