MANUFACTURING APPARATUS OF POLYCRYSTALLINE SAPPHIRE

摘要

PURPOSE: An apparatus of manufacturing polycrystalline sapphire is provided to secure high density polycrystal sapphire grains by rapidly cooling a low density alumina material. CONSTITUTION: A melting furnace(10) includes a melting part(100). The melting part changes an alumina material into an alumina solution. The melting part successively discharges the alumina solution. A cooling reactor(20) quenches the alumina solution discharged from the melting furnace. The cooled reactor changes the alumina solution into polycrystal sapphire grains.