METHOD FOR PRODUCTION OF CERAMIC PRODUCTS BASED ON WOLLASTONITE Russian patent published in 2009 - IPC C04B33/28 C04B35/16 

FIELD: construction.

SUBSTANCE: method includes preparation of aqueous slip by means of simultaneous crushing of natural wollastonite, kaolin, clay with addition of water, liquid glass and soda ash, at the following ratio of components in slip, wt %: wollastonite 75-80, kaolin 12-15, clay 8-10, liquid glass and soda ash (introduced in slip as stabilisers) 0.3 and 0.2 accordingly, at slip humidity of 29-30 wt %, moulding of products by slip casting into porous molds, drying and baking. Slip additionally contains foamed vermiculite with grain composition of 0.6-2.5 mm in amount of 2.0-3.0% from slip weight.

EFFECT: reduced duration of technological cycle of large and complex profile products making on the basis of natural wollastonite, expanded assortment of wollastonite products for aluminium industry that have increased heat resistance of chemical stability to aluminium melts and reduced heat conductivity.

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