METHOD FOR MANUFACTURING MECHANICAL PULP AND USE OF THE MECHANICAL PULP
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United States of America Patent
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Issued Date -
Sep 8, 2011
app pub date -
Sep 8, 2009
filing date -
Sep 10, 2008
priority date (Note) -
Abandoned
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Abstract
A method for treating mechanical pulp. Resinous mechanical pulp is brought into process in a process water flow. The resinous pulp is ozonated at a temperature between 80 and 87° C. and at pH less than 4. The pH of the pulp is adjusted after the ozonation process to correspond to the pH required in bleaching. The pulp is bleached.
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