Method for deflocculating and chemically loading fibers in a fiber suspension with calcium carbonate
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United States of America Patent
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Oct 29, 2002
Issued Date -
N/A
app pub date -
Jun 28, 2000
filing date -
Aug 6, 1998
priority date (Note) -
Expired
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Abstract
An apparatus for continuously loading fibers in a fiber suspension with a chemical compound includes a deflocculating vessel having an interior chamber, a fluid inlet connected with the interior chamber, a fluid outlet connected with the interior chamber, and a high shear imparting device disposed within the interior chamber for imparting high shear forces to and thereby deflocculating the fiber suspension. A mixing container has an interior compartment, a fluid inlet connected with both the interior compartment and the fluid outlet of the deflocculating vessel, a fluid outlet connected with the interior compartment, and a low shear imparting device within the interior compartment for imparting low shear forces to the fiber suspension. A gas supply is connected with the interior chamber of the deflocculating vessel and/or the interior compartment of the mixing container. The gas supply is configured for supplying a gas to and pressurizing each of the deflocculating vessel and the mixing container.
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