High-whiteness ceramic tile and preparation method thereof

Abstract

The invention provides a high-whiteness ceramic tile and a preparation method thereof. The preparation method comprises the following steps: preparing raw materials, performing wet-process ball milling, adding water to dilute, magnetically separating, sieving, concentrating and regulating concentration, spray-drying and pelletizing, forming, drying, applying glaze to a glazed brick (canceled for an unglazed brick), sintering, polishing and cutting, inspecting and packaging. By adopting the novel process, the magnetically separating effect of a magnetically separating procedure is greatly improved, the content of magnetic substances in the base body is greatly reduced, and the sintering whiteness of the base body is greatly increased. After a novel process is adopted, the iron content in a base body can be reduced by 0.3-1%, and the base body sintering whiteness is greatly increased by 10-40 degrees in comparison that before magnetically separating; a low-price argillaceous sand stone raw material which is high in iron content and low in sintering whiteness can be adopted in the formula of the ceramic base body to replace raw materials with low iron content and high whiteness of each current manufacturer to produce the base body with whiteness reaching the whiteness required by a high-grade wall and floor tiles, and a ceramic product, so that the base body formula cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of ceramics, and in particular relates to high-whiteness ceramic tiles and a preparation method thereof. Background technique [0002] Ceramic bricks are plate or block ceramic products produced from clay and other inorganic non-metallic raw materials through molding and sintering processes, and are used to decorate and protect the walls and floors of buildings and structures. It is usually shaped by dry pressing, extrusion or other molding methods at room temperature, then dried and fired at a certain temperature. [0003] At present, the preparation process of ceramic wall and floor tiles in various countries in the world is roughly as follows: raw material ingredients - wet ball milling - spray drying granulation - molding - drying - glazed tile glazing (unglazed tiles do not have this item) - drying ——firing—polishing—inspection—packaging. [0004] With the improvement of people's production and living...

AI Technical Summary

Problems solved by technology

[0005] In this case, the existing technology needs to have a single raw material with good whiteness, such as: high, medium and low temperature sand with good whiteness, washed mud with good whiteness, and sand with good whiteness Kaolin, etc., these single raw materials with good whiteness are expensive

Therefore, the ceramic wall and floor tile products with high whiteness of fired bodies such as secondary cloth polished bricks and ultra-white bricks produced by the existing technology have relatively high formula costs for the body materials used, and the general base material is 90-130 RMB / ton formula dry material cost, while the cost of secondary fabric fabric or ultra-white brick material fluctuates according to the location of the factory and the different requirements of each company for whiteness, and may be as high as 350-450 yuan / ton