Process for the selective separation, and for the...

B - Operations – Transporting – 03 – B

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B03B 5/28 (2006.01) B03B 5/30 (2006.01) B03B 5/44 (2006.01)

Patent

CA 2737858

Process for the selective separation, and for the simultaneous increase in purity, of two spent, fragmented, synthetic organic materials having different densities, mixed together or mixed with various contaminating materials to be eliminated, by means of dense aqueous media, each aqueous medium of which has a chosen density ds as threshold for separating said organic materials and contaminants, characterized in that the process comprises: a) a step of separating the mixture into two streams, a supernatant stream (a1) and a settled stream (a2); b) a step of separating the components of the supernatant stream (a1), by eliminating the supernatant fraction and collecting the settled fraction formed from the fragments of the first recyclable spent synthetic organic material; c) a step of separating the components of the settled stream (a2) by collecting the supernatant fraction and eliminating the settled fraction; and d) a step of separating the components of the supernatant stream by eliminating the supernatant fraction and collecting the settled fraction formed from the fragments of the second recyclable spent synthetic organic material.

Procédé de séparation sélective et simultanément d'augmentation de pureté de deux matériaux organiques de synthèse, usagés, fragmentés, de densité distincte, en mélange entre eux et en mélange avec des matériaux contaminants divers à éliminer, au moyen de milieux aqueux denses, dont chaque milieu aqueux à une densité choisie ds. comme seuil de séparation desdits matériaux organiques et contaminants, caractérisé en ce que devient qui se caractérise en ce qu'il comporte : a) une étape de séparation du mélange en deux flux, l'un surnageant (a1) l'autre décantant (a2); b) une étape de séparation des composés du flux surnageant (a1), en éliminant le surnageant et en recueillant le décantant formé des fragments du premier matériau organique de synthèse usagé recyclable c) une étape de séparation des composés du flux décantant (a2) en recueillant le surnageant et en éliminant le décantant, d) Une étape de séparation des composés du flux surnageant (c) en éliminant le surnageant et en recueillant le décantant formé des fragments du deuxième matériau organique de synthèse usagé recyclable.

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