Ground coat used for producing fully-glazed ceramic tile and beneficial to color development of ceramic ink

Abstract

The invention discloses a ground coat used for producing a fully-glazed ceramic tile and beneficial to color development of ceramic ink. The ground coat is mainly prepared from, by weight, 20%-30% of potassium feldspar powder, 10%-20% of feldspar powder, 5%-10% of calcined kaolin powder, 8%-13% of quartz powder, 5%-10% of kaolin powder, 16%-21% of calcined alumina powder, 1%-3% of calcined talcum powder, 1%-3% of calcined zinc oxide, 9%-15% of zirconium silicate, 0.3%-0.4% of water reducing agent and 0.15%-0.25% of methyl. The content of single raw material chemical component CaO is smaller than 3%. The raw material chemical components of the ground coat comprise 48.5%-52.0% of SiO2, 30%-34.5% of Al2O3, 0.1%-0.2% of Fe2O3, 0.05%-0.15% of TiO2, 0.1%-0.3% of the CaO, 0.3%-1.0% of MgO, 3.0%-4.0% of K2O, 1.5%-2.5% of Na2O, 0.9%-3.0% of ZnO, 5%-10% of ZrO2 and 0.9%-2.0% of igloss. The technological process of the ground coat includes the steps of blending, ball milling, sieving, deironing and glaze slip staling. The using method of the ground coat includes the step of glazing through a bell jar glaze pouring technology or a linear glaze pouring technology. By the adoption of the ground coat, the colors of the product are enriched, color development of the ceramic ink is facilitated, color development of each color is deeper, the hue is pure, and the rate of qualified products is high.

Description

technical field [0001] The invention relates to an underglaze used in the production of fully glazed tiles, in particular to an underglaze used in the production of fully glazed tiles and beneficial to the color development of ceramic ink. Background technique [0002] my country is the world's largest producer of ceramics, not only daily-use porcelain and decorative porcelain, but also the output of architectural and sanitary ceramics ranks first. [0003] Ceramic polished tiles are the most popular variety in architectural decoration. With the continuous upsurge of architectural decoration, the design of ceramic polished tiles incorporates more artistic elements and the technological content is increasing day by day. [0004] Fully glazed ceramic tiles are architectural ceramic products that have been popular in the market in recent years. Before 2011, they were mainly completed by screen or roller printing technology. With the introduction of ceramic inkjet printing techn...

AI Technical Summary

Problems solved by technology

[0005] At present, the full-polished bottom glaze used by full-polished glazed tile manufacturers mainly has problems such as: unsatisfactory color development, not wide firing range, affecting product flatness, and easily causing pinholes and melting holes on the brick surface.

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