Apparatus for gas bubble flotation
Patent 5520806 Issued on May 28, 1996. Estimated Expiration Date: 
January 27, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 27, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2920763 3015396 3117082 3809240 Flotation apparatus for flotation of fibrous stock suspension recovered from waste paper Apparatus for continuous purification of liquids Patent #: 5176835 InventorApplicationNo. 378817 filed on 01/27/1995US Classes:210/221.2, And gas injecting means other than by mechanical agitation210/703, Effecting flotation210/704Including chemical addition (with or without bouyancy gas)ExaminersPrimary: Lithgow, Thomas M.Attorney, Agent or FirmForeign Patent References
International ClassC02F 001/24Foreign Application Priority Data1994-03-03 DEAbstractAn apparatus for gas bubble flotation comprises an angular flotation tank (1a, 1b), at least one liquid inlet (2a, 2b) for a liquid containing suspended matter and a liquid admixed with gas bubbles, in which apparatus at least one liquid inlet (2a, 2b) is arranged in the vicinity of at least one flotation tank corner. Preferably, the flotation tank has a square cross section. This permits optimal utilization of the available space, and results in a continuously decreasing flow velocity and thus an improved flotation effect.Other References
Field of SearchRECIRCULATIONSerially connected distinct treating or storage units With outlet at surface, e.g., froth flotation, etc. And gas injecting means other than by mechanical agitation Material supply distributor Heavier constituent trap, chamber, or recess Scum sediment removal Effecting flotation Including chemical addition (with or without bouyancy gas) | |
