초록 ▼

The present invention relates to a process of forming ceramic tiles having the appearance of tiles produced from clays. The process includes melting a material to form a glass melt, treating the glass melt to produce a solid glass product, grinding the solid glass product to produce glass particles

The present invention relates to a process of forming ceramic tiles having the appearance of tiles produced from clays. The process includes melting a material to form a glass melt, treating the glass melt to produce a solid glass product, grinding the solid glass product to produce glass particles having a particle size of less than 200 microns, mixing the glass particles with a first additive to form a glass powder mixture having a composition of 55 to 99 wt. % glass particles and 45-1 wt. % first additive, forming the glass powder mixture into tiles by dry pressing, where the tiles have a primary crystalline phase selected from the group consisting of nepheline, diopside, anorthite, wollastonite, melilite, merwinite, spinel, akermanite, gehlenite, crystalline phases based on iron substitutions in the crystalline phase, and mixtures thereof. The process includes a devitrifying step where the solid glass product is devitrified prior to the grinding step or the glass particles in the tile are devitrified after the forming step.

대표청구항 ▼

[ What is claimed:] [1.] A process of forming ceramic tiles having the appearance of tiles produced from clays comprising: melting a material which includes waste materials to form a glass melt; treating the glass melt to produce a solid glass product; grinding the solid glass product to produce gla

[ What is claimed:] [1.] A process of forming ceramic tiles having the appearance of tiles produced from clays comprising: melting a material which includes waste materials to form a glass melt; treating the glass melt to produce a solid glass product; grinding the solid glass product to produce glass particles having a particle size of less than 200 microns; mixing the glass particles with a first additive comprising a binder selected from the group consisting of clay, organic material, inorganic material and mixtures thereof, to form a glass powder mixture having a composition of 55-99 wt. % glass particles and 45-1 wt. % first additive; forming the glass powder mixture into tiles by dry pressing; and devitrifying the glass particles in the tile after said forming step under conditions effective to form tiles having a primary crystalline phase selected from the group consisting of nepheline, diopside, anorthite, wollastonite, melilite, merwinite, spinel, akermanite, gehlenite, crystalline phases based on iron substitutions in the crystalline phase, and mixtures thereof.