Patent ID: 7566382
Filing Date: 2009-07-28
Classification: D21F,D21G

Abstract:
1. A method for controlling short circulation in a paper machine, the method comprising: (a) diluting with white water of a high-consistency fiber-containing pulp to be conveyed to the short circulation; (b) feeding the diluted high-consistency fiber-containing pulp diluted at stage (a) into a headbox and further onto a wire for manufacturing paper; (c) separating white water from the diluted high-consistency fiber-containing pulp fed onto the wire; (d) conveying the white water separated at stage (c) to stage (a), (e) determining an amount of fiber-based fines in the high-consistency fiber-containing pulp based on a consistency measurement carried out in the high-consistency fiber-containing pulp, and (f) controlling at least one property of the diluted high-consistency fiber-containing pulp to be conveyed to the headbox wherein the controlling is based on the determined amount of fiber-based fines in the high-consistency fiber-containing pulp.