| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for manufacturing easily a spherical fine inorganic powder comprising an oxide such as silica or alumina and having an average particle diameter of 0.5 to 3μm. SOLUTION: The method for manufacturing the spherical fine inorganic powder is one comprising spheroidizing an inorganic raw material powder by spraying it into a flame, wherein the inorganic raw material powder of 0.5-3μm average particle diameter is mixed with a dispersible surface treating agent, and the resultant mixture is sprayed into the flame of a thermal spray burner, whereupon the inorganic raw material powder can be prevented from adhering to the thermal spray burner and to piping and from agglomerating into particles with increased diameters during thermal spraying. The manufacturing apparatus used therefor is also provided. COPYRIGHT: (C)2007,JPO&INPIT
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