Title:
ROLLER MILL
Document Type and Number:
WIPO Patent Application WO/1985/000302
Kind Code:
A1
Abstract:
A roller mill presses a material fed to the gap between the upper surface of a grinding table and a grinding roller, thereby reducing the material to powder. The grinding roller is provided thereon with at least one annular recess which is coaxial with the shaft of the roller, thereby reducing self-excited vibration and improving grinding efficiency. Moreover, to increase the effect of the recess, the depth of the recess is made larger than the average particle size of the material. Further, the cross-sectional configuration of the gap between the grinding table and the grinding roller is designed so as to be a wedge shape which narrows toward the outside of the grinding table, whereby the material being ground by pressing is prevented from escaping toward the axis of the roller shaft, thereby reducing self-excited vibration and improving grinding efficiency.
Inventors:
SHIMOJIMA KATSUHIKO (JP)
HAMAGUCHI MASAKI (JP)
OBANA HIROSHI (JP)
AIZAWA TAKEMI (JP)
NINOMIYA HIROYUKI (JP)
HAMAGUCHI MASAKI (JP)
OBANA HIROSHI (JP)
AIZAWA TAKEMI (JP)
NINOMIYA HIROYUKI (JP)
Application Number:
PCT/JP1984/000334
Publication Date:
January 31, 1985
Filing Date:
June 28, 1984
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
ONODA CEMENT CO LTD (JP)
ONODA CEMENT CO LTD (JP)
International Classes:
B02C15/04; B02C15/00; (IPC1-7): B02C15/00; B02C15/04
Foreign References:
| JPS51131954A | 1976-11-16 | |||
| JPS57197043A | 1982-12-03 |
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