| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for producing fine powders, which can produce the fine metallic powders with a predetermined particle size while decreasing variation in their particle sizes, and can efficiently produce fine powders having different diameters. SOLUTION: The spray for producing the metallic fine powders has a two-fluid-nozzle structure which comprises a molten metal nozzle 1 for spouting a molten metal therethrough and a gas nozzle 2 for jetting a high pressure gas therethrough, and makes the high pressure gas aspirate the molten metal to spray the molten metal in a form of mist. The molten metal nozzle has a needle valve 8 arranged therein for adjusting the amount of the efflux. COPYRIGHT: (C)2009,JPO&INPIT
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