Patent ID: 6200417
Filing Date: 2001-03-13
Classification: D21F

Abstract:
A process for mixing suspensions having differing characteristics in a wet end of one of, a paper machine or a cardboard machine, and including an approach flow system which comprises at least one separator and at least one cleaner, the process comprising:piping of a first suspension in a mixing tube to form a main flow having a main flow direction in a longitudinal direction of the mixing tube, said first suspension including a suspension of a backwater of the paper machine; andinjecting at least two additional suspensions from the at least one separator and the at least one cleaner into the mixing tube, each of said at least two additional suspensions having a solid content different from that of the first suspension,wherein each of the at least two additional suspensions include one of accepted and rejected stock suspension from one of the at least one separator and the at least one cleaner.