Method for preparing medium-temperature high-alumina high-strength domestic ceramics

Abstract

The invention discloses a method for preparing medium-temperature high-alumina high-strength domestic ceramics. The method comprises the following production steps: 1, preparing a blank, namely by taking corundum, potassium feldspar, kaolin, ball clay, talc, zinc oxide and zirconia as raw materials, performing wet milling, removing iron, performing filter pressing, pugging, and preparing an ejection material for later use; 2, preparing a glaze, namely taking potassium feldspar, quartz, talc, kaolin, stalactite, zinc oxide and corundum as raw materials of the glaze, mixing the materials, and performing ball milling; removing iron from ball-milled material through an iron removal machine, passing the material through a 325-mesh screen, and preparing a finished glaze for later use; and 3, performing a product manufacturing process comprising molding, fettling, glazing and firing, thereby preparing the medium-temperature high-alumina high-strength domestic ceramic product. The domestic ceramic product prepared by the method is high in yield, regular in appearance and flat in glaze surface; the thermal shock resistant test proves that the domestic ceramic product of 200 DEG C is not cracked when added into water at the temperature of 20 DEG C for performing heat exchange once; the Vickers microhardness of the glaze surface is higher than 6.0GPa; and the shock strength is higher than 1.5J / cm<2>.

Description

technical field [0001] The invention relates to the field of ceramics, in particular to a method for preparing medium-temperature, high-aluminum, high-strength daily-use ceramics. Background technique [0002] Daily-use ceramics refer to ceramic products used to contact food, such as tableware, tea sets, etc. There are many kinds of modern daily-use ceramics, including porcelain and pottery, high, medium and low temperature firing, bone, magnesia, high quartz, shellfish and so on. In addition to hygiene requirements (such as lead and cadmium dissolution limits), the technical requirements for daily-use ceramics also include requirements for appearance, water absorption, whiteness, and thermal shock resistance. Daily-use ceramics of different materials have their own characteristics, such as bone china, which has good light transmittance and high appearance quality, but they also have relative weaknesses. [0003] Ceramics, especially porcelain products, have higher hardnes...

AI Technical Summary

Problems solved by technology

And when the aluminum content is high to a certain level, many obstacles will appear in the molding and firing of the product, and the product will be seriously unqualified or scrapped in batches.