High Strength feldspathic porcelain and Method for producing it

摘要

The present Invention relates to feldspathic Porcelain with high strength, resistance to bending, unglazed, over 1400 kg / vcm2,The Porcelain consisting essentially of 22 - 85 Weight percent of SiO (2), 10 (- 73 Weight percent of al (2) o (3) and 1.5-6.5 percent by weight of at least an oxide selected from the group consisting of corundum, Mullite, CRISTOBALITE, Quartz,A total degree of crystallinity of the Crystal Phase increased 40 percent by weightThe degree of crystallization of the Glass is selected in margins of not more than 60 Weight percent to corundum, 5 to 50 Weight percent to Mullite,Not more than 40 Weight percent to CRISTOBALITE and not more than 10 percent in weight for the Quartz Grains, the size of the Crystals is not greater than 20 / um,Porcelain and is free of major defects / 40 um.