Abstract: The apparatus for manufacturing solid particles at a nano level includes a chamber for isolation from an external space, a monoaxial rotary disk disposed in the chamber, a receiving surface at one end of the rotary disk, a material supply mechanism for supplying the material to the receiving surface, a rotary mechanism for applying a centrifugal force to the rotary disk so that the raw material supplied to the receiving surface is produced into a thin film and atomized and scattered from the outer peripheral edge, and a control mechanism for the temperature in the chamber that controls the temperature at least at the outer peripheral edge of the receiving surface and on the side nearer to the center of rotation to a temperature lower than a volatilization temperature of a volatile solvent and the temperature at the outer side therefrom to the volatilization temperature of the volatile solvent or higher.

Abstract: The apparatus for manufacturing solid particles at a nano level includes a chamber for isolation from an external space, a monoaxial rotary disk disposed in the chamber, a receiving surface at one end of the rotary disk, a material supply mechanism for supplying the material to the receiving surface, a rotary mechanism for applying a centrifugal force to the rotary disk so that the raw material supplied to the receiving surface is produced into a thin film and atomized and scattered from the outer peripheral edge, and a control mechanism for the temperature in the chamber that controls the temperature at least at the outer peripheral edge of the receiving surface and on the side nearer to the center of rotation to a temperature lower than a volatilization temperature of a volatile solvent and the temperature at the outer side therefrom to the volatilization temperature of the volatile solvent or higher.

Abstract: A method and an apparatus for finely dividing a molten metal by atomization is provided herein. This apparatus includes a nozzle for feeding a molten metal and an annular atomizing nozzle to force a high-pressure liquid jet against a stream of the molten metal flowing from the feed nozzle. The atomizing nozzle is made of an annular jetting zone adapted to form a narrow opening under the pressure of the high-pressure liquid, an inside jacket and an outside jacket adjacent to the annular jetting zone. The apparatus further includes a pressure reduction chamber located beneath the atomizing nozzle which is in contact with the lower part of the jet from the atomizing nozzle.