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US 6,475,384 B1Granted
Flotation reactor and method for flotation
AssigneeForschungszentrum Julich GmbH
InventorHorst Overath
Life of this patent
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Abstract
The invention relates to a flotation method and a flotation reactor. The invention provides a method and a device, wherein the formation of the gas bubbles needed for flotation are produced by catalytic reaction of a chemical substance, i.e. H2O2, thereby saving energy and reducing the number of compressors. Flocculation also occurs in a tangential flow in the funnel-shaped expansion (12) of an admission pipe (8) so that a flocculation basin with a stirrer is no longer required.
Claims19
A flotation reactor comprising:
- a flotation reactor housing having respective walls;
- inner and outer walls in said reactor defining between them a narrow upwardly extending flotation space opening into a wider outlet for flotated solids;
- at least one inlet for a flotation liquid and for flotatable solids communicating with said flotation space at a lower portion thereof whereby the flotation liquid and flotatable solids rise between said inner and outer walls in said space;
- means for introducing into said reactor housing a reactive liquid which flows along said walls and is catalytically activatable to liberate a flotation-promoting gas to effect flotation of said solids in said flotation liquid whereby flotated solids are formed;
- and
- a catalyst fixed to and coating at least some of said walls and capable of activating said reactive liquid to produce said flotation-promoting gas.
3 more elements
Dependencies are inferred from the claim text.