THE METHOD OF FRACTIONATION OF WASTE PAPER STOCK DURING DEFIBERING AND SEPARATE FRACTIONS TREATMENT

摘要

The subject of the invention is the method of fractionation of waste paper stock during defibering and separate treatment of fractions of high flexibility in selection of operating parameters which allows various types of raw materials of diverse defibering properties to be adjusted to, and which is at the same time energy-efficient, that is an important precondition in its usage in small paper mills for whom it is mainly designed. The process of waste paper defibering with its simultaneous sorting and cleaning is gradually performed during waste paper recycling. First, waste paper is disintegrated in the pulper into the form of suspension that obtains the ability to flow to other machines and devices. The machines and devices need to continue the defibering process - mainly of paper flakes and separation of heavy and light contaminants, for example foil.