Patent ID: 6413365
Filing Date: 2002-07-02
Classification: B01F,C01F,C01P,D21C,D21H

Abstract:
A method of loading fibers in a fiber suspension with calcium carbonate, comprising the steps of:providing a housing having an inlet and an accept outlet; providing a rotatable distribution member within said housing; providing a rotor and stator assembly within said housing radially outside of said distribution member; transporting a fiber suspension to said inlet, said fiber suspension including at least one of calcium oxide and calcium hydroxide; distributing said fiber suspension from said inlet using said rotatable distribution member; passing said fiber suspension through a toothed ring interposed between said distribution member and said rotor and stator assembly; supplying a reactant gas to a gas ring defined between said toothed ring and said rotor and stator assembly; passing said fiber suspension through said gas ring; forming calcium carbonate crystals in said fiber suspension within said gas ring; and distributing said calcium carbonate crystals in said fiber suspension using said rotor and stator assembly.