| 摘要 |
A dropping pipe type granular crystal manufacturing apparatus (1) capable of manufacturing generally spherical crystal bodies by rapidly solidifying the granular droplets of an inorganic material by using the contact thereof with the inside wall surface of a dropping pipe as a solidifying trigger while jetting the droplets from the nozzles of a rotating crucible by a centrifugal force and allowing the droplets to fall freely inside the dropping pipe. The crucible (12) is disposed at the upper end of the dropping pipe (4), stores the melted solution of the inorganic material, and is rotatable around the vertical axis thereof, and the plurality of small diameter nozzles (23) formed radially from the vertical axis thereof are formed at the outer peripheral part of the crucible (12). The crucible (12) is rotatingly driven by a rotatingly driving means (13), the crucible (12) and the inorganic material stored in the crucible (12) are heated by a heating means (15), and cooling gas flow is formed in the dropping pipe (4) by a gas flow formation means (5). ® KIPO & WIPO 2007
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