A REFINER APPARATUS AND A METHOD FOR REFINING CELLULOSIC MATERIAL
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United States of America Patent
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Issued Date -
Jun 15, 2017
app pub date -
Feb 6, 2015
filing date -
Feb 11, 2014
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
The present invention regards a refiner plate segment (1) for a disc-type refiner apparatus (30), adapted to grind a saturated cellulosic material (M) in a refining gap (17) defined by opposed discs (20) during use of the apparatus (30), the material being moved from a refiner inlet opening (21) towards an outer edge (7) of the segment (1). The outer edge (7) of the segment (1) comprises a barrier arrangement (15) to increase the pressure in the refining gap (17) for retaining the liquid phase out to said outer edge (7). The present invention also regards a method of refining a saturated cellulosic material (M) in a refining gap (17) defined by two opposed discs (20) of a disc arrangement.
First Claim
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