Title:
VERTICAL MILL ROLLER
Document Type and Number:
WIPO Patent Application WO/2013/108807
Kind Code:
A1
Abstract:
When a starting material is crushed in a vertical-roller mill, highly efficient pulverization is performed irrespective of the type of starting material, and the usage lifespan of a mill roller is extended. In order to achieve this, a crushing roller (10) used in a vertical-roller mill is provided, wherein the roller outer circumferential surface (12), which is the crushing surface, is divided into a main crushing surface (12A) at which pulverization is mainly performed, and a crushing surface other than the main crushing surface (12A). Slit grooves (13) inclined at a right angle or an angle in excess of 45º relative to the circumferential direction of the roller are formed on the main crushing surface (12A), the number of slit grooves (13) being small at no more than half the number of slit grooves (11B) or screw grooves (11A) formed on the crushing surface other than the main crushing surface (12A).
Inventors:
KAWATSU HAJIME (JP)
Application Number:
PCT/JP2013/050727
Publication Date:
July 25, 2013
Filing Date:
January 17, 2013
Export Citation:
Assignee:
SHOJI CO LTD ING (JP)
International Classes:
B02C15/04
Domestic Patent References:
| WO2009157335A1 | 2009-12-30 | |||
| WO2012014271A1 | 2012-02-02 |
Foreign References:
| JPH03270740A | 1991-12-02 | |||
| JPH0239939B2 | 1990-09-07 | |||
| JP2863768B2 | 1999-03-03 | |||
| JPS63111939U | 1988-07-19 |
Attorney, Agent or Firm:
YANAGIDATE TAKAHIKO (JP)
Takahiko Yanagidate (JP)
Takahiko Yanagidate (JP)
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