Screen assembly and method for screening

B - Operations – Transporting – 07 – B

Patent

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Details

B07B 1/48 (2006.01) B01D 33/03 (2006.01) B07B 1/46 (2006.01)

Patent

CA 2472444

A method for screening with a screen assembly (10), the screen assembly comprising screening material having non-flat areas of screening material therein, the non-flat areas of screening material between lines of glue (13) gluing together a plurality of layers (11, 12) of screening material, the plurality of glued-together layers of screening material secured to a frame, the method comprising the steps of mounting the screen assembly (10) on a vibratory separator, the vibratory separator located in an environment at an ambient temperature, vibrating the screen assembly with the vibratory separator for a period of time, feeding material to be treated onto the screen assembly, the material to be treated at a material temperature above the ambient temperature, the period of time of such a temporal length and the material temperature of such a temperature to effect flattening of the non- flat areas of screening material.

L'invention concerne un procédé de criblage au moyen d'un ensemble de criblage (10) qui comprend un matériau de criblage comportant des zones non plates. Ces zones non plates de matériau de criblage se trouvent entre des lignes de colle (13) collant ensemble une pluralité de couches (11, 12) de matériau de criblage, cette pluralité de couches assemblées étant fixée sur un cadre. Le procédé de l'invention comprend les opérations suivantes : monter l'ensemble de criblage (10) sur un séparateur vibrant placé dans un environnement à température ambiante ; faire vibrer l'ensemble de criblage au moyen du séparateur vibrant pendant un laps de temps donné ; mettre le matériau à traiter sur l'ensemble de criblage, ce matériau étant à une température supérieure à l'ambiante. Le laps de temps est de longueur telle et la température du matériau est telle qu'ils agissent sur l'aplatissement des zones non plates du matériau de criblage.

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