| 摘要 |
An apparatus for treating a fibrous material, e.g. for fiberizing and screening of waste paper, comprises a rotating drum which is provided with at least one partially perforated mantle and is divided into consecutive treating zones by means of a partition wall or walls. In connection with the partition wall there is provided a lifting structure which has an adjustable lifting capacity for transporting the material to be treated to the next treating zone through an opening in the partition wall.
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