Refining element
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United States of America Patent
Stats
-
Dec 9, 1997
Grant Date -
N/A
app pub date -
Nov 8, 1996
filing date -
Jun 29, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Apparatus for refining lignocellulose-containing material is disclosed including a pair of opposed refining disks defining a refining gap for the lignocellulose-containing material, at least one of the refining disks including an outer refining zone section which includes three refining zones including radially extending bars and corresponding radially extending grooves in which the first and third refining zones have a different bar density than the intermediate or second refining zone. Apparatus is also disclosed which includes a pair of opposed refining surfaces in which each disk refiner includes a pair of refining zones with one of each pair on each disk having a different bar density, and with the two zones being radially offset so that the like refining zones in each disk do not overlap with each other.
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