A kind of bottom glaze for the production of fully polished glazed tiles, which is beneficial to the color development of ceramic inks

Abstract

An underglaze used in the production of fully polished glazed tiles, which is beneficial to the color development of ceramic inks. The main raw materials of the underglaze are: 20-30% of potassium feldspar powder, 10-20% of feldspar powder, 5-10% of calcined kaolin powder, quartz powder 8-13%, kaolin powder 5-10%, calcined alumina powder 16-21%, calcined talc powder 1-3%, calcined zinc oxide 1-3%, zirconium silicate 9-15%, water reducing agent 0.3 ~0.4%, methyl 0.15~0.25%; single raw material chemical composition CaO content<3%; bottom glaze raw material chemical composition: SiO248.5~52.0%, Al2O330~34.5%, Fe2O30.1~0.2%, TiO20. 05~0.15%, CaO 0.1~0.3%, MgO 0.3~1.0%, K2O 3.0~4.0%, Na2O 1.5~2.5%, ZnO 0.9~3.0%, ZrO25~10%, firing reduction 0.9~2.0%; Technological process: batching→ball milling→sieving→iron removal→glazing slurry stale; method of using bottom glaze: glazing by bell-jar glazing process or linear glazing process. The invention enriches the color of the product, is beneficial to the color development of the ceramic ink, each color has a deeper color and a purer tone, and the product yield 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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