Why is bone china better than ceramics

Why is bone china better than chinaware ceramic? The two basic characteristics of bone china are: 1. The content of bone charcoal is more than 36% (national standard) 2. It is made by second firing (bisque, glaze firing). Differences from ordinary ceramics: 1. with different compositions are various products made from clay or a mixture containing clay through mixing, forming, and calcination. Its main raw material is silicate minerals derived from nature (such as Clay, quartz, etc.) belong to the category of 'silicate industry'. Bone china is a high-end porcelain. It is made by adding herbivore bone meal as raw material to porcelain clay such as phosphate, kaolin, quartz, and feldspar, and fired with calcium phosphate as a solvent. The content of bone powder must not be less than 40 %. The bone meal uses herbivorous animals such as cattle, sheep, pig bones, and cattle bones are preferred. 2. The firing process is different. Most common chinaware ceramic are fired at one time. Bone china is fired twice by high-temperature biscuit firing and low-temperature glaze firing. The difference between bone china and blue and white porcelain: Blue and white porcelain refers to the decoration method of porcelain, which is an underglaze decoration method in Jingdezhen. Bone china refers to the material of porcelain, which refers to the porcelain clay mixed with animal ashes. In theory, bone china can also be decorated with blue and white, but because bone china itself is more expensive, the firing of blue and white porcelain requires a very high temperature, which will easily cause the failure rate of bone china to increase, especially with the porcelain white porcelin dinnerware clay of Chaozhou. Medium-temperature porcelain will definitely break if it is fired at a high temperature, so no one uses blue and white to decorate bone china. Even if the bone china is blue and white, it is in-glaze. It is an imitation, not a real blue and white porcelain. New bone china is a kind of single-fired porcelain with a slightly higher calcium oxide content than ordinary ceramics. It belongs to the category of ordinary porcelain. Ordinary porcelain generally refers to daily-use porcelain that is fired at one time with china clay as the main raw material. It has nothing to do with bone china. . Synthetic bone china refers to the use of synthetic bone meal instead of bovine bone meal, and can also be called bone china. Bone china is a kind of high-grade porcelain, which is characterized by thinness, lightness and transparency.

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