Method and arrangement for production of pulp with improved quality properties

摘要

In a method and arrangement a low-consistency pulp suspension of known consistency and flow rate is fed to the intake side of a main pump 4, to whose pressure side a first multihydrocyclone unit 6 is connected for elimination of heavy contaminants, a second multicyclone unit 7 for elimination of light contaminants and a headbox 8 for a stuff chest or paper machine 9. In this case uninterrupted cleaning and pulp or paper manufacture without intermediate storage is obtained and the second multihydrocyclone unit raises the thickened pulp from a consistency suitable for cleaning to a higher consistency suitable for take-up on the screen, etc. <IMAGE>