Process and equipment for the screening of powders e.g. plutonium dioxide before conditioning, involves use of ultrasonic transducers mounted on a filter body supporting the screen

摘要

Process for the sieving of a powder comprises ultrasonic transducers fixed to the body of the apparatus are arranged perpendicular to the vertical axis passing through the screen to induce mechanical vibrations and assist in the passage of the powder through the screen. Process for the sieving of a powder in which the powder is passed across a screen (22) which is mechanically vibrated by at least one ultrasonic transducer (24) fixed to the filter body supporting the screen. An Independent claim is also included for the apparatus to effect the process.