Can biochar only be dried at 80℃

Biochar can only be dried at 80 degrees Celsius. The drying time of biochar material is 12 ~ 24 hours at 70 ~ 90 degrees Celsius, and the dried straw is crushed and cracked for 2 ~ 4 hours at 250 ~ 600 degrees Celsius. Biochar is a kind of charcoal used as a soil improver, which can help plants grow. It can be used for agricultural purposes and carbon collection and storage, which is different from traditional charcoal which is usually used as fuel.