公开(公告)号：EP1131161A1

公开(公告)日：2001-09-12

申请号：EP99958871.8

申请日：1999-11-11

申请人： J & L Fiber Services, Inc.

发明人： BARTELS, Patrick, J. ,  GARASIMOWICZ, Gregory, A. ,  LOFGREN, Mattias, E. ,  SAVUJARVI, Petri, K.

IPC分类号： B02C7/12 ,  D21D1/30

CPC分类号： D21D1/306 ,  B02C7/12

摘要： A refiner for refining material has a refiner disc arrangement whereby the outermost opposed refiner disc annuli (12, 14) have a particular corresponding refiner surface arrangement. A carrier element (30) has a mounting surface, a central axis, and defines a plane generally perpendicular to its axis of rotation. An annular first disc (12) is carried on the mounting surface concentrically relative to the central axis and has a first refiner surface facing outward relative to the mounting surface. A plurality of refiner bars protrudes axially from and extends generally radially along the refiner surface. A second carrier element (32) is spaced from and confronts the first carrier element (30) and has a second mounting surface thereon. An annular second disc (14) is carried on the second mounting surface concentrically relative to the central axis and has a second refiner surface confronting the first refiner surface. A plurality of second refiner bars protrudes axially from and extends generally radially along the second refiner surface. A refining plane (90) is defined between the first and second refining surfaces (12, 14) that is angled relative to the generally perpendicular plane (42) and provides a generally consistent width refining gap over a substantial portion of the refining surfaces.