CA2461279A1 - Flotation machine rotor and method of operation - Google Patents
Flotation machine rotor and method of operation Download PDFInfo
- Publication number
- CA2461279A1 CA2461279A1 CA002461279A CA2461279A CA2461279A1 CA 2461279 A1 CA2461279 A1 CA 2461279A1 CA 002461279 A CA002461279 A CA 002461279A CA 2461279 A CA2461279 A CA 2461279A CA 2461279 A1 CA2461279 A1 CA 2461279A1
- Authority
- CA
- Canada
- Prior art keywords
- rotor
- flotation machine
- body portion
- aperture
- peripheral edge
- 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
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/16—Flotation machines with impellers; Subaeration machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/234—Surface aerating
- B01F23/2342—Surface aerating with stirrers near to the liquid surface, e.g. partially immersed, for spraying the liquid in the gas or for sucking gas into the liquid, e.g. using stirrers rotating around a horizontal axis or using centrifugal force
- B01F23/23421—Surface aerating with stirrers near to the liquid surface, e.g. partially immersed, for spraying the liquid in the gas or for sucking gas into the liquid, e.g. using stirrers rotating around a horizontal axis or using centrifugal force the stirrers rotating about a vertical axis
- B01F23/234211—Stirrers thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1493—Flotation machines with means for establishing a specified flow pattern
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
A flotation machine rotor (40), having a body portion (44) and an interior area (48) that is adapted to communicate with a gas source.
Claims (9)
1. A flotation machine rotor comprising:
a body portion defining an interior area adapted to communicate with a gas source;
at least one rotor blade projecting radially outwardly from said body portion;
at least one aperture defined by said body portion and in gaseous communication with said interior area, said aperture being positioned adjacent to said at least one rotor blade and being defined in-part by a lower peripheral edge;
at least one lip projecting radially outwardly from said lower peripheral edge so that, during operation of said rotor, solid particles forming part of a solid/liquid slurry, travel away from said body portion and in approximate alignment with said slot so that gas flowing from said aperture creates bubbles in said slurry that entrain at least a portion of said solid particles.
a body portion defining an interior area adapted to communicate with a gas source;
at least one rotor blade projecting radially outwardly from said body portion;
at least one aperture defined by said body portion and in gaseous communication with said interior area, said aperture being positioned adjacent to said at least one rotor blade and being defined in-part by a lower peripheral edge;
at least one lip projecting radially outwardly from said lower peripheral edge so that, during operation of said rotor, solid particles forming part of a solid/liquid slurry, travel away from said body portion and in approximate alignment with said slot so that gas flowing from said aperture creates bubbles in said slurry that entrain at least a portion of said solid particles.
2. A flotation machine rotor as defined by claim 1, wherein said aperture is a slot that extends in a longitudinal direction approximately perpendicular to a central axis defined by said rotor.
3. A flotation machine rotor as defined by claim 2, wherein:
said at least one rotor blade includes a plurality of rotor blades;
said slot includes a plurality of slots, each positioned between a pair of said rotor blades each of said slots being defined in-part by an upper peripheral edge and a lower peripheral edge; and wherein said at least one lip includes a plurality of lips, each adjacent to and projecting outwardly from said lower peripheral edge of one of said slots.
said at least one rotor blade includes a plurality of rotor blades;
said slot includes a plurality of slots, each positioned between a pair of said rotor blades each of said slots being defined in-part by an upper peripheral edge and a lower peripheral edge; and wherein said at least one lip includes a plurality of lips, each adjacent to and projecting outwardly from said lower peripheral edge of one of said slots.
4. A flotation machine rotor as defined by claim 1, wherein:
said body portion defines an opening in gaseous communication with said interior area.
said body portion defines an opening in gaseous communication with said interior area.
5. A flotation machine rotor as defined by claim 4, wherein said opening is in communication with a gas source.
6 6. A flotation machine rotor as defined by claim 1, wherein said body portion is contoured.
7. A flotation machine rotor as defined by claim 6, wherein said body portion is approximately symmetrical about a central axis and progressively increases in diameter from a lower to an upper portion.
8. A flotation machine rotor as defined by claim 1, wherein said aperture is positioned in an upper portion of said body.
9. A method for operating a flotation machine rotor, comprising:
providing a rotor forming part of a flotation machine, said rotor including a body portion defining an interior area adapted to communicate with a gas source, a plurality of rotor blades projecting radially outwardly from said body portion, at least one aperture defined by said body portion and in gaseous communication with said interior area, said aperture being positioned between successive rotor blades, said at least one aperture being defined in-part by a lower peripheral edge, and at least one lip projecting radially outwardly from said lower peripheral edge;
introducing a liquid/solid slurry into said flotation machine;
causing said rotor to spin about a central axis so that solid particles forming part of said slurry move upwardly along said body portion and contact said lip projecting at least a portion of said solid particles radially away from said rotor and in approximate alignment with said aperture;
causing gas to flow from said aperture, thereby forming bubbles defining a surface upon which a portion of said solid particles, that have passed over said lip, contact and are entrained thereon;
forming a froth comprising said bubbles having said solid particles entrained thereon; and removing said froth from said flotation machine.
providing a rotor forming part of a flotation machine, said rotor including a body portion defining an interior area adapted to communicate with a gas source, a plurality of rotor blades projecting radially outwardly from said body portion, at least one aperture defined by said body portion and in gaseous communication with said interior area, said aperture being positioned between successive rotor blades, said at least one aperture being defined in-part by a lower peripheral edge, and at least one lip projecting radially outwardly from said lower peripheral edge;
introducing a liquid/solid slurry into said flotation machine;
causing said rotor to spin about a central axis so that solid particles forming part of said slurry move upwardly along said body portion and contact said lip projecting at least a portion of said solid particles radially away from said rotor and in approximate alignment with said aperture;
causing gas to flow from said aperture, thereby forming bubbles defining a surface upon which a portion of said solid particles, that have passed over said lip, contact and are entrained thereon;
forming a froth comprising said bubbles having said solid particles entrained thereon; and removing said froth from said flotation machine.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US32403101P | 2001-09-21 | 2001-09-21 | |
| US60/324,031 | 2001-09-21 | ||
| PCT/US2002/029764 WO2003026800A2 (en) | 2001-09-21 | 2002-09-19 | Flotation machine rotor and method of operation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2461279A1 true CA2461279A1 (en) | 2003-04-03 |
| CA2461279C CA2461279C (en) | 2011-01-18 |
Family
ID=23261771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2461279A Expired - Lifetime CA2461279C (en) | 2001-09-21 | 2002-09-19 | Flotation machine rotor and method of operation |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2002326989B2 (en) |
| CA (1) | CA2461279C (en) |
| WO (1) | WO2003026800A2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4800017A (en) * | 1987-04-16 | 1989-01-24 | Dorr-Oliver Incorporated | Flotation mechanism |
| GB2304297B (en) * | 1995-08-17 | 1999-03-31 | Svedala Ltd | Flotation tank impeller |
-
2002
- 2002-09-19 WO PCT/US2002/029764 patent/WO2003026800A2/en not_active Application Discontinuation
- 2002-09-19 AU AU2002326989A patent/AU2002326989B2/en not_active Ceased
- 2002-09-19 CA CA2461279A patent/CA2461279C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| WO2003026800A2 (en) | 2003-04-03 |
| AU2002326989B2 (en) | 2006-06-22 |
| WO2003026800A3 (en) | 2004-02-26 |
| CA2461279C (en) | 2011-01-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20220920 |