Flushing process for pigments

Details Flushing process for pigments Flushing process for pigments

C - Chemistry, Metallurgy

08

J

6/194, 400/7057

C08J 3/20 (2006.01) C09B 67/00 (2006.01)

Patent

CA 1150876

Abstract of the Invention This invention relates to a method for producing a pigment-organic vehicle product which comprises forcing an aqueous pulp of the pigment through a conduit and injecting the vehicle into the conduit and aqueous pulp. The mixture is then homogenized, subjected to further mixing and transferred to a traveling horizontal perforated surface whereby some of the water drains from the mixture through the perforations. The aqueous pulp. organic vehicle mixture is then forced through a cylindrical chamber having defined therein an axial opening of a diameter smaller than that of the chamber, and at least one second opening spaced from the axial opening. The mixture is forced through the chamber and axial opening by a rotating helical surface whereby the product is extruded through the axial opening and water is squeezed from the mixture. The water then exits from the chamber through the second opening.

367860

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