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US 2011/0079563 A1Published application
Improvements in feedwells
AssigneeOutotec Oyj
InventorsRichard Triglavcanin, Darko Raskovic, Jian Dong Wang, Michael Andrew Brown
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AssigneeOutotec Oyj
InventorsRichard Triglavcanin, Darko Raskovic, Jian Dong Wang, Michael Andrew Brown
Estimating the term…
The invention provides several improvements in feedwells, one of which being a feedwell (100) comprising a mixing zone (49) for dissipating the kinetic energy of a fluid comprising pulp, a settling zone (50) for promoting flocculation of the pulp and at least one inclined deflecting element (101) for at least partially separating the mixing zone from the settling zone. Other improvements include a shelf (3) at least partially defining an inclined path (4) for removing material from the shelf into a feedwell chamber; at least two outlets (111, 112) arranged in a substantially concentric relationship with respect to each other; a portion (123) of a second conduit (121) varies in its cross-sectional size and/or shape so as to connect a feed inlet (110) to a first conduit (120); and a partition (133) for partially separating an outer mixing zone (131) and an inner settling zone (132).
A feedwell for a separation device, the feedwell comprising a mixing zone for dissipating the kinetic energy of a fluid comprising pulp, a settling zone for promoting flocculation of the pulp and a plurality of inclined deflecting element for at least partially separating the mixing zone from the settling zone, wherein each inclined deflecting element has an inner end and an outer end with respect to the feedwell, wherein one of the inner and outer ends is raised relative to the other of the inner and outer ends.
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The feedwell of claim 14, wherein the inner end is raised relative to the outer end.
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A feedwell for a separation device, the separation device having a thickening tank, the feedwell comprising a sidewall at least partially defining a feedwell chamber, a feed inlet for directing feed liquid into the feedwell chamber, an outlet disposed below the feed inlet to direct feed liquid in the chamber into the thickening tank, and a shelf at least partially defining an inclined path for removing material from the shelf into the feedwell chamber and inhibiting the build up of material thereon.
A feedwell for a separation device, the feedwell comprising an inlet for receiving a fluid comprising pulp, and at least two outlets for discharging fluid into the separation device, wherein the at least two outlets are arranged in a substantially concentric relationship with respect to each other.
A feedwell for a separation device, the feedwell comprising a feed inlet for receiving a fluid comprising pulp from a first conduit, and a second conduit for connecting the first conduit and the feed inlet in fluid communication, wherein the first conduit has a first cross-sectional size and/or shape, the feed inlet has a second cross-sectional size and/or shape different to the first cross-sectional size and/or shape, and a portion of the second conduit varies in its cross-sectional size and/or shape so as to connect the feed inlet to the first conduit such that the height of the feed inlet is less than the height of the first conduit.
A feedwell for a separation device, said feedwell comprising an outer mixing zone for dissipating the kinetic energy of a feed pulp, an inner settling zone for promoting flocculation of the pulp and a partition for partially separating the outer mixing zone and the inner settling zone, wherein the partition comprises one or more openings for releasing the feed pulp from the outer mixing zone into the inner settling zone and wherein one or more guiding elements for guiding the feed pulp from the outer mixing zone into the inner setline zone are associated with the one or more openings.
A method of separating pulp from a fluid, the method comprising the steps of:
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A method for inhibiting the build up of material on a shelf in a feedwell, the feedwell comprising a sidewall at least partially defining a feedwell chamber, a feed inlet for directing feed liquid into the feedwell chamber and an outlet disposed below the feed inlet to direct feed liquid in the chamber into a thickening tank, the method comprising the step of defining an at least partially inclined path with the shelf for removal of material therefrom into the feedwell chamber.
A method for discharging fluid comprising pulp from a feedwell into a separation device, the method comprising the steps of providing an inlet for receiving the fluid, providing at least two outlets for discharging the fluid into the separation device and arranging the at least two outlets in a substantially concentric relationship with respect to each other.
A method of feeding a fluid comprising pulp into a feedwell, comprising the steps of providing a feed inlet for receiving the fluid from a first conduit and providing a second conduit for connecting the first conduit and the feed inlet in fluid communication, wherein the first conduit has a first cross-sectional size and/or shape and the feed inlet has a second cross-sectional size and/or shape different to the first cross-sectional size and/or shape, the method further comprising varying a portion of the second conduit in its cross-sectional size and/or shape to fluidly connect the feed inlet to the first conduit such that the height of the feed inlet is less than the height of the first conduit.
A method for separating pulp from a fluid, comprising the steps of providing a feedwell, forming an outer mixing zone within the feedwell for dissipating the kinetic energy of the fluid, forming an inner settling zone in the feedwell for promoting flocculation of the pulp and disposing partition for partially separating the outer mixing zone and the inner settling zone wherein the method further comprises providing the partition with one or more openings for releasing the feed pulp from the outer mixing zone into the inner settling zone and providing one or more guiding elements associated with the one or more openings for guiding the feed pulp from the outer mixture zone into the inner settling zone.
Dependencies are inferred from the claim text.