Method for producing calcium carbonate during formation of a fibrous web
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United States of America Patent
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Oct 7, 2014
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app pub date -
Sep 10, 2012
filing date -
Mar 10, 2010
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Abstract
A method for production of calcium carbonate in a target suspension of a fibrous web forming process of a fibrous web machine, wherein the calcium carbonate is produced in a reactor, the method includes: injecting a chemical including carbon dioxide or lime milk through an injection mixer to the target suspension flowing through the reactor; allowing the chemical including to react while in the target suspension to form calcium carbonate crystals, and inhibiting precipitation of the chemical or a reaction product of the chemical on a surface of or in the reactor by application of an electric or magnetic field to or proximate to the surface along a region of the surface adjacent to the reaction involving the chemical.
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