Fiber Preparation

The invention relates to a process for the formation and treatment of a pulp suspension (1) made of cellulose and water， which is suitable for the production of paper webs or paper web layers， the pulp suspension (1) being transferred from a pulp chest (2) via several treatment stages to a plurality of storage stores ( 3.4) is performed. A high strength of the paper web should be made possible at the lowest possible cost by that the pulp suspension (1) is cleaned after the pulp chest (2) in a cleaning stage (5) and in a subsequent fractionation stage (6) into a short fiber fraction (7) with a high proportion of short fibers and a long fiber fraction (8) is divided with a high proportion of long fibers and both fractions (7，8) are then each led through several dewatering stages (9， 10， 11， 12) into at least one storage tank (3， 4).