Roasting Ores
Ores are roasted in order to separate the volatile bodies from those which are more fixed, and is generally performed in a current of air so as to effect simultaneous oxidation. See ORES; WEATHERING ORES.
Twelve hundred entries from the golden age of cast metal — how bells are founded, why brass is not bronze, what a cupola melts and a core withstands — by Simpson Bolland, the trade's great teacher.
Ores are roasted in order to separate the volatile bodies from those which are more fixed, and is generally performed in a current of air so as to effect simultaneous oxidation. See ORES; WEATHERING ORES.