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... ze wares of the Shang Dynasty to the iron smelting of the Spring and Autumn Period and the Warring States Period, charcoal was used, and its hygroscopicity was used to observe climate changes.
The firing of charcoal is very simple. There are basically two methods. One is the kiln firing method. The kiln is built with soil, filled with wood, and fired from the kiln door or fire door, so that the wood is carbonized in the kiln and the volatiles escape. out and the remaining charcoal.
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