B - Operations – Transporting – 03 – B
Patent
B - Operations, Transporting
03
B
B03B 5/26 (2006.01) B03B 4/02 (2006.01) B03B 4/04 (2006.01) B03B 4/06 (2006.01) B03B 5/04 (2006.01) B03B 5/58 (2006.01)
Patent
CA 2481205
There is provided a pinched sluice apparatus for classification of a feed particle mixture into two or more factions, including a pinched sluice (12) with a sloping floor (14) and a pair of convergent side walls (16) forming a sluice channel which changes in cross-section from being shallow and wide at the inlet end (18) to being deeper and narrow at the discharge end (20). Elutriation fluid is introduced through the floor (14) and is passed through the bed (24), while the sluice is reciprocated (38) to induce alternating up and down acceleration of the sluice channel relative to the settling force (22, 68), such that classification is achieved by alternating differential acceleration and hindered settling of particles in the bed. A centrifugal version of the device is also disclosed.
L'invention concerne un appareil à vanne rétrécie destiné à la classification d'un mélange de particules d'alimentation comprenant au moins deux parties, notamment une vanne rétrécie (12) dotée d'un fond incliné (14) et d'une paire de parois latérales (16) convergentes, ceci formant un canal de vanne, qui varie en coupe transversale, peu profond et large à l'extrémité d'entrée (18) et plus profond et étroit à l'extrémité de décharge (20). Un fluide d'élutriation est introduit dans le fond (14) et passe par le lit (24), tandis que la vanne est alternée (38) pour induire une accélération alternant de haut en bas du canal de vanne en fonction de la force de décantation (22, 68), de sorte que la classification est effectuée au moyen de l'alternance de l'accélération différentielle et de la décantation entravée des particules dans le lit. L'invention concerne également une version centrifuge dudit dispositif.
Evans Deakin Pty Limited
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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