Overflow launder

Details Overflow launder Overflow launder

B - Operations, Transporting

03

B

B03B 11/00 (2006.01)

Patent

CA 2521067

An overflow launder for a separation cell where particles are fluidised and rise to the top of the cell, has a primary trough (1) surrounding the rim of the cell (2), and an array of secondary troughs (4) extending across the fluid surface from the side (5) of the rim to the opposite side (6). Fluidised particles can report directly to the secondary troughs (4) without travelling across the surface of the cell, reducing the incidence of fallback. Alternative configurations with radial secondary troughs and external and/or internal primary troughs are also described.

L'invention concerne une goulotte de trop-plein pour une cellule de séparation dans laquelle les particules sont fluidisées et s'élèvent au sommet de la cellule. Cette goulotte comporte une cuve primaire (1) entourant le bord de la cellule (2), et une série de cuves secondaires (4) traversant la surface fluidique d'un côté (5) du bord (5) au côté opposé (6). Les particules fluidisées peuvent aller directement vers les cuves secondaires (4) sans traverser la surface de la cellule, réduisant ainsi le risque de retour. La présente invention porte également sur des configurations alternatives comprenant des cuves secondaires radiales et des cuves primaires externes et/ou internes.

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