Apparatus and method for improving density uniformity of a fluidized bed medium, and/or for improving material fluidized bed sorting
This patent describes an apparatus for providing a fluidized bed to effect a separation of a mixture of articles having at least a first density and a second density that is greater than the first density into separate groups. It comprises an inclined channelization means having input and output ends and otherwise enclosed along the length of the sides and bottom thereof; medium feed means for supplying to the input end of the channelization means a fluidization medium from which to create the fluidized bed in the channelization means; pneumatic means for forcing gas upwardly through the fluidization medium in the channelization means to create from the fluidization medium a fluidized bed; and vertical oscillation means for uniformly imparting to the entire inclined channelization means essentially only a vertical oscillatory movement of selected frequency so that there is no significant horizontal movement imparted to the fluidized bed.
- Assignee:
- SDDM, Inc., Pocotello, ID (United States)
- Patent Number(s):
- US 5118409; A
- Application Number:
- PPN: US 7-571136
- OSTI ID:
- 7115578
- Resource Relation:
- Patent File Date: 21 Aug 1990
- Country of Publication:
- United States
- Language:
- English
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