Ceramic dry-pressed product and preparation method thereof

Abstract

The invention discloses a ceramic dry-pressed product which is prepared from a ceramic blank and silicasol, wherein the solid content of the silicasol accounts for 1-40% of the total amount of the ceramic blank. The invention also discloses a preparation method of the ceramic dry-pressed product. The silicasol is introduced into the ceramic blank, thereby being beneficial to reducing or cancelling the use of clay (mud), lowering the production cost, enhancing the strength of the pressed blank (or wet blank), increasing the whiteness and jade-like quality of the product and reducing deformation, pores, solution cavities or other phenomena of the product, so that the product performance is obviously improved, and the quality and competitive power of the product are enhanced; and thus, the invention has a great function for promoting the development of ceramic industry.

Description

technical field [0001] The invention relates to the technical field of ceramics, in particular to a dry-pressed ceramic product and a preparation method thereof. Background technique [0002] At present, the ceramic industry generally uses clay (black mud, mixed mud, kaolin, ball clay, washed mud, etc.) as the main plastic raw material to manufacture ceramic products. Endows ceramic products with formability. If clay (mud) plastic raw materials are not added to the green body formula, not only when the spray granulated powder is pressurized and formed, the granulated powder is easily broken, which affects the exhaust inside the powder during the molding process, resulting in the formation of the green body Cracking or delamination; moreover, the green body after forming (before drying) has very low strength, it is difficult to run on the conveyor line, and a slight vibration will cause the green body to break and be damaged. Therefore, usually all will add a certain amount...

AI Technical Summary

Problems solved by technology

However, after clay (mud) is added to the green body, since the clay (mud) contains a large amount of organic matter, it is easy to cause defects such as deformation, pores or caves in the green body during firing, thereby seriously affecting the quality of ceramic products; in addition , too much (ordinary) clay is added to the green body, the texture of ceramic products will deteriorate, and the whiteness will decrease

At the same time, due to a large amount of excessive mining, the reserves of non-magnesium and calcareous clay plastic materials such as black mud, mixed mud, and kaolin are getting less and less, the grade is getting lower and lower, and the mining cost is getting higher and higher.

Especially in southern regions such as Jiangxi (Gao'an) and Hunan, due to the lack of non-magnesium and calcareous clays such as black mud, mixed mud, and kaolin, the production cost of ceramic products is obviously higher, and the competitiveness of products has declined, which seriously affects the development of the ceramic industry.