Low bone China is a newly developed type of daily porcelain. Generally speaking, the raw material contains 10% bone meal. The literal difference between low bone China and high bone China is the content of animal bone powder in the raw materials. 10% bone powder is low bone China, while bone China requires at least 25% bone powder content, and the national standard is 35%. In fact, bone powder less than 25% can not be called bone China. It just borrows the high-grade quality of bone China.
Although low bone China has most of the characteristics of bone China and is popular, there are some differences between the two:
1. Differences in bone meal content: generally 10% bone meal can be called low bone China, while bone China needs more than 30%.
2. High bone China needs to be burned twice, while low bone China only needs to be burned once.
3. High-bone porcelain glaze must be glazed with spray gun after the product is not fired, while low-bone porcelain glaze only needs to soak all the mud in the glaze and take it out to dry.
Note that generally speaking, the bone China produced in Tangshan is mostly high bone China, while the bone China produced in Jingdezhen is mostly low bone China.