Methods for beating pulp, methods for treating process waters, and methods for producing pulp and paper
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United States of America Patent
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Jul 22, 2014
Grant Date -
Sep 22, 2011
app pub date -
May 23, 2011
filing date -
Feb 9, 2005
priority date (Note) -
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Abstract
The first invention aims to provide a method for preparing stiffer bulky pulp at a freeness level comparable to that obtained by mechanical treatments to improve the bulkiness of product paper by searching for a method capable of adjusting freeness while suppressing damage to pulp fibers and internal fibrillation in a process for producing pulp. The second invention aims to strip contaminants deposited on pulp fibers and/or inorganic particles to reduce adhesion of the contaminants and decrease microorganisms in a treatment of process water containing long pulp fiber fractions used in a process for producing pulp and paper, thereby clarifying process water and thus preparing high-quality pulp and paper.
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