Application of complex-mode vibration-fluidized beds to the separation of granular materials of different density
OwnerArthur P. Fraasinventor
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Abstract
Opposite ends of a dry vibration-fluidized separator are moved with complex vibrations, including linear, whirl, linear plus whirl, oscillation, linear plus oscillation, pitch and roll. Near zero to large amplitudes up to about ±0.050 inches and low frequencies of about 30 Hz are used. Mixed particulate materials are fed into a first end and circulate across and along the separator in a shallow depth. More dense materials move linearly along a floor and are removed through an opening in a second end of the floor. The less dense materials flow over a weir at the second end of the separator.
Claims17
A vibration-fluidizing bed method of separating solid materials of different densities, comprising:
- providing a separator;
- vibrating the separator with complex vibrations;
- feeding mixed solid materials having different densities to the separator;
- establishing a fluidized flow of the materials in the separator with the complex vibrations;
- moving more dense materials upward in the separator with the complex vibrations;
- moving less dense materials along a bottom of the separator with the complex vibrations;
- flowing the more dense materials out of a conveyor from an upper portion of the separator;
- and
- discharging the less dense materials from a lower portion of the separator.
Dependencies are inferred from the claim text.