Title:
VIBRATION GRINDING CLASSIFIER
Document Type and Number:
WIPO Patent Application WO/1991/006370
Kind Code:
A1
Abstract:
A vibration grinding classifier for a mineral material, which is simple in construction, compact in size and capable of offering a satisfactory classifying accuracy. This classifier is provided with a vibration motor (3) for oscillating grinding media in an annular vibration tank (1) containing therein a multitude of grinding media for grinding a powdery material (P) and a supply opening for the material (P). The lower part of the tank (1) serves as a grinding chamber (1a) in which the opening width in the radial direction is progressively increased from the bottom upward. The bottom plate of the grinding chamber is provided with a multitude of perforations (4a) for feeding air, which communicate with an air opening (4) for a classifying gas. The upper part of the tank (1) acts as a classifying chamber (1b) extending upwardly with the same opening width as that at the top end of the grinding chamber maintained. The top of the classifying chamber is provided with a discharge opening (7) through which a ground article of an intended particle size or below is discharged together with the classifying gas blown up through the perforations (4a).
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Inventors:
SASAKI TERUMI (JP)
Application Number:
PCT/JP1990/001381
Publication Date:
May 16, 1991
Filing Date:
October 26, 1990
Export Citation:
Assignee:
KANSAI JARI KK (JP)
International Classes:
B02C17/14; B02C17/18; B02C23/10; B02C23/24; B02C23/30; B07B4/00; B07B4/08; B07B9/02; (IPC1-7): B02C17/14; B02C17/18; B02C23/10; B02C23/24; B07B4/08
Foreign References:
| JPS6463055A | 1989-03-09 | |||
| US3100088A | 1963-08-06 | |||
| JPH01293146A | 1989-11-27 |
Other References:
See also references of EP 0451290A4
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