A glass or glass ceramic element for household and/or heating appliances is provided. The element includes a transparent glass or glass ceramic substrate and a coating. The substrate has a main surface. The coating is on at least a portion of the main surface. The coating is a glass-based coating that includes a pigment and a filler. The pigment includes an IR-reflecting material and the filler has a specific molar heat capacity of not more than 5 mJ/(mol.Math.K).

A glass or glass ceramic element for household and/or heating appliances is provided. The element includes a transparent glass or glass ceramic substrate and a coating. The substrate has a main surface. The coating is on at least a portion of the main surface. The coating is a glass-based coating that includes a pigment and a filler. The pigment includes an IR-reflecting material and the filler has a specific molar heat capacity of not more than 5 mJ/(mol.Math.K).

Provided is a glass composition comprising a glass frit containing P.sub.2O.sub.5, SiO.sub.2, B.sub.2O.sub.3, Al.sub.2O.sub.3, ZrO.sub.2 and a group I-based oxide, wherein the P.sub.2O.sub.5 is contained in an amount of 10 to 30% by weight based on a total weight of the glass frit, wherein the SiO.sub.2 is contained in an amount of 20 to 40% by weight based on the total weight of the glass frit, wherein the B.sub.2O.sub.3 is contained in an amount of 5 wt % to 18 wt % based on the total weight of the glass frit, wherein the Al.sub.2O.sub.3 is contained in an amount of 15 to 30% by weight based on the total weight of the glass frit, wherein the ZrO.sub.2 is contained in an amount of 1 wt % to 8 wt % based on the total weight of the glass frit, wherein the Group I-based oxide is contained in an amount of 15 to 30% by weight based on the total weight of the glass frit.

An enamel composition for a cooking appliance is prepared by a preparation method. The enamel composition includes glass frits, a siloxane-based compound, a silane-based compound, and mill addition. The mill addition includes one or more materials selected from a group comprised of SiO.sub.2, Al.sub.2O.sub.3, ZrO.sub.2, and TiO.sub.2, thereby suppressing defects such as chipping even when the enamel composition is used at high temperature, for pyrolysis of contaminants.

An enamel composition for a cooking appliance is prepared by a preparation method. The enamel composition includes glass frits, a siloxane-based compound, a silane-based compound, and mill addition. The mill addition includes one or more materials selected from a group comprised of SiO.sub.2, Al.sub.2O.sub.3, ZrO.sub.2, and TiO.sub.2, thereby suppressing defects such as chipping even when the enamel composition is used at high temperature, for pyrolysis of contaminants.

There is disclosed a novel enamel composition that may be applied to all diverse components for a cooking appliance, with excellent cleaning performance and adhesion. The enamel composition of the present disclosure may include 10 to 25% by weight of SiO.sub.2, 15 to 30% by weight of P.sub.2O.sub.5, 1 to 15% by weight of B.sub.2O.sub.3, 10 to 25% of at least one of Na.sub.2O, Li.sub.2O and K.sub.2O, 1 to 5% by weight of NaF, 15 to 35% by weight of at least one of Al.sub.2O.sub.3, TiO.sub.2 and ZrO.sub.2, and 1 to 10% by weight of at least one of Fe.sub.2O.sub.3, Co.sub.3O.sub.4 and NiO, thereby being applicable to coating of components for a cooking appliance such as a burner cap, a grate and a griddle in which food is vulnerable to contamination and subject to thermal shock.

A ceramic product includes a glass layer having 0.1 wt % to 9 wt % of a luster pigment for providing a metallic look. The glass layer includes 40 wt % to 60 wt % of silicon dioxide, 15 wt % to 35 wt % of boron oxide, 18 wt % or less of one or more alkali metal oxides selected from the group consisting of lithium oxide, sodium oxide, and potassium oxide, 4 wt % or less of one or more alkali metal oxides selected from lithium oxide and sodium oxide, and 5 wt % or more of potassium oxide.

A ceramic product includes a glass layer having 0.1 wt % to 9 wt % of a luster pigment for providing a metallic look. The glass layer includes 40 wt % to 60 wt % of silicon dioxide, 15 wt % to 35 wt % of boron oxide, 18 wt % or less of one or more alkali metal oxides selected from the group consisting of lithium oxide, sodium oxide, and potassium oxide, 4 wt % or less of one or more alkali metal oxides selected from lithium oxide and sodium oxide, and 5 wt % or more of potassium oxide.

A blank material for a ceramic tile consists of the following components in percentage by weight: nepheline powder: 10%-15%; clay with a carbon content of ≥3.0 wt %: 10%-15%; clay with a carbon content of ≤0.5 wt %: 15%-22%; clay with a carbon content between 0.5 wt % and 3.0 wt %: 10%-15%; recycled waste blank: 5%-10%; sodium potassium powder: 5%-10%; sodium feldspar powder: 12%-20%; desulfurization residue: 0%-7%; waste from edging and polishing: 15%-26%; waste porcelain powder: 5%-10%; liquid gel remover: 0.3%-1.0%; liquid reinforcing agent: 0.2%-0.8%. Its preparation method comprises the following steps: preparing raw materials for a blank body and ball milling, powder spray granulation, aging, pressing and molding of the blank body, drying, polishing the blank body, spraying water, glazing, applying a decorative pattern, firing.

A blank material for a ceramic tile consists of the following components in percentage by weight: nepheline powder: 10%-15%; clay with a carbon content of ≥3.0 wt %: 10%-15%; clay with a carbon content of ≤0.5 wt %: 15%-22%; clay with a carbon content between 0.5 wt % and 3.0 wt %: 10%-15%; recycled waste blank: 5%-10%; sodium potassium powder: 5%-10%; sodium feldspar powder: 12%-20%; desulfurization residue: 0%-7%; waste from edging and polishing: 15%-26%; waste porcelain powder: 5%-10%; liquid gel remover: 0.3%-1.0%; liquid reinforcing agent: 0.2%-0.8%. Its preparation method comprises the following steps: preparing raw materials for a blank body and ball milling, powder spray granulation, aging, pressing and molding of the blank body, drying, polishing the blank body, spraying water, glazing, applying a decorative pattern, firing.