Method and apparatus for removing plastic from wood chips

Details Method and apparatus for removing plastic from wood chips Method and apparatus for removing plastic from wood chips

B - Operations, Transporting

07

B

B07B 13/00 (2006.01) B03B 1/02 (2006.01) B29B 17/02 (2006.01) D21B 1/02 (2006.01)

Patent

CA 2101705

Apparatus and process for removing unwanted foreign material from particulate material. The apparatus and process find particular application in the pulp and paper industry to remove contaminating plastic material from wood chips. The apparatus comprises a transporting conveyor for moving the particulate material between a inlet area and an outlet area and a vibrating motor for vibrating the conveyor to sort the particulate material and the foreign material. Heated rollers heated to a temperature sufficient to render the foreign material tacky are applied to the sorted material and cause the foreign material to adhere thereto such that the foreign material is extracted from the particulate material which is delivered to the outlet area.

Appareil et prodécé pour éléminer un corps étranger non désiré dans une substance particulaire. L'appareil et le procédé trouvent une application spéciale dans l'industrie des pâtes et papiers pour récupérer des matières plastiques contaminantes dans des copeaux de bois. L'appareil comprend une bande transporteuse pour acheminer la substance particulaire d'une aire d'entrée à une aire de sortrie et un moteur engendrant une vibration sur la bande transporteuse, afin de séparer les corps étrangers et la substance particulaire. Des rouleaux chauffés à une température suffisante pour rendre la substance plastique collante sont passés sur les matières. Les corps étrangers chauffés collent sur les rouleaux de sorte qu'ils sont donc séparés de la substance particulaire qui est amenée à la zone de sortie.

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