Patent Document ID: 20030116661
Application ID: 10308439
Patent Flag: 0

Claim One:
1. A method of regulating sorting systems, in particular multi-stage sorting systems, in paper production, in which the fiber suspension (S) respectively supplied to a sorting stage is separated into at least two fractions, namely a fine fraction (F) and a coarse fraction (G), and at least one portion of a coarse fraction is again sorted and at least the thereby obtained fine fraction is returned to the sorting process, characterized in that, at each sorting stage ( 1, 9, 15 ) of the sorting system, the mass flows at the input side and at the output side are determined by online measurement and/or by calculation and the values obtained are supplied to a processor ( 10 ) associated with the sorting system for mathematical modeling and state regulating of the sorting system; and in that the output side mass flows of the sorters ( 1, 9, 15 ) and/or selectable machine parameters of the sorting system are influenced in dependence on pre-settable target parameters such as production, efficiency, fiber loss and the like.