Abrégé

This invention relates to a separation system (10) for separating first solid particulate components from second solid particulate components having particle sizes which are smaller than that of the first solid components, wherein the first and second solid components are suspended in a liquid to form a mixture (12). The system (10) includes an endless screening belt/cloth (14) which is displaceable along a predetermined path and defines a separating region (18). The screening belt/cloth (14) defines a plurality of apertures (16) which apertures (16) are of a suitable size to permit the second solid components to pass therethrough and to impede the passage therethrough of the first solid components. The system (10) also includes a load management arrangement (67) which is configured to sense a change in load on the screening belt/cloth (14) and adjust at least one operating parameter of the system (10) in response to a change in load being sensed.

Classes IPC  ?

• B07B 1/42 - Mécanismes d'entraînement, dispositifs de régulation ou de commande, ou dispositifs d'équilibrage, spécialement adaptés aux tamis
• B07B 1/10 - Tamis sous forme de bande sans fin

Abrégé

This invention relates to a separation system (10) for separating first solid particulate components from second solid particulate components having particle sizes which are smaller than that of the first solid components, wherein the first and second solid components are suspended in a liquid to form a mixture (12). The system (10) includes an endless screening belt/cloth (14) which is displaceable along a predetermined path. The screening belt/cloth (14) defines a plurality of apertures (16) which apertures (16) are of a suitable size to permit the second solid components to pass therethrough and to impede the passage therethrough of the first solid components. The system (10) also includes at least one roller (17) over which the screening belt/cloth (14) extends in a separating region (18). The roller (17) includes a plurality of protuberances (26) which protrudes from a body (22) thereof. The protuberances (26) are configured mechanically to engage with at least some of the apertures (16) of the screening belt/cloth (14) in order to break the surface tension of the mixture (12) provided on the separating region (18).

Classes IPC  ?

• B07B 1/10 - Tamis sous forme de bande sans fin
• B07B 1/52 - Nettoyage par des brosses ou racloirs

Abrégé

This invention relates to a separation system (10) for separating first solid particulate components from second solid particulate components having particle sizes which are smaller than that of the first solid components, wherein the first and second solid components are suspended in a liquid to form a mixture (12). The system (10) includes a first separating arrangement (11); and a second separating arrangement (13). The second separating arrangement (13) includes an endless screening belt/cloth (14) which is displaceable along a predetermined path and which defines a plurality of apertures (16) which apertures (16) are of a suitable size to permit the second solid components to pass therethrough and to impede the passage therethrough of the first solid components. The screening belt/ cloth (14) has a separating region (18) and the first separating arrangement (11) is configured to receive the mixture (12), to at least partially separate the first solid components from the second solid components in the mixture (12) and to feed the at least partially separated mixture (12) onto the separating region (18).

Classes IPC  ?

• B07B 1/10 - Tamis sous forme de bande sans fin

Abrégé

A method of shear-thinning a slurry includes transferring slurry to be shear-thinned from 5 a primary vessel or reservoir (14) to a secondary vessel or reservoir (18), withdrawing at least a portion of the slurry in the secondary vessel or reservoir (18) by means of a pump or motive device (24) as a shear device thereby shear-thinning the withdrawn slurry, and returning or recycling at least a portion of the shear-thinned slurry back to the secondary vessel or reservoir (18). The slurry is withdrawn through an outlet (22) 10 from the secondary vessel or reservoir (18) and is returned to the secondary vessel or reservoir (18) through an inlet (36) into the secondary vessel or reservoir (18) with the inlet (36) being spaced from the outlet (22). The returned shear-thinned slurry has a reduced yield stress compared to slurry in the primary vessel or reservoir (14) and the returned shear-thinned slurry is allowed to mix in the secondary vessel or reservoir (18) 15 with slurry transferred from the primary vessel or reservoir (14) thereby to lower the overall yield stress of slurry in the secondary vessel or reservoir (18). Some of the slurry in the secondary vessel or reservoir (18) with the lower overall yield stress is transferred away.

Classes IPC  ?

• B01D 21/24 - Mécanismes d'alimentation ou d'évacuation pour bacs de décantation
• C02F 11/12 - Traitement des boues d'égoutDispositifs à cet effet par déshydratation, séchage ou épaississement