Spare part for disc refiners for the production of paper
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United States of America Patent
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Oct 28, 2014
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app pub date -
Aug 5, 2011
filing date -
Aug 6, 2010
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Abstract
A spare part for disc refiners with a stator and/or rotor used in a disc refiner for low consistency pulp and paper refining with a dry fiber residue between 2% and 6%. The stator and/or rotor each comprise a disc-shaped metallic element with a refining blade surface having alternating bars and grooves. The rotor is designed to be driven and rotated around its own axis of rotation which passes through the center of the disc-shaped element so that the rotor bars perform a rotary movement in front of the stator bars with a suitable air gap in between. The blade surfaces or pattern have a pre-set angle greater than 0° with respect to a plane perpendicular to the rotor axis of rotation. This enables advantages in terms of the quantity and the quality of the refined product, and the potential to reduce the energy consumed.
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