B - Operations – Transporting – 01 – F
Patent
B - Operations, Transporting
01
F
259/34
B01F 11/02 (2006.01) B01F 5/10 (2006.01) B01J 19/10 (2006.01) B01F 1/00 (2006.01) B01F 3/08 (2006.01) B01F 3/12 (2006.01)
Patent
CA 1110227
ABSTRACT OF THE DISCLOSURE Apparatus for the treatment of materials by the appli- cation thereto of ultrasonic longitudinal pressure oscillations, for example, for dispersing or emulsifying or dissolving or mixing or deagglomerating consists of an enclosure having an interior with two closely-spaced walls at least one of which is made to oscillate at ultrasonic frequencies, or otherwise impart such oscillations to the interior, for example, by ultrasonic tranducers mounted on the wall exterior. The spacing between the walls is such that the longitudinal pressure oscillations produced at the oscillating wall are reflected by the other wall, preferably several times, before they are attenuated to a negligible value. The wall is made as thin as possible and in its vibrating causes Doffler effects that avoid standing waves. Pre- ferably the other wall also vibrates. The distance between the inner surfaces of the two walls is not more than about 1 inch (2.5cm). The material to be treated preferably is fed to the enclosure interior under pressure from a storage container and is re-circulated until the operation is complete. The invention also comprises processes for the treatment of materials using such oscillations. The transducers used may operate at different frequencies so that the material is subjected to different frequencies, and the frequency may increase in the direction of flow of the material through the apparatus.
273037
Hirons & Rogers
Micron Engineering Inc.
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