Preparation method of red ceramic glaze

Abstract

The invention discloses a preparation method of red ceramic glaze. The preparation of the high-grade red glaze is realized by increasing the use amount of the iron oxide red pigment and a double-layer glaze process. The red ceramic glaze prepared by the invention is bright in color, bright in glaze surface, high in thermal shock resistance and low in price. The usage amount of the iron oxide red is more than 12%, preferably 16-30%, preferably 20-25%, and especially more than 40%.

Description

1. Technical field [0001] The invention belongs to the field of ceramic manufacturing, and particularly relates to a preparation method of red ceramic glaze. 2. Background technology [0002] Ceramic glaze is one of the important components of ceramics, which plays an important role in strengthening, anti-corrosion, dustproof and beautifying utensils. According to different colors, ceramic glazes are divided into blue glazes, black glazes, yellow glazes, red glazes, gray glazes and brown glazes. Among them, red glazes are the most widely used ceramic glazes. Compared with other color glazes, red glaze has always been favored by the Chinese due to the influence of traditional aesthetic concepts, and it is one of the most widely used color glaze varieties. Although red glaze is widely loved by the masses, it is difficult to manufacture high-quality red glaze due to the small variety of red pigments required for the manufacture of red glaze and poor high temperature stability....

AI Technical Summary

Problems solved by technology

Although red glazes are widely loved by the masses, it is difficult to manufacture high-quality red glazes due to the small number of red pigments required for the manufacture of red glazes and poor high temperature stability.

Commonly used red pigments for glazes are only a few types such as Dahong, Yuanzihong and Iron Oxide Red. Among them, the red glaze produced by Dahong has the best quality, bright color and high glaze brightness, but the price is very expensive; The red glaze produced by Yuanzihong pigment is also of good quality and bright glaze, but its color is too purple, not the red favored by Chinese people, and the price is relatively expensive; although iron oxide red pigment is cheap, but because of its chemical Poor stability and easy to change color at high temperature. The existing technology uses iron red as the chromogenic agent to produce low-grade red glaze. Not only is the color dark, but the glaze has low brightness and poor thermal shock resistance, making it difficult to achieve high-quality red. Quality requirements for glazes