Method for modifying papermaking sludge and products made...

Details Method for modifying papermaking sludge and products made... Method for modifying papermaking sludge and products made...

B - Operations, Transporting

29

C

B29C 33/38 (2006.01) C04B 18/24 (2006.01) D21H 17/01 (2006.01) D21H 11/14 (2006.01) D21H 21/08 (2006.01)

Patent

CA 2284544

Papermaking sludge can be modified to a modeling clay-like consistency by the addition of one or more dispersing agents, such as polyacrylamide. The modified papermaking sludge (1; 33) can be formed into a number of useful products, such as sheets (4; 40) or extruded products (43).

L'invention donne la possibilité de modifier des boues de papeterie pour leur donner la consistance d'argile modelable. Le procédé consiste alors à ajouter à ces boues des agents dispersants tels qu'un polyacrylamide. Les boues de papeterie ainsi modifiées (1, 33) peuvent être mises en forme pour donner divers produits utiles les que des produits en feuilles (4, 40) ou d'extrusion (43).

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