A kind of glazing method with stable temperature glazing of glaze slurry

Abstract

The invention discloses a glaze slip pouring method for stably pouring glaze slip at the constant temperature. According to the method, a closed-loop glaze slip circulating system formed by two constant-temperature glazing vats, two glazing pumps, a glaze slip pouring bell jar and a glaze slip pouring hopper is adopted, wherein the constant-temperature glazing vats are provided with spiral cooling channels; and in the whole glaze slip circulating system, the glaze slip is in the rhythms of temperature lowering, circular flow and sieving treatment all the time. The problems of glaze slip thixotropy, glaze slip liquid level skinning, glaze slip nonuniformity and the like occurring in the glaze slip pouring process are well solved; meanwhile, some large impurity particles can be filtered out; the liquid level of the glaze slip in the main glaze vat is stable, and the main glaze vat plays a role of a stable footstone for a whole glaze slip pouring system; and by means of the glaze slip pouring method for stably pouring the glaze slip at the constant temperature, stability of the whole glaze slip pouring process for green bricks is well maintained.

Description

technical field [0001] The invention relates to a method of glaze pouring in ceramic production, in particular to a method capable of keeping the constant temperature of glaze slurry and stabilizing the glaze spraying process. Background technique [0002] At present, in ceramic production, glazing seems to be a relatively simple process, but it is a relatively error-prone process. Many ceramic tile glaze defects are caused by glazing, such as glaze ripples, unevenness, pinholes, and glaze bubbles. , Glaze powder and other defects, defects caused by glazing account for a large proportion of tile defect degradation. At present, the glazing process mainly adopts the method of glazing with a single glaze vat, one glaze vat and one glaze pump, the glaze pump pumps the glaze and transports it to the glaze hopper, and part of the glaze in the glaze hopper flows down to the glaze bell jar, and the glaze is formed by the glaze bell jar. The curtain is poured on the brick surface, a...

AI Technical Summary

Problems solved by technology

The thixotropy of the glaze in the glaze vat also leads to the unevenness of the glaze slurry, and the unevenness of the glaze slurry will cause the product color to be unstable after firing.

[0004] 2. During the use of the glaze slurry in the glaze vat, the liquid level of the glaze slurry will gradually drop, and when it drops to a certain position, new glaze is added, and the liquid level rises again. This is very unfavorable for the stable glazing. The level of the glaze slurry will affect the pressure of the glaze pump, thus affecting the change of the glaze volume. The change of the glaze volume is the change of the entire circulatory system.

When the liquid level of the glaze slurry is lower than or parallel to the discharge hole of the glaze pump, the glaze slurry flows out of the discharge hole of the glaze pump quickly and easily floats out. At the same time, the glaze slurry is easy to generate air bubbles, and the discharge hole loses external pressure and the flow rate increases. The amount of glaze transported upwards will be reduced, which is very unfavorable for glazing

[0005] 3. The glaze slurry is viscous, easy to precipitate, and has high requirements for the same color and uniformity. The glaze pump needs to be stirred continuously in the glaze vat, and the rotating friction of the stirring blade generates a lot of heat, which leads to an increase in the temperature of the glaze slurry. High temperature of the glaze slurry will cause glaze slurry Poor performance, the glaze slurry will become sticky, the water evaporation of the glaze slurry will be accelerated, and the amount of glaze glaze will be unstable, etc.

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