煅明矾法，始源甚早．《重修政和经史证类备用本草》：“雷公云今人但煅干计用，谓之枯矾，不假者谓之生研”。明矾含水硫酸铝押的复盐，具有收敛止血，涩肠止泻，扶风瘫，收湿止痒。传统银法．取净白矾揭碎置锅内，加热熔化，淮至水分完全蒸发，无气体放出，全部泡松呈白色月? The method of burning alum was very early. “Restoration of the government and the history of the prototype of a backup of the Materia Medica”: “Lei Gongyun today but calcined to use dry, that the dry withered, those who do not say that the study of Health.” Alum-containing aluminum sulfate alum compound salt, with astringent hemostasis, astringent intestinal diarrhea, Fufeng phlegm, dampness and itching. Traditional silver law. Take a net and remove it, put it in a pan, heat it and melt it, Huai until the water completely evaporates, no gas is released, and all the foam is white.