METHOD FOR LOADING A FIBROUS STOCK SUSPENSION AND ARRANGEMENT TO IMPLEMENT THE METHOD.
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United States of America Patent
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Issued Date -
Mar 29, 2007
app pub date -
Sep 28, 2004
filing date -
Oct 31, 2003
priority date (Note) -
Abandoned
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Abstract
Method for loading a fibrous stock suspension which contains cellulose fibers with calcium carbonate, comprising the following process steps: Adding calcium hydroxide in liquid or dry form, or calcium oxide into the fibrous stock suspension, Adding of gaseous carbon dioxide into the fibrous stock suspension, Precipitation of calcium carbonate through the carbon dioxide and Refining of the fibrous stock suspension during the loading process and washing of the fibrous stock suspension after the crystallizing process and/or the refining process and/or during the refining process and/or after the refining process.
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