BURNT REFRACTORY CERAMIC PRODUCT Russian patent published in 2011 - IPC C04B35/01 

FIELD: chemistry.

SUBSTANCE: invention relates to a burnt refractory ceramic product. The burnt refractory ceramic product with open porosity of 10-30 vol. %, is made from a mixture which contains finely dispersed refractory material with grain size d₉₀ less than 100 mcm - 50-90 wt %;coarse refractory material with grain size d₉₀ greater than 500 mcm - 10-50 wt %; refractory material with grain size d₉₀ 100-500 mcm up to 10 wt % and a component which forms melt liquid phase at application temperature of up to 1500°C in amount of less than 5 wt %.

EFFECT: high heat resistance, compression strength and low gas-permeability.

13 cl, 3 dwg