METHOD OF PRODUCING CORDIERITE MIXTURE FOR TECHNICAL CERAMICS Russian patent published in 2014 - IPC C04B35/195 C04B35/626 

FIELD: chemistry.

SUBSTANCE: cordierite mixture can be used to produce insulators, supports for catalysts for cleaning internal combustion engine exhaust gases, in water filters, ceramic articles for calcining furnaces etc. In the disclosed method, the sillimanite mineral used is an enriched sillimanite concentrate containing 10-15 wt % quartz, which is mixed with talc in ratio of 1:(0.7-0.9) wt %. The obtained raw mixture is ground and activated in a flow-type centrifugal disc mill, which provides mechanical action on the mixture with a centrifugal force of 50-60 g, and dwell time of the mixture in the treatment zone of 2-5 minutes. The raw mixture treated in the mill is calcined at temperature of 1200-1300°C for 1-2 hours.

EFFECT: obtaining a cordierite mixture for producing ceramics from readily available raw material using a cheaper method.

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