Process for disaggregating waste materials which contain at...

Details Process for disaggregating waste materials which contain at... Process for disaggregating waste materials which contain at...

B - Operations, Transporting

29

B

B29B 17/02 (2006.01)

Patent

CA 2267105

A process is disclosed for disaggregating waste materials which contain at least partially reusable elements, mainly metals, plastics and cardboard. The waste materials are stirred in water by mechanical forces, large pieces, in particular plastic pieces, are coarsely crushed and soluble elements, in particular cardboard, are dissolved. The metallic elements are separated from the suspension as heavy materials, the remaining coarse solids, in particular plastics, are mechanically separated from the suspension, and the suspended fine solids are separated from the suspension by dewatering.

Ce procédé sert à désagréger des déchets qui contiennent des éléments au moins en partie réutilisables, notamment des métaux, des matières plastiques et du carton. On agite les déchets dans l'eau en exerçant une force mécanique, de façon à broyer grossièrement les pièces de grandes dimensions, notamment en plastique, et à dissoudre les éléments solubles, notamment du carton. Les éléments métalliques sont séparés de la suspension sous forme de matières lourdes, les autres substances solides grossières, notamment les matières plastiques, sont séparées mécaniquement de la suspension et les matières solides fines en suspension sont séparées de la suspension par déshydratation.

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