Method and device for recycling tyres

B - Operations – Transporting – 26 – D

Patent

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Details

B26D 1/00 (2006.01) B24C 1/04 (2006.01) B26F 3/00 (2006.01) B29B 17/02 (2006.01)

Patent

CA 2383585

The invention concerns a method for cutting up tyres with a view to recycling them, which consists in cutting the tread (1) to separate if from the two sidewalls (2, 3) with a high pressure water jet. The invention is characterised in that the tyre is cut from the inside along a radial direction and in a liquid medium such as water. The method consists in cutting the two edges of the tread (1) so as to produce a bevel (30). The invention also concerns a method for recycling tyres in order to recover the pure rubber gum comprising a step which consists in pulverizing the bits of tyres with high pressure water jet loaded with very fine grains of an abrasive material above a vat containing a liquid, so as to obtain rubber particles with dimension not more than 12 micrometers and a step which consists in sorting out by flotation the resulting rubber particles recuperating particles free of impurities floating on the liquid and a diffusing device for implementing said method.

Procédé de découpe de pneus en vue de leur recyclage, dans lequel on découpe la bande de roulement (1) pour la séparer des deux flancs (2, 3) au moyen d'un jet d'eau à haute pression, caractérisé en ce que la découpe est effectuée à partir de l'intérieur du pneu selon une direction radiale et dans un milieu liquide tel que de l'eau. On découpe les deux bords de la bande (1) de manière à réaliser un chanfrein (30). L'invention concerne également un procédé de recyclage de pneus pour la récupération de gomme pure de caoutchouc comprenant une étape de pulvérisation de morceaux de pneu par des jets d'eau à haute pression chargés de grains de matière abrasive très fins au-dessus d'un bac contenant un liquide, de manière à obtenir des particules de caoutchouc de dimensions inférieures ou égales à 12 micromètres et une étape de tri par flottation des particules de caoutchouc obtenues en récupérant les particules exemptes d'impuretés qui flottent sur le liquide et un dispositif diffuseur pour la mise en oeuvre de ce procédé.

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