Liquid carton waste material recycling process and apparatus...

C - Chemistry – Metallurgy – 02 – F

Patent

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C02F 11/06 (2006.01) C02F 1/00 (2006.01) C22B 1/00 (2006.01) C22B 7/00 (2006.01) C22B 11/02 (2006.01) C22B 21/00 (2006.01) D21B 1/32 (2006.01) D21C 9/02 (2006.01) D21H 17/01 (2006.01)

Patent

CA 2339851

Process and apparatus for recycling of liquid carton waste material or other similar waste material which includes fibrous material, metal and plastic material. The process including following steps: (a) introducing the waste material and a slushing liquid, typically water, into a pulper (14) or other similar slushing apparatus for slushing of the waste material and defibration of the fibrous material therein, (b) separating the waste material treated in step (a) in a separator (16) into a fiber suspension (18) including defibrated fibrous material and a reject portion (22) including metal and plastic material, and (c) cleaning the fiber suspension of step (b) and recovering the fibrous material therein for further use, in e.g. board or paper. The process includes following further steps: (d) introducing the reject portion from step (b) into a fluidized bed gasifier (38), for gasification of plastic material therein, and (e) separating in a separator (56) metal, typically Al-material, from gas produced in step (d).

Procédé et dispositif servant à recycler des cartons usagés ayant contenu des liquides, ou des déchets semblables, composés de matériaux fibreux, de métaux et de matière plastique. Ce procédé consiste à: introduire le matériau usagé et un liquide de trituration, en principe de l'eau, dans une pulpeuse (14) ou dans un autre appareil de trituration de même type afin de triturer le matériau usagé et de défibrer le matériau fibreux qu'il contient; (b) séparer le matériau usagé traité à l'étape (a) dans un séparateur (16) en une suspension de fibres (18) comprenant le matériau fibreux défibré et une partie de rebut (22) comprenant les métaux et la matière plastique; (c) nettoyer la suspension de fibres de l'étape (b) et récupérer le matériau fibreux qu'elle contient afin de l'utiliser ultérieurement, par exemple, dans du carton ou du papier. Ce procédé consiste également à: (d) introduire la partie de rebut de l'étape (b) dans un gazéificateur à lit fluidisé (38) et (e) séparer dans un séparateur (56) le métal, normalement de l'aluminium, du gaz produit à l'étape (d).

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