1, different raw materials: Bone China is made by adding about 30% of the bone powder of herbivores (preferably bovine bone powder) to the ceramic raw materials, and then firing it with high-temperature and low-temperature glaze and decal paper for three times. Ceramics is a world-famous China craft. The raw materials of these porcelains are mostly kaolin, porcelain stone and a little lime.
2. Different permeability: The function of bone meal is to increase the permeability of porcelain. Bone China generally contains 30%-45% animal bone powder, so the raw materials of bone China make it have good air permeability, while ceramics generally do not have good air permeability. Thin ceramics such as Linglong porcelain can transmit light.
3. Different thermal insulation: Bone China has better thermal insulation than ordinary porcelain, and can make better tea or coffee.
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Extended data:
The formation of bone China mainly depends on silica, alumina and calcium oxide. The higher the content of calcium oxide, the better the color. In nature, there are not many sources of calcium oxide, so animal bone meal is chosen as the source of calcium oxide.
The color of bone China is a natural milky white unique to natural bone powder. Generally speaking, porcelain containing 25% bone powder in raw materials can be called bone China, and internationally recognized bone powder content is above 40%. The best bone China generally contains 5 1% of high-quality bovine bone powder. Among them, bone powder accounts for more than 40%, and the color of the appliance is milky white, which belongs to high-grade bone porcelain.
References:
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