Color generation ceramic blank and preparation thereof

Abstract

The invention discloses a material formula for colorful ceramics and a method for preparing the coloring ceramics, belonging to the ceramic blank preparation technical field. The ceramic blank comprises the following materials in weight percentage: 50 to 60 percent of kaolin sand, 25 to 45 percent of kaolin and 5 to 15 percent of mineralizer, wherein the materials are evenly mixed and subjected to ball milling, ageing, drying, re-ageing, pressing and high-temperature calcining to obtain the blank having effects of showing light mauve to deep mauve. The invention does not need add coloring agents and is characterized by low cost and stable coloring effect.

Description

technical field [0001] The invention relates to a ceramic body, in particular to a coloring process for the ceramic body. Background technique [0002] With the development of science and technology and the improvement of people's living standards and aesthetic awareness, the requirements for new building materials are constantly increasing, which has prompted the birth of building materials with special decorative effects. Conventional tiles need to add iron oxide red pigments to their formula to make them appear different colors after firing. However, most of the existing industrial iron oxide reds are not stable enough in the ceramic body. When the ceramic color body is fired at a high temperature (about 1200 ° C), the sulfuric acid method iron oxide red is easy to turn black due to instability. The roasting iron oxide red has poor color due to its low purity and insufficient stability, while the mixed acid iron oxide red has good color stability, but the cost of raw mat...

AI Technical Summary

Problems solved by technology

However, most of the existing industrial iron oxide reds are not stable enough in the ceramic body. When the ceramic color body is fired at a high temperature (about 1200 ° C), the sulfuric acid method iron oxide red is easy to turn black due to instability. The roasted iron oxide red has poor color due to its low purity and insufficient stability. The mixed acid iron oxide red has good color stability, but the cost of raw materials is too high

[0003] Therefore, people have been looking for a coloring material with good stability and cheapness, such as Chinese patents CN86100780.8, CN97106376.X, CN87106377.8, CN 1113479A, CN1108618A, etc., all of which utilize iron-containing industrial waste residues to prepare colored paints. Iron red, but all of them cannot be used for high temperature ceramic coloring due to their poor stability

Prior to this invention, no one had considered solving this problem from the original ceramic body formulation