CA2625843A1 - Centrifugal separator of heavier particulate materials from light particulate materials in a slurry using a ring in the collection recess - Google Patents
Centrifugal separator of heavier particulate materials from light particulate materials in a slurry using a ring in the collection recess Download PDFInfo
- Publication number
- CA2625843A1 CA2625843A1 CA 2625843 CA2625843A CA2625843A1 CA 2625843 A1 CA2625843 A1 CA 2625843A1 CA 2625843 CA2625843 CA 2625843 CA 2625843 A CA2625843 A CA 2625843A CA 2625843 A1 CA2625843 A1 CA 2625843A1
- Authority
- CA
- Canada
- Prior art keywords
- annular
- bowl
- recess
- base
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/02—Continuous feeding or discharging; Control arrangements therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B15/00—Other accessories for centrifuges
- B04B15/12—Other accessories for centrifuges for drying or washing the separated solid particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
Landscapes
- Centrifugal Separators (AREA)
Abstract
A centrifuge bowl for separating heavier particles from lighter particles and water comprises a conical lead-in wall leading of the bowl to a single recess or a pair of annular recesses at axially spaced positions. Each recess is generally V-shaped with an upper side wall, a lower side wall and a base. The base contains a plurality of angularly spaced valve controlled discharge ducts each having a mouth projecting through the base into the interior of the bowl for discharging the heavier particles in a continuous operation. The lead-in surface is stepped to cause tumbling of the flowing feed materials. The recess or recesses contain a concentrator ring which projects into the recess toward the base to reduce the amount of concentrate in the recess.
Claims (22)
1. An apparatus for separating intermixed particulate materials of different specific gravity in a slurry, comprising:
a centrifuge bowl having a base and a peripheral wall surrounding an axis passing through the base and generally upstanding from the base to an open mouth;
a mounting arrangement for rotating the bowl around the axis;
a feed duct having a discharge mouth adjacent the base of the bowl for feeding the slurry into the bowl during rotation of the bowl so that, during rotation of the bowl, the intermixed particulate materials flow over the peripheral wall of the bowl from the base for collection of heavier particulate materials on the peripheral wall and for discharge of the lighter particulate materials in the slurry from the open mouth;
a launder for collecting the lighter particulate materials in the slurry discharged from the open mouth;
an annular recess having a mouth at the peripheral wall over which the materials pass when fed from the supply duct as the materials pass to the open mouth of the bowl for collection of the heavier materials in the annular recess;
the annular recess comprising an annular upper wall and an annular lower wall each extending generally outwardly from the peripheral wall;
the annular upper wall and the annular lower wall including at least portions thereof which converge together toward a base of the annular recess spaced outwardly of the peripheral wall;
fluidizing openings in the annular recess at or adjacent the base at angularly spaced positions for fluidizing said heavier materials in the annular recess;
a plurality of valve controlled discharge ports in the annular recess at angularly spaced positions for generally radially outward discharge of collected heavier materials from the annular recess for substantially continuous operation;
and an annular ring extending continuously around the annular recess;
the annular ring having an annular inner portion mounted at the mouth of the annular recess leaving a space above and below the ring for passage of materials into the recess from the bowl;
the annular ring having an annular outer portion extending from the inner portion generally radially outwardly into the recess to a position between the converging portions of the walls of the recess;
wherein the outer portion has an outermost face facing outwardly to the base and the discharge ports therein with the outer portion being shaped and arranged relative to the recess that the space between the outermost face and the discharge ports is open to cause the outermost face to act as a control surface of the materials in the recess at the discharge port.
a centrifuge bowl having a base and a peripheral wall surrounding an axis passing through the base and generally upstanding from the base to an open mouth;
a mounting arrangement for rotating the bowl around the axis;
a feed duct having a discharge mouth adjacent the base of the bowl for feeding the slurry into the bowl during rotation of the bowl so that, during rotation of the bowl, the intermixed particulate materials flow over the peripheral wall of the bowl from the base for collection of heavier particulate materials on the peripheral wall and for discharge of the lighter particulate materials in the slurry from the open mouth;
a launder for collecting the lighter particulate materials in the slurry discharged from the open mouth;
an annular recess having a mouth at the peripheral wall over which the materials pass when fed from the supply duct as the materials pass to the open mouth of the bowl for collection of the heavier materials in the annular recess;
the annular recess comprising an annular upper wall and an annular lower wall each extending generally outwardly from the peripheral wall;
the annular upper wall and the annular lower wall including at least portions thereof which converge together toward a base of the annular recess spaced outwardly of the peripheral wall;
fluidizing openings in the annular recess at or adjacent the base at angularly spaced positions for fluidizing said heavier materials in the annular recess;
a plurality of valve controlled discharge ports in the annular recess at angularly spaced positions for generally radially outward discharge of collected heavier materials from the annular recess for substantially continuous operation;
and an annular ring extending continuously around the annular recess;
the annular ring having an annular inner portion mounted at the mouth of the annular recess leaving a space above and below the ring for passage of materials into the recess from the bowl;
the annular ring having an annular outer portion extending from the inner portion generally radially outwardly into the recess to a position between the converging portions of the walls of the recess;
wherein the outer portion has an outermost face facing outwardly to the base and the discharge ports therein with the outer portion being shaped and arranged relative to the recess that the space between the outermost face and the discharge ports is open to cause the outermost face to act as a control surface of the materials in the recess at the discharge port.
2. The apparatus according to Claim 1 wherein the outer portion of the ring has top and bottom walls which converge toward the base of the recess.
3. The apparatus according to Claim 2 wherein the top and bottom walls converge in steps.
4. The apparatus according to Claim 2 wherein the top and bottom walls are rounded.
5. The apparatus according to any one of Claims 2 to 4 wherein the top and bottom walls are arranged such that a spacing from the top and bottom walls from the converging portions increases in an outward direction.
6. The apparatus according to any one of Claims 2 to 5 wherein the top and bottom walls are symmetrical.
7. The apparatus according to any one of Claims 1 to 6 wherein the annular upper wall and the annular lower wall each include an inner portion inwardly of the converging portions which are substantially radial in direction and wherein the inner portion of the ring has top and bottom walls which are also substantially radial.
8. The apparatus according to any one of Claims 1 to 7 wherein the inner portion of the ring has an inwardly facing surface which is substantially flat.
9. The apparatus according to any one of Claims 1 to 8 wherein the inner portion of the ring has in inwardly facing surface which is substantially coplanar with the mouth at peripheral wall.
10. An apparatus for separating intermixed particulate materials of different specific gravity in a slurry, comprising:
a centrifuge bowl having a base and a peripheral wall surrounding an axis passing through the base and generally upstanding from the base to an open mouth;
a mounting arrangement for rotating the bowl around the axis;
a feed duct having a discharge mouth adjacent the base of the bowl for feeding the slurry into the bowl during rotation of the bowl so that, during rotation of the bowl, the intermixed particulate materials flow over the peripheral wall of the bowl from the base for collection of heavier particulate materials on the peripheral wall and for discharge of the lighter particulate materials in the slurry from the open mouth;
a launder for collecting the lighter particulate materials in the slurry discharged from the open mouth;
an annular recess having a mouth at the peripheral wall over which the materials pass when fed from the supply duct as the materials pass to the open mouth of the bowl for collection of the heavier materials in the annular recess;
the annular recess comprising an annular upper wall and an annular lower wall each extending generally outwardly from the peripheral wall;
the annular upper wall and the annular lower wall including at least portions thereof which converge together toward a base of the annular recess spaced outwardly of the peripheral wall;
fluidizing openings in the annular recess at or adjacent the base at angularly spaced positions for fluidizing said heavier materials in the annular recess;
a plurality of valve controlled discharge ports in the annular recess at angularly spaced positions for generally radially outward discharge of collected heavier materials from the annular recess for substantially continuous operation;
and an annular ring extending continuously around the annular recess;
the annular ring having an annular inner portion mounted at the mouth of the annular recess leaving a space above and below the ring for passage of materials into the recess from the bowl;
the annular ring having an annular outer portion extending from the inner portion generally radially outwardly into the recess to a position between the converging portions of the walls of the recess;
wherein the outer portion has top and bottom walls which converge toward the base of the recess.
a centrifuge bowl having a base and a peripheral wall surrounding an axis passing through the base and generally upstanding from the base to an open mouth;
a mounting arrangement for rotating the bowl around the axis;
a feed duct having a discharge mouth adjacent the base of the bowl for feeding the slurry into the bowl during rotation of the bowl so that, during rotation of the bowl, the intermixed particulate materials flow over the peripheral wall of the bowl from the base for collection of heavier particulate materials on the peripheral wall and for discharge of the lighter particulate materials in the slurry from the open mouth;
a launder for collecting the lighter particulate materials in the slurry discharged from the open mouth;
an annular recess having a mouth at the peripheral wall over which the materials pass when fed from the supply duct as the materials pass to the open mouth of the bowl for collection of the heavier materials in the annular recess;
the annular recess comprising an annular upper wall and an annular lower wall each extending generally outwardly from the peripheral wall;
the annular upper wall and the annular lower wall including at least portions thereof which converge together toward a base of the annular recess spaced outwardly of the peripheral wall;
fluidizing openings in the annular recess at or adjacent the base at angularly spaced positions for fluidizing said heavier materials in the annular recess;
a plurality of valve controlled discharge ports in the annular recess at angularly spaced positions for generally radially outward discharge of collected heavier materials from the annular recess for substantially continuous operation;
and an annular ring extending continuously around the annular recess;
the annular ring having an annular inner portion mounted at the mouth of the annular recess leaving a space above and below the ring for passage of materials into the recess from the bowl;
the annular ring having an annular outer portion extending from the inner portion generally radially outwardly into the recess to a position between the converging portions of the walls of the recess;
wherein the outer portion has top and bottom walls which converge toward the base of the recess.
11. The apparatus according to Claim 10 wherein the top and bottom walls converge in steps.
12. The apparatus according to Claim 10 wherein the top and bottom walls are rounded.
13. The apparatus according to any one of Claims 10 to 12 wherein the top and bottom walls are arranged such that a spacing from the top and bottom walls from the converging portions increases in an outward direction.
14. The apparatus according to any one of Claims 10 to 13 wherein the annular upper wall and the annular lower wall each include an inner portion inwardly of the converging portions which are substantially radial in direction and wherein the inner portion of the ring has top and bottom walls which are also substantially radial.
15. The apparatus according to any one of Claims 10 to 14 wherein the inner portion of the ring has in inwardly facing surface which is substantially flat.
16. The apparatus according to any one of Claims 10 to 15 wherein the inner portion of the ring has in inwardly facing surface which is substantially coplanar with the mouth at peripheral wall.
17. An insert member for use in an apparatus for separating intermixed particulate materials of different specific gravity in a slurry, the apparatus comprising:
a centrifuge bowl having a base and a peripheral wall surrounding an axis passing through the base and generally upstanding from the base to an open mouth;
a mounting arrangement for rotating the bowl around the axis;
a feed duct having a discharge mouth adjacent the base of the bowl for feeding the slurry into the bowl during rotation of the bowl so that, during rotation of the bowl, the intermixed particulate materials flow over the peripheral wall of the bowl from the base for collection of heavier particulate materials on the peripheral wall and for discharge of the lighter particulate materials in the slurry from the open mouth;
a launder for collecting the lighter particulate materials in the slurry discharged from the open mouth;
an annular recess having a mouth at the peripheral wall over which the materials pass when fed from the supply duct as the materials pass to the open mouth of the bowl for collection of the heavier materials in the annular recess;
the annular recess comprising an annular upper wall and an annular lower wall each extending generally outwardly from the peripheral wall;
the annular upper wall and the annular lower wall including at least portions thereof which converge together toward a base of the annular recess spaced outwardly of the peripheral wall;
fluidizing openings in the annular recess at or adjacent the base at angularly spaced positions for fluidizing said heavier materials in the annular recess;
a plurality of valve controlled discharge ports in the annular recess at angularly spaced positions for generally radially outward discharge of collected heavier materials from the annular recess for substantially continuous operation;
the insert member comprising an annular ring;
the annular ring being shaped and arranged so as to extend continuously around the annular recess;
the annular ring having an annular inner portion shaped and arranged so as to be mounted at the mouth of the annular recess leaving a space above and below the ring for passage of materials into the recess from the bowl;
the annular ring having an annular outer portion shaped and arranged so as to extend from the inner portion generally radially outwardly into the recess to a position between the converging portions of the walls of the recess;
wherein the outer portion has an outermost face facing outwardly to the base which is free from elements attached to the ring member.
a centrifuge bowl having a base and a peripheral wall surrounding an axis passing through the base and generally upstanding from the base to an open mouth;
a mounting arrangement for rotating the bowl around the axis;
a feed duct having a discharge mouth adjacent the base of the bowl for feeding the slurry into the bowl during rotation of the bowl so that, during rotation of the bowl, the intermixed particulate materials flow over the peripheral wall of the bowl from the base for collection of heavier particulate materials on the peripheral wall and for discharge of the lighter particulate materials in the slurry from the open mouth;
a launder for collecting the lighter particulate materials in the slurry discharged from the open mouth;
an annular recess having a mouth at the peripheral wall over which the materials pass when fed from the supply duct as the materials pass to the open mouth of the bowl for collection of the heavier materials in the annular recess;
the annular recess comprising an annular upper wall and an annular lower wall each extending generally outwardly from the peripheral wall;
the annular upper wall and the annular lower wall including at least portions thereof which converge together toward a base of the annular recess spaced outwardly of the peripheral wall;
fluidizing openings in the annular recess at or adjacent the base at angularly spaced positions for fluidizing said heavier materials in the annular recess;
a plurality of valve controlled discharge ports in the annular recess at angularly spaced positions for generally radially outward discharge of collected heavier materials from the annular recess for substantially continuous operation;
the insert member comprising an annular ring;
the annular ring being shaped and arranged so as to extend continuously around the annular recess;
the annular ring having an annular inner portion shaped and arranged so as to be mounted at the mouth of the annular recess leaving a space above and below the ring for passage of materials into the recess from the bowl;
the annular ring having an annular outer portion shaped and arranged so as to extend from the inner portion generally radially outwardly into the recess to a position between the converging portions of the walls of the recess;
wherein the outer portion has an outermost face facing outwardly to the base which is free from elements attached to the ring member.
18. The insert member according to Claim 17 wherein the outer portion of the ring has top and bottom walls which converge.
19. The insert member according to Claim 17 wherein the top and bottom walls converge in steps.
20. The insert member according to any one of Claims 17 to 19 wherein the inner portion of the ring has top and bottom walls which are substantially radial.
21. The insert member according to any one of Claims 17 to 20 wherein the inner portion of the ring has an inwardly facing surface which is substantially flat.
22. An insert member for use in an apparatus for separating intermixed particulate materials of different specific gravity in a slurry, the apparatus comprising:
a centrifuge bowl having a base and a peripheral wall surrounding an axis passing through the base and generally upstanding from the base to an open mouth;
a mounting arrangement for rotating the bowl around the axis;
a feed duct having a discharge mouth adjacent the base of the bowl for feeding the slurry into the bowl during rotation of the bowl so that, during rotation of the bowl, the intermixed particulate materials flow over the peripheral wall of the bowl from the base for collection of heavier particulate materials on the peripheral wall and for discharge of the lighter particulate materials in the slurry from the open mouth;
a launder for collecting the lighter particulate materials in the slurry discharged from the open mouth;
an annular recess having a mouth at the peripheral wall over which the materials pass when fed from the supply duct as the materials pass to the open mouth of the bowl for collection of the heavier materials in the annular recess;
the annular recess comprising an annular upper wall and an annular lower wall each extending generally outwardly from the peripheral wall;
the annular upper wall and the annular lower wall including at least portions thereof which converge together toward a base of the annular recess spaced outwardly of the peripheral wall;
fluidizing openings in the annular recess at or adjacent the base at angularly spaced positions for fluidizing said heavier materials in the annular recess;
a plurality of valve controlled discharge ports in the annular recess at angularly spaced positions for generally radially outward discharge of collected heavier materials from the annular recess for substantially continuous operation;
the insert member comprising an annular ring;
the annular ring being shaped and arranged so as to extend continuously around the annular recess;
the annular ring having an annular inner portion shaped and arranged so as to be mounted at the mouth of the annular recess leaving a space above and below the ring for passage of materials into the recess from the bowl;
the annular ring having an annular outer portion shaped and arranged so as to extend from the inner portion generally radially outwardly into the recess to a position between the converging portions of the walls of the recess;
wherein the outer portion has top and bottom walls shaped and arranged so as to converge.
a centrifuge bowl having a base and a peripheral wall surrounding an axis passing through the base and generally upstanding from the base to an open mouth;
a mounting arrangement for rotating the bowl around the axis;
a feed duct having a discharge mouth adjacent the base of the bowl for feeding the slurry into the bowl during rotation of the bowl so that, during rotation of the bowl, the intermixed particulate materials flow over the peripheral wall of the bowl from the base for collection of heavier particulate materials on the peripheral wall and for discharge of the lighter particulate materials in the slurry from the open mouth;
a launder for collecting the lighter particulate materials in the slurry discharged from the open mouth;
an annular recess having a mouth at the peripheral wall over which the materials pass when fed from the supply duct as the materials pass to the open mouth of the bowl for collection of the heavier materials in the annular recess;
the annular recess comprising an annular upper wall and an annular lower wall each extending generally outwardly from the peripheral wall;
the annular upper wall and the annular lower wall including at least portions thereof which converge together toward a base of the annular recess spaced outwardly of the peripheral wall;
fluidizing openings in the annular recess at or adjacent the base at angularly spaced positions for fluidizing said heavier materials in the annular recess;
a plurality of valve controlled discharge ports in the annular recess at angularly spaced positions for generally radially outward discharge of collected heavier materials from the annular recess for substantially continuous operation;
the insert member comprising an annular ring;
the annular ring being shaped and arranged so as to extend continuously around the annular recess;
the annular ring having an annular inner portion shaped and arranged so as to be mounted at the mouth of the annular recess leaving a space above and below the ring for passage of materials into the recess from the bowl;
the annular ring having an annular outer portion shaped and arranged so as to extend from the inner portion generally radially outwardly into the recess to a position between the converging portions of the walls of the recess;
wherein the outer portion has top and bottom walls shaped and arranged so as to converge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2625843A CA2625843C (en) | 2008-03-31 | 2008-03-31 | Centrifugal separator of heavier particulate materials from light particulate materials in a slurry using a ring in the collection recess |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2625843A CA2625843C (en) | 2008-03-31 | 2008-03-31 | Centrifugal separator of heavier particulate materials from light particulate materials in a slurry using a ring in the collection recess |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2625843A1 true CA2625843A1 (en) | 2009-09-30 |
| CA2625843C CA2625843C (en) | 2011-03-22 |
Family
ID=41161171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2625843A Active CA2625843C (en) | 2008-03-31 | 2008-03-31 | Centrifugal separator of heavier particulate materials from light particulate materials in a slurry using a ring in the collection recess |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2625843C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011011862A1 (en) * | 2009-07-29 | 2011-02-03 | Knelson Patents Inc. | Bowl structure for a centrifugal concentrator |
| RU2452579C2 (en) * | 2010-06-23 | 2012-06-10 | Владимир Михайлович Лепехин | Centrifugal concentrator |
| WO2016084022A1 (en) | 2014-11-26 | 2016-06-02 | Flsmidth A/S | Methods and apparatus for the continuous monitoring of wear and pressure in centrifugal concentrators |
| US9861915B2 (en) | 2011-09-27 | 2018-01-09 | Weir Minerals Australia Limited | Centrifugal screen apparatus |
-
2008
- 2008-03-31 CA CA2625843A patent/CA2625843C/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011011862A1 (en) * | 2009-07-29 | 2011-02-03 | Knelson Patents Inc. | Bowl structure for a centrifugal concentrator |
| EA022542B1 (en) * | 2009-07-29 | 2016-01-29 | Эф-Эл-Смидт А/С | Bowl structure for a centrifugal concentrator |
| RU2452579C2 (en) * | 2010-06-23 | 2012-06-10 | Владимир Михайлович Лепехин | Centrifugal concentrator |
| US9861915B2 (en) | 2011-09-27 | 2018-01-09 | Weir Minerals Australia Limited | Centrifugal screen apparatus |
| WO2016084022A1 (en) | 2014-11-26 | 2016-06-02 | Flsmidth A/S | Methods and apparatus for the continuous monitoring of wear and pressure in centrifugal concentrators |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2625843C (en) | 2011-03-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |