B - Operations – Transporting – 02 – C
Patent
B - Operations, Transporting
02
C
92/43
B02C 7/12 (2006.01) D21D 1/24 (2006.01) D21D 1/26 (2006.01) D21D 1/30 (2006.01)
Patent
CA 1329033
ABSTRACT OF THE DISCLOSURE A refiner for producing mechanical pulp has greater spacing between bars of the refiner grinding elements than is conventional. The grooves between the bars have a sloping bottom, making an angle of about 1-30° (preferably 5-20°) with respect to a straight line between the bars. The width of the grooves is about 10-50 mm. The relative rotation of the refiner elements (whether disks, cylindrical, or conical) with respect to each other results in sequential refining: a moving tension field, with successive compressions before impacts, and expansions, achieving increased fiber flexibility, more fiber rolling motion, and less fiber cutting. Pulp produced has increased fiber flexibility yet maintains a high content of long fibers, and higher refiner capacity also ensues. Also, the refiner of the invention can be used to mix treatment chemicals -- such as bleaching chemicals in liquid form -- into kraft pulp at high consistency (e.g. about 30-55%).
612723
Fetherstonhaugh & Co.
Kamyr Ab
LandOfFree
Refiner element pattern achieving successive compression... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Refiner element pattern achieving successive compression..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Refiner element pattern achieving successive compression... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1237970