Dropping pipetype granular crystal manufacturing apparatus and granular crystal manufacturing method

Abstract

A dropping pipe type granular crystal manufacturing apparatus 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 is disposed at the upper end of the dropping pipe, stores the melted solution of the inorganic material, and is rotatable around the vertical axis thereof, and the plurality of small diameter nozzles formed radially from the vertical axis thereof are formed at the outer peripheral part of the crucible. The crucible is rotatingly driven by a rotatingly driving means, the crucibleand the inorganic material stored in the crucible are heated by a heating means, and cooling gas flow is formed in the dropping pipe by a gas flow formation means.

Description

technical field [0001] The present invention relates to a downpipe type granular crystal production device and a granular crystal production method in which granular liquid droplets of inorganic materials are freely dropped in a downtube and solidified to produce approximately spherical crystals, and particularly relates to spraying from a plurality of nozzles formed in a crucible by centrifugal force. Technology for producing granular droplets. Background technique [0002] U.S. Patent No. 4,322,379 discloses a technique in which silicon of a semiconductor is heated inside the upper end of a quartz drop tube to form a molten liquid, and the gas pressure of helium gas is applied to the molten liquid to make the granular molten liquid Freely fall in the drop tube, and solidify during the free fall to produce teardrop-shaped crystals of approximately a certain size. However, due to the falling resistance of the gas in the falling tube, it does not have a sufficient micro-grav...

AI Technical Summary

Problems solved by technology

[0010] However, in this spherical crystal manufacturing apparatus, the number of droplets that can be dropped per unit time is small, making it difficult to efficiently mass-produce spherical crystals.

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