Preparation method of harmless yellow ceramic glaze

Abstract

The invention discloses a preparation method of harmless yellow ceramic glaze. The harmless yellow ceramic glaze is prepared from potassium feldspar, dolomite, aluminum oxide, asbestos tailing slag, kaolin, zirconium oxychloride octahydrate, ethyl orthosilicate, lithium fluoride, dibutyl phthalate and the like. The potassium feldspar, the dolomite, the asbestos tailing slag and the like are blended and smelted to prepare glaze base materials, yellow dye powder is prepared from the ethyl orthosilicate, praseodymium oxide and like, auto-combustion powder is prepared from the dibutyl phthalate and the like, the lithium fluoride is added in preparation of the yellow dye powder, a reaction place is provided for precipitation of zirconium silicate crystals, temperature needed by reaction of thepraseodymium oxide is reduced, interface bonding of the yellow dye powder and the glaze base materials is optimized, environmental pollution is greatly reduced by a preparation process of the ceramicglaze, process conditions are mild, the obtained glaze is fine, smooth and bright in color, the requirements of consumers can be met, and the preparation method has excellent generalization performance and practicability.

Description

technical field [0001] The invention relates to the technical field of ceramic materials, in particular to a preparation method of a harmless yellow ceramic glaze. Background technique [0002] Ceramic glaze is an important raw material that must be used in the production of ceramics. It has a strong protective effect on the ceramic body. At the same time, the physical properties of silicate make the glass enamel on the ceramic surface effectively resistant to acid and alkali corrosion. Very good antibacterial properties. Ordinary ceramic colored glazes add metal colorants to the glass enamel to achieve color development during the firing process. Such glazes are often single in color and cannot highlight the artistic beauty and high-temperature firing of ceramic colored glaze mineral raw materials. Special artistic effects produced during the production process. [0003] With the progress of society, people's demand for decorative beauty is gradually increasing, which als...

AI Technical Summary

Problems solved by technology

However, due to the stable structure of zirconium silicate, it is difficult to dissolve the rare earth praseodymium into the crystal lattice of zirconium silicate in the hydrothermal process, and the method of high-temperature calcination is a great waste of energy, and the combination of the obtained pigment powder and glaze is not enough. Ideal, there are defects such as low hiding power, high temperature viscosity, uneven glaze, etc., so its use is limited