Title:
VERTICAL ROLLER MILL
Document Type and Number:
WIPO Patent Application WO/2011/077565
Kind Code:
A1
Abstract:
Provided is a vertical roller mill which is equipped with a rotary table (1) driven to rotate, and a plurality of grinding rollers (2) comprising free rollers placed at fixed positions on the rotary table (1) so as to surround the rotation center line of the rotary table (1) to bite and crush a material to be ground between the turn table (1) and grinding rollers (2) with rotary driving of the rotary table (1). The vertical roller mill has a plurality of oblique slit grooves (6) placed at predetermined intervals in the perimeter direction on the annular crushing portion (3) on the upper face of the rotary table: each of the oblique silt grooves (6) is inclined to the table rotation direction or the reverse rotation direction thereof and is placed in a region of the angle of 45º or more to the table radius line. The above constitution enables improvement of performance of feed control of the raw material like coal or petrol cokes as well as improvement of the performance of biting and crushing of a material.
Inventors:
KAWATSU Hajime (12-13, Seifusoo 1-chome Toyonaka-sh, Osaka 41, 〒5600041, JP)
Application Number:
JP2009/071663
Publication Date:
June 30, 2011
Filing Date:
December 25, 2009
Export Citation:
Assignee:
ING SHOJI Co., Ltd. (3-47, Kamihigashi 4-chome Hirano-ku, Osaka-sh, Osaka 02, 〒5470002, JP)
アイエヌジ商事株式会社 (〒02 大阪府大阪市平野区加美東４丁目３番４７号 Osaka, 〒5470002, JP)
アイエヌジ商事株式会社 (〒02 大阪府大阪市平野区加美東４丁目３番４７号 Osaka, 〒5470002, JP)
International Classes:
B02C15/04; F23K1/00; F23K3/02
Attorney, Agent or Firm:
YANAGIDATE Takahiko (Taisei Patent Agent 6-15, Kawaramachi 4-chome Chuo-k, Osaka-shi Osaka 48, 〒5410048, JP)
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