摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for finely dividing particles, whereby stable fine division is possible because of their ability to inhibit, e.g. the deformation of particles, the wear of the apparatus mechanism, the contamination of finely divided particles with foreign matter, the re-aggregation of particles, and the oxidation of finely divided particles in the case when the divided particles are in the form of a metallic powder or an alloy powder. SOLUTION: A method and an apparatus for finely dividing particles are provided. This method comprises jetting a high-pressure liquid from a nozzle to release its pressure, introducing particle-containing slurry into the liquid jet to allow the particles to collide against each other or against a rigid body to be finely divided; separating the mixture after the collision into a substantially particle-free liquid and a slurry containing many particles, recirculating the substantially particle-free liquid as the above high-pressure liquid into the nozzle, and recirculating the slurry as the above particle-containing slurry and an apparatus for finely dividing particles.
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