Kobe Steel, Ltd.

Hisai Ishizuka

Kunihiko Tsuji

Hiroshi Omura

Sigezo Kawakami

Apparatus for performing operations of agitating a material to be treated in a rotary kiln and scraping away substances adhering to the inner wall of the rotary kiln effectively at a high efficiency so as to operate the rotary kiln continuously for a long time and perform the heat treatment in the rotary kiln very smoothly. The apparatus includes a cylindrical cage having openings enabling a material to be treated to pass therethrough in both the axial direction and the radial direction, the cage including a supporting frame and a plurality of plate members extending in the axial direction of a kiln proper and being arranged at prescribed intervals on the outer periphery of the supporting frame, the cage having a diameter smaller than the inner diameter of the kiln proper and being inserted in the kiln proper in such a state that at least one of the plate members is contacted with the inner face of the kiln proper so that the cage is freely rotated with rotation of the kiln proper, and stop means engaged with a part of the cage to intermittently stop the rotation of the cage.

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Kobe, Japan

Hisai Ishizuka