To granulate slag produced in a refining process to slag which has a relatively irregular shape and is amorphous or low in crystallinity without crushing it with a crusher or the like.
Particulate matter is blown toward slag in a molten state, a red-hot state, or a high-temperature coagulated state with a carrier gas to granulate the slag. Since the slag is crushed into granules using the kinetic energy of the particulate matter, the flow rate of the gas blown toward the slag can be reduced compared with conventional air granulation, and relatively irregular-shaped deformed slag particles can be obtained. In addition, since a large cooling action is obtained by blasting the particulate matter and carrier gas and the slag is not slowly cooled but is quenched, the slag can be formed into slag particles which are amorphous or low in crystallinity.
TOFUSA HIROYUKI
YABUTA KAZUYA
