Method and system for wastepaper pulping

Details Method and system for wastepaper pulping Method and system for wastepaper pulping

D - Textiles, Paper

21

B

D21B 1/32 (2006.01) D21B 1/34 (2006.01) D21C 5/02 (2006.01)

Patent

CA 2135164

2135164 9420669 PCTABS00033 The invention concerns a method of digesting recycled paper at a concentration between 8 and 15 % in a closed container, supplying gas or steam at an overpressure between 0.2 and 4 bar and at temperatures between 90 and 150 ·C and subsequently diluting to a concentration between 3 and 5 % and separating the usable material from the unusable by mixing in a rotating perforated-sheet drum - preferably with a horizontal axis - into one end of which the digested recycled-paper suspension is blown.

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