Method of dry separating fibers from paper making waste...

Details Method of dry separating fibers from paper making waste... Method of dry separating fibers from paper making waste...

B - Operations, Transporting

07

B

B07B 11/02 (2006.01) D21B 1/00 (2006.01)

Patent

CA 2160334

Provided are methods of dry recovering useable fiber from paper making sludge. In the methods, paper making sludge is dewatered and dried. The dewatered and dried sludge is then fiberized using a dry fiberizing machine into a fibrous material consisting of fibers and other material including fiber fines, clay, filler material and the like. The fibers in the fibrous material are then separated out in a sifting process. The separated fibers are then ready for use in paper making without further processing. The fiber fines and filler material separated from the fibers is also collected and can be used as filler material in other composite material applications.

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