Bone china cup material introduction | Win-Win

October 19, 2022

Bone clay: According to the latest statistics, more than 180 bone china clay deposits have been discovered nationwide. Among them, Hunan accounts for 29% of the national total, followed by Jiangsu, Guangdong, Jiangxi, Liaoning, and Fujian Gaoling has proven reserves of more than 10 million tons.

Quartz: Quartz is abundant on Earth. It is a non-plastic bone china material in the bone china industry. It can be used to prepare bone china and glaze. China is rich in high-quality quartz resources, including Hunan, Jiangxi, and Kaolin, which usually exist in the form of crystal, vein quartz, quartzite, quartz sandstone, quartz sand, flint, diatomite, sea pebbles and powder quartz. The chemical composition of quartz is mainly silica. Quartz is the main raw material in bone china, it can reduce the plasticity of bone china clay, reduce the drying shrinkage of the human body, shorten the drying time, and prevent the human body from deforming.

During firing, the thermal expansion of the quartz can partially offset the shrinkage of the green body. At high temperatures, quartz becomes the skeleton of the green body, and mullite forms with alumina to prevent softening and deformation. Quartz can also improve the whiteness of porcelain. Hardness and translucency, quartz can increase the melting temperature and viscosity of the glaze in the glaze, reduce the expansion coefficient of the glaze, and also improve the mechanical strength, hardness, abrasion resistance and chemical resistance of the glaze. The main function of quartz is to reduce the firing temperature. During firing, quartz melting can fill the voids between green particles and facilitate the melting of other mineral raw materials. Quartz raw materials can also densify and improve the texture of the green body, the mechanical strength, electrical properties and translucency of bone china products. Among all kinds of bone china products, feldspar is an indispensable and commonly used bone china raw material.

Tangshan Win-Win Ceramics is a company specializing in the production and processing of bone china dinnerware, ceramic water cups, bone china tea sets, bone china coffee cups, bone china advertising cups, bone china gift cups, conference cups and other products. It has a complete and scientific quality management system. Always adhering to the tenet of "customer first, quality first, reputation first" and the development concept of "quality is the life of the enterprise, culture is the brand of the enterprise", it pays great attention to the innovative combination of traditional ceramic culture inheritance and modern ceramic culture.


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