Device and method for comminuting materials

B - Operations – Transporting – 02 – C

Patent

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B02C 19/00 (2006.01)

Patent

CA 2530447

The present invention provides a comminuting device that can generate an impact speed exceeding 200 ft/s (60.96 m/s), for example 1,500 ft/s (457.2 m/s), while consuming less energy than conventional comminuting devices, and thus, is more efficient than conventional comminuting devices. The comminuting device comprises a throwing wheel that generates a centrifugal and tangential force in the particles of material to accelerate the particles toward a desired impact speed, an impact rotor that includes an impact surface to fragment the particles when the particles collide with the impact surface, and a motor operable to power the impact rotor and the throwing wheel. To increase the impact speed of the particle, the impact surface is moved toward the particle as the particle exits the throwing wheel. Thus, the comminuting device can generate impact speeds that exceed the impact speeds generated by conventional comminuting devices and consequently fracture a particle into smaller pieces after one run.

La présente invention concerne un dispositif de dilacération pouvant générer une vitesse de choc supérieure à 200 ft/s, par exemple 1.500 ft/s, qui consomme moins d'énergie que les dispositifs de dilacération classiques, d'où une plus grande efficacité que ces derniers. Le dispositif de dilacération de l'invention comprend: un volant de lancement qui crée dans les particules de matériau une force centrifuge et tangentielle pouvant accélérer les particules et leur imprimer une vitesse de choc désirée; un rotor d'impact qui présente une surface d'impact pouvant fragmenter les particules lorsque celles-ci heurtent la surface d'impact; et un moteur qui alimente le rotor d'impact et le volant de lancement. Pour augmenter la vitesse de choc de la particule, la surface d'impact est déplacée vers la particule au moment où celle-ci quitte le volant de lancement. Ainsi, le dispositif de dilacération peut générer des vitesses de choc supérieures aux vitesses de choc produites par les dispositifs de dilacération classiques, et donc réduire en une seule passe une particule en morceaux plus petits.

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