Loading patent…
AssigneesItoh Metal Abrasive Co., Ltd., Sato Technical Research Laboratory Ltd.
InventorsSetsuo Ueda, Takashi Yasuda, Tokuyoshi Yamada, Shigeki Kobayashi
Estimating the term…
An apparatus is disclosed for producing spherical particles or fibers with a specially fixed size from a melt of metal, slag, or flux, by introducing the melt onto the center of a rotating disk through a conduit so as to form a thin film stream of boundary layer on the disk; projecting the thin film stream at a high speed from the disk periphery into surrounding space to split up the film stream into linear streams; and cooling the linear streams for producing fibers or cooling droplets after further splitting of the each linear stream into droplets for producing spherical particles, with or without parallel or countercurrent gas flow to the linear streams.
An apparatus for producing uniform sized spherical particles or fibers from a melt, comprising a solidification chamber of substantially cylindrical shape with a tundish disposed on a top portion of said chamber for maintaining a fixed head of the melt therein, a conduit fitted in the bottom of said tundish and having an outlet opening, a rotating disk having a flat refractory surface with a diameter between 50 and 200 mm disposed within said chamber at a fixed distance h.sub.o from said outlet opening of said conduit, said conduit for introducing said melt onto said disk, said conduit having an outer opening with a radius r.sub.o of 3 to 30 mm, whereby said distance h.sub.o is maintained within a range of (r.sub.o /2) to (r.sub.o /2)+2 mm, a driving apparatus for rotating said disk at a high rotational speed in the range of 3000 to 30,000 rpm, and means having an annular opening for emitting or receiving a gas to or from said chamber at the level of said disk forming gas streams in a direction opposite the direction of linear streams formed on said disk.
Dependencies are inferred from the claim text.