RU2480432C1 - Mixture for making glazed tiles - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention relates to the technology of silicates and particularly to compositions of mixtures for making stove tiles and heat resistant ceramic tiles. The mixture for making glazed tiles contains the following components, wt %: mullite 7.0-9.0; corundum 0.5-1.0; alumina 0.5-1.0; kaolin 62.5-67.5; zirconium oxide 11.0-13.0; bone ash 11.0-13.0; calcium phosphate 1.0-2.0.

EFFECT: low firing temperature of articles made from the mixture.

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Description

The invention relates to the field of technology of silicates and relates to compositions of the mixture for the manufacture of stove tiles, heat-resistant ceramic tiles.

Known refractory material containing, wt.%: Mullite 10.0-25.0; corundum 20.0-48.9; alumina 20.0-30.0; clay or kaolin 15.0-25.0; stabilized zirconium oxide 3.0-10.0 [1].

The objective of the invention is to reduce the firing temperature of products obtained from a mixture.

The technical result is achieved in that the mixture for the manufacture of tiles containing mullite, corundum, alumina, kaolin, zirconium oxide, further includes bone ash and calcium phosphate, and the components are in the following ratio, wt.%: Mullite 7.0-9.0 ; corundum 0.5-1.0; alumina 0.5-1.0; kaolin 62.5-67.5; zirconium oxide 11.0-13.0; bone ash 11.0-13.0; calcium phosphate 1.0-2.0.

As part of the charge, high-quality kaolins of any deposits can be used.

The table shows the composition of the mixture for the manufacture of tiles.

Table Components Composition, wt.%: one 2 Mullite 7.0 9.0 Corundum 0.5 1.0 Alumina 1,0 0.5 Kaolin 67.5 62.5 Zirconium oxide 11.0 13.0 Bone ash 11.0 13.0 Calcium phosphate 2.0 1,0

Milled to a powder state (residue no more than 2% on mesh 008), the components of the charge are dosed in the required quantities and mixed. The resulting mixture is moistened to 19-23% and molded from it products (tiles, tiles) of the desired configuration, which are dried to a moisture content of not more than 6% and fired at a temperature of 1210-1270 ° C. On the surface of the fired tiles (tiles), they are painted with ceramic paints, a layer of transparent glaze is applied and secondly fired at a temperature of 970-1000 ° C.

Information sources

1. RU 2132312, C04B 35/101, 1999.

Claims (1)

The mixture for the manufacture of tiles containing mullite, corundum, alumina, kaolin, zirconium oxide, characterized in that it further includes bone ash and calcium phosphate, and the components are in the following ratio, wt.%: Mullite 7.0-9.0; corundum 0.5-1.0; alumina 0.5-1.0; kaolin 62.5-67.5; zirconium oxide 11.0-13.0; bone ash 11.0-13.0; calcium phosphate 1.0-2.0.