Petalite heat-resistant ceramic wok and preparation process thereof

Abstract

The invention relates to a petalite heat-resistant ceramic wok. The petalite heat-resistant ceramic wok is prepared by firing the following raw materials in parts by weight: 45 to 65 parts of petalite, 15 to 40 parts of spodumene, 12 to 20 parts of quartz, 15 to 20 parts of kaolin, 6 to 9 parts of talc, 5 to 8 parts of microcrystalline ceramic powder, 1 to 3 parts of halloysite nanotubes, 0.5 to 1part of nanometer tungsten carbide powder, 0.5 to 1 part of nanometer technetium oxide powder, 0.3 to 0.5 part of polyacrylamide. The petalite heat-resistant ceramic wok utilizes the cheaper petaliteas a main raw material, and the prepared petalite heat-resistant ceramic wok has good thermal shock resistance, good crack resistance, good wear resistance and good thermal conductivity.

Description

technical field [0001] The invention belongs to the technical field of inorganic ceramic materials, and in particular relates to a lithium permeable feldspar heat-resistant ceramic frying pan with low expansion rate and good thermal shock resistance. Background technique [0002] Ceramic cooking utensils have unique advantages such as good heat storage, environmental protection, and corrosion resistance. Various ceramic cooking utensils have appeared in common people's homes and catering industries, competing with traditional metal cooking utensils. [0003] In the 1990s, my country began to research and develop ceramic pots and utensils made of low-expansion new materials. New products were put on the market and were well received by consumers. Patent CN1071405A "Direct Heating Ceramic Pot Formula" discloses a formula in which nearly 30% of industrial Al2O3, MgO, ZrO2 materials are added to the usual clay, quartz, clinker and other raw materials used in the production of ce...

AI Technical Summary

Problems solved by technology

Traditional ceramic pans have poor thermal shock resistance. For ceramic woks that use high temperature, rapid fire, and large temperature difference heating methods such as frying, frying, and frying, cracking defects are extremely prone to occur. The inventor of the present application previously applied for patent ZL200910115876. X discloses a super heat-resistant ceramic frying pan, with 45%~50% spodumene, 12%~20% quartz, 15%~20% kaolin, 6%~10% talc, 6%~7% waste porcelain Slag, 0.5% ~ 1% niobium oxide, 0.3% ~ 0.5% polyacrylamide, which reduces the expansion coefficient, good heat resistance and wear resistance

However, relatively speaking, the long-term heat-resistant stability and crack resistance need to be further improved to improve the service life of heat-resistant ceramic woks and improve market competitiveness.