Hosokawa Micron Corporation

Hosokawa Micron Co., Ltd.

Masahiro Yoshikawa

Masuo Hosokawa

Makio Naito

Hiroya Abe

Kiyoshi Nogi

Takehisa Fukui

Tohei Yokoyama

Tomoyuki Chiba

Takashi Shibata

Disposed is a jet mill that has a cylindrical pulverization chamber () and a classification chamber () that connects to the pulverization chamber (). A fine-powder discharge port () and a classification rotor () are provided in the classification chamber (). A feedstock supply port () and at least one gas emission nozzle () are provided in the pulverization chamber (). The shape of the classification chamber () is a cone that starts on the inner wall of the pulverization chamber (), and is angled towards the classification rotor (). This configuration gives the jet mill high efficiency of pulverization and reduces the amount of powders left in the chamber when the jet mill has finished running.

Jet mill

In order to manufacture the compound powder or the porous granulated substance in an efficient manner, a powder processing apparatus has an accumulating face on which the processing target powder is to be accumulated and a processing face disposed in opposition to the accumulating face and convexly curved, and a moving means for moving the accumulating face and the processing face along the accumulating face relative to each other. The apparatus comprises an excitement treatment means capable of applying an excitation energy to the processing target powder accumulated on the accumulating face from an excitation energy supplying portion disposed in opposition to the accumulating face or an oscillation means for oscillating the accumulating face or the processing face in a direction intersecting the accumulating face.

Powder processing apparatus

Powder processing method

A manufacturing method of a superconducting material having the steps of: milling and mixing a powderly primary material in a casing of a dry type milling mixer; heat-processing the primary material obtained from the milling/mixing step; and again milling and mixing the primary material obtained from the heat-processing step in the casing of the milling mixer so as to obtain a secondary material. The milling mixer includes a casing for holding the primary material therein and friction-pulverizing mixing elements for frictionally pulverizing, stirring and mixing the primary material inside the casing. The two milling/mixing steps are effected under a high-speed rotation of the casing where a centrifugal force resulting from the casing rotation presses the primary material against an inner surface of the casing and a layer of the material formed on the surface is frictionally pulverized, stirred and mixed by the friction-pulverizing mixture elements.

Manufacturing method of superconducting material and product and

Growing community of inventors

Yawata, Japan

Masahiro Yoshikawa