US3428175A - Process and apparatus for froth flotation - Google Patents
Process and apparatus for froth flotation Download PDFInfo
- Publication number
- US3428175A US3428175A US553330A US3428175DA US3428175A US 3428175 A US3428175 A US 3428175A US 553330 A US553330 A US 553330A US 3428175D A US3428175D A US 3428175DA US 3428175 A US3428175 A US 3428175A
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- US
- United States
- Prior art keywords
- flotation
- chamber
- pulp
- chambers
- froth
- 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.)
- Expired - Lifetime
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Classifications
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- 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
- B03D1/1418—Flotation machines using centrifugal forces
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- 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
- B03D1/02—Froth-flotation processes
- B03D1/028—Control and monitoring of flotation processes; computer models therefor
-
- 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
- B03D1/02—Froth-flotation processes
- B03D1/04—Froth-flotation processes by varying ambient atmospheric pressure
-
- 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
- B03D1/1406—Flotation machines with special arrangement of a plurality of flotation cells, e.g. positioning a flotation cell inside another
-
- 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
- B03D1/1431—Dissolved air flotation machines
-
- 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
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/1462—Discharge mechanisms for the froth
-
- 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
- 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
- B03D1/24—Pneumatic
Definitions
- PROCESS AND APPARATUS FOR FROTH FLOTTION Filed may 27, 196e sheet 5 of s /N VEN 70@ 8f JMW@ A T ToR/VEX United States Patent O 25,097 65 U.S. Cl. 209-164 4 Claims Int. Cl. B03d 1 06 ABSTRACT F THE DISCLOSURE
- a froth flotation method and apparatus having unit froth llotation elements with closed flotation chambers operating under sub-atmospheric pressure into which feed slurry is introduced to create and maintain a pulp pool hafving a substantially constant top level within the chamber. Gas medium from an outside source under pressure higher than the sub-atmospheric pressure is introduced into the lower part of the pulp pool and dispersed into fine bubbles.
- each unit the pulp ilow is directed downward substantially centrally with respect to the rising stream of bubbles.
- the floating component is collected above the level of the feed inlet and is discharged therefrom while the non-floating component with liquid medium is discharged at a level below that of the -gas introduction.
- a plurality of such units formed into a closed circuit grouping under common sub-atmospheric pressure is arranged in such a way that the froth produced in a given step is transferred with evacuated gas medium to a separate flotation step performed in a similar unit on a higher elevation to upgrade the concentrate.
- the tailing product from such re-treatment step is returned by gravity to the former flotation step performed in a unit on a lower elevation.
- liquids such as water can dissolve substantial quantities of gas such as air.
- gas such as air
- the quantity of dissolved gas increases roughly linearly with increasing pressure, but decreases normally with an increase in temperature.
- one liter of water will dissolve 29.2 cm.3 of air at 0C., and 17.1 cm.3 at 25 C.
- the indicated gas quantities are doulbled.
- Preconditioning of the suspension to be processed serves a double purpose, i.e. changing the surfaces of the mineral or minerals to be lloated air avid with proper reagents -While the other minerals remain water avid, and dissolving gas, normally air, into the liquid forming the suspension with the solids processed.
- the roles played, methods applied and quantities used lwhen dealing with flotation reagents such as collectors, frothers and modifying agents are well known to a specialist in the art. They are not discussed in this specification.
- the apparatus for the froth flotation process outlined above comprises essentially:
- Introduction of the aerated pulp into the separation chamber is performed by controlled injection in a substantially horizontal manner, or by suction from a level below the feed inlet level.
- Additional gas medium is introduced into the lower part of the pulp pool at a desired rate from atmospheric air or from any outside source of gas under pressure via any suitable nozzle, bubbler, porous or perforated diffuser made of any suitable material.
- Injection of air-water mixture under pressure via a suitable injector has been -found to provide extremely simple means to produce linely divided air-in-water dispersion. Injection of air-pulp mixture under pressure is also possible.
- the flotation process according to the present invention comprises closed circuit grouping of unit flotation processes to separate the lloatable component from the nonfloatable component in a liquid medium under common sub-atmospheric pressure by means of gas bubbles originating partly -by precipitation of gas dissolved in the liquid medium, and partly by simultaneous dispersion of additional gas introduced from an outside source, the said grouping being arranged in such a way that the froth product produced in a given step is transferred with the evacuated gas medium to a separate retreatment otation step performed on a higher elevation and producing a higher grade concentrate, while the tailing produce produced in the latter retreatment step is returned by gravity to the former floation step performed on a lower elevation.
- FIGURE 1 is a diagrammatic vertical cross-sectional View showing the details of the unit apparatus constructed in accordance with the principles of this invention.
- FIGURE 2 is a similar view showing another possible arrangement of the apparatus.
- FIGURE 3 is a similar view showing still another possible arrangement of the apparatus.
- FIGURE 4 is a diagrammatic vertical side view showing grouping of the components for a multiple-step closed circuit flotation apparatus.
- the unit apparatus includes the following:
- the flotation apparatus proper is preceded by closed preconditioning and aeration unit 1 provided with -mechanically impeller 2.
- closed preconditioning and aeration unit 1 provided with -mechanically impeller 2.
- For introduction of pulp under pressure conditioner 1 is equipped with inlet pipe 3 and for introduction of gas similarly under pressure with pipe 4.
- the rate of gas flow is controlled by valve 5.
- Discharge of pulp from conditioner 1 takes place by pressure difference via conduit 6 controlled by valve 7.
- the main body of flotation chamber 8 consists of cylindrical feed section 9, cylindrical bubble column section 10 and conical bottom section 11.
- section 12 provided with one or more injectors 13 for the introduction of additional gas medium, emergency drainage pipe 14 with valve 15, and wash water inlet pipe 16 with valve 17.
- Section 11 is further provided with open tailing discharge pipe 18 surrounded -by open pipe 19 of larger diameter.
- Pipes 18 and 19 form a very simple tailing discharge and overflow system controlling pulp level within otation chamber ⁇ 8. If desired, the top of pipe 18 can be made adjustable in height. For bleeding of the coarsest sand fraction pipe 18 has been provided with opening 20 controlled by plug 21.
- the continuously operating discharge system for the non-floating tailing product includes further cylindrical bottom section 22 connecting here with long vertical discharge pipe 23.
- the length of the pipe is adjusted to suit the sub-atmospheric pressure acting within the system.
- the lower end of pipe 23 is immersed into a pulp pool in open vessel 24 provided with overflow Weir 25. Pulp retained in vessel 24 and the pulp column in pipe 23 form a liquid seal for the system.
- the top section of vessel 8 is further provided with cover 26 closing the vessel, froth collecting mean 27, open pressure equalizer pipe 28 and conduit 29 leading to cyclone 30.
- a parallel hydraulic system is provided including discharge pipe 31, vessel 32 and overflow weir 33.
- Conduit 34 connects cyclone 30 with any suitable source of vacuum (not shown).
- Accessory apparatus not shown in FIGURE 1 may include c g. vacuum gages, pressure gages, vacuum and pressure equalizer vessels, instruments to measure and regulate flow rates of pulp, ⁇ water and air, pulp level indicators and means to regulate pulp levels, pumps, wash water sprays above the bubble column, means to add wash or dilution water, etc. Their use is obvious to a specialist in the art of flotation.
- the unit apparatus shown in FIG. 2 differs from that already described in the following essential respects:
- Vessel 8 is now provided with concentrate launder 35 placed on the outside of section 10.
- 4Launder 35 has a direct connection with discharge pipe 31.
- Conduit 29 originates from the top of cover 26.
- unit vessel 8 has no overflow means for the froth product. Instead, it is provided with conical top section 36 and substantially cylindrical bubble column section 37, which together with conduit 29 form a passage for the concentrate product to cyclone 30.
- FIGURE l operates as follows:
- the concentrate product overflows into collecting means 27 and is drawn with carrier gas into cyclone 30, where solids and liquid are separated in the yform of pulp from gas.
- Concentrate pulp is discharged in a continuons stream via pipe 31 into vessel 32 and finally over Weir 33, while the gas fraction is drawn and discharged via the vacuum means out of the apparatus.
- the tailing product is discharged via a parallel hydraulic system including pipe 23, vessel 24 and weir 25. Pulp level within flotation chamber r8 is automatically kept substantially constant by the simple overflow means shown in FIG. l.
- the coarse tailing fraction can be drawn olf via opening 20 controlled by adjustable plug 21.
- conditioning and flotation units can be provided with heating elements of any suitable construction.
- any number of the unit otation processes described in the preceding can Ibe grouped within a variety of closed systems.
- such systems comprise flotation operations performed in such a way that the froth product from a given otation step is transferred to a successive step performed on a higher elevation and producing higher grade concentrate with the stream of evacuated Agas medium While the tailing product from the latter operation is returned by gravity to the prior operation lperformed on a lower elevation.
- FIGURE 4 corresponding multiple step closed circuit apparatus is shown to include five separate flotation chambers 38, 39, 40, 41, and 42 lall in the same closed system and under a common head of vacuum or partial vacuum.
- Chambers 38 and 39 are rougher flotation units, chamber 40 a cleaner flotation unit and chambers 41 and 42 scavenger flotation units.
- the vacuum conduit means connecting -any two flotation chambers situated on different levels form also conduit means for the transfer of the froth product from a unit on a lower elevation to a unit on a higher elevation.
- the flow arrangement is basically the same as shown in FIG. 1. The only essential difference is that discharge pipe 23 has now been replaced by substantially horizontal conduit means such as 45, 46, 47, and 48 connecting discharge sections 22 with corresponding feed section 9.
- the multiple step closed circuit apparatus consists of means already described.
- the multiple step closed circuit flotation system shown in FIGURE 4 operates as follows:
- Pre-'conditioned and pre-aerated feed pulp is drawn at a desired pulp density and at a desired temperature by the existing pressure difference from one or more conditioner tanks 1 situated here on a lower level via Ifeed inlet pipes 6 at rates controlled by valves 7 into rougher flotation units 38 and 39 where separation into rougher concentrate and rougher tailing products takes place as Valready described.
- rougher concentrates drawn via conduits 43 and 44 are combined in cleaner flotation chamber 40.
- Cleaner flotation concentrate is drawn via conduit 29 into cyclone 30 where concentrate pulp is separated from the carrier gas as already explained. Cleaner tailing pulp flows by gravity from chamber 40 via conduits 45 and 46 into rougher flotation chambers 3'8 and 39, resp.
- the rougher tailings produced in units 38 and 39 flow by gravity via similar conduits 47 and 48 into scavenger flotation Iunits 41 and 42, resp. Scavenger concentrates are drawn to the corresponding rougher units situated on a higher elevation as shown. Scavenger tailing products are discharged via pipes 23.
- the vacuum conduit means leading to the rougher flotation chamber receiving the original feed forms also a conduit for transfer of the froth product from the said rougher flotation chamber to a cleaner flotation chamber situated on a higher elevation while the tailing withdrawal means attached to the bottom part of the cleaner flotation chamber forms a conduit for the cleaner tailing product back to the rougher flotation chamber;
- the tailing withdrawal means attached to the bottom part of the rougher floaton chamber receiving the original feed forms a conduit for transfer of the rougher tailing product to a scavenger flotation chamber situated on a lower elevation while the vacuum conduit means leading to the scavenging flotation chamber forms also a conduit for the froth product from the said scavenger flotation chamber to the said rougher flotation chamber;
- the vacuum conduit means leading to the rougher flotation chamber receiving the original feed forms also a conduit for transfer of the froth product from the said rougher flotation chamber -to a cleaner flotation chamber situated on a higher elevation while the tailing withdrawal means attached to the bottom part of the cleaner flotation chamber forms a conduit for the cleaner tailing product back to the rougher flotation chamber
- the tailing withdrawal means attached to the bottom part of the rougher flotation chamber forming a conduit for the rougher tailing product to a scavenger flotation chamber situated on a lower elevation while the vacuum conduit means leading to the scavenger flotation chamber forms also a conduit for transfer of the froth product from Ithe said scavenger flotation chamber to the said rougher flotation chamber.
- vacuum conduit means other than those shown in FIGURE 4 may be added between units where needed.
- the conduits may naturally be provided with valves controlling the rates of flow to any desired extent.
- one final cleaner unit may accept the concentrates from e.g. six similar rougher units situated around it on a lower level. For each rougher, one similar scavenger unit can be provided on a level below the roughers.
- a stepped combination of one cleaner, one rougher and one scavenger unit each of a similar size may form the basic group.
- Many other combinations are obvious to a specialist in the art of flotation.
- a flotation plant fully automated and run by computers can be foreseen,
- Flotation at elevated temperature offers unexplored possibilities due to lowering of the temperature of the boiling point of water; at a pressure of mm. Hg, it is about 51 C., and
- a 4froth flotation process comprising grouping a plurality of flotation cells in a closed circuit, subjecting said cells to a common sub-atmospheric pressure, and transferring the froth product produced in a given flotation cell with the gas medium evacuated therewith to a separate retreatment flotation cell performed on a higher elevation and producing a higher grade concentrate, and returning the tailing product produced in said latter retreatment cell by gravity to said given flotation cell performed on a lower elevation.
- Apparatus for froth flotation comprising a plurality of flotation unit chambers including a cleaner flotation chamber and rougher flotation chambers, means for introducing original feed into said rougher flotation chambers, said cleaner flotation chamber being positioned on a higher elevation than said rougher flotation chambers, said chambers being operatively grouped together under common sub-atmospheric pressure, first conduit means joining said cleaner flotation chamber with said rougher flotation chambers, said rst conduit means serving as vacuum conduits for imposing said sub-atmospheric pressure within said rougher flotation chambers and said first conduit means also serving as means for transferring the froth product from said rougher flotation chambers to said cleaner flotation chamber, second conduit means connecting the bottom of said cleaner flotation chamber with said rougher flotation chamber, said second conduit means serving to transport tailing product from said cleaner flotation chamber to said rougher flotation chamber.
- Apparatus for froth flotation comprising a plurality of flotation unit chambers including rough flotation chambers and scavenger flotation chambers, said scavenger flotation chambers being positioned on a lower level than said rough flotation chambers, said chambers being operatively grouped together under common sub-atmospheric pressure, means to introduce original feed into said rough flotation chambers, first conduit means connecting the bottoms of said rough flotation chambers with said scavenger chambers, said first conduit means serving to transport tailing product from said rough flotation chambers to said scavenger chambers, and second conduit means connecting scavenger flotation chambers with said rough flotation chambers, said second conduit means serving as vacuum conduits for imposing sub-atmospheric pressure on said scavenger flotation chambers and also serving for transfer of the froth product from said scavenger flotation chambers to said rough flotation chambers.
- Apparatus for froth flotation comprising a plurality of flotation unit chambers including, cleaner flotation chambers, rougher flotation chambers and scavenger flotation chambers, means for introducing original feed into said rougher flotation chambers, said cleaner flotation chamber ⁇ being positioned on a higher level than that of said rougher flotation chamber, and said scavenger flotation chamber -being positioned on a lower level than that of said rougher flotation chamber, said chambers being operatively grouped together under common subatmospheric pressure, first conduit means connecting the interior of said rougher flotation chambers with the interior of said cleaner flotation chamber, said first conduit means serving as vacuum conduits for imposing subatmospheric pressure on said rougher flotation chambers and also serving as means for transporting the froth product from said rougher flotation chambers to said cleaner flotation chamber, second conduit means connecting the bottom of the interior of said cleaner flotation chamber with the interior of said rougher flotation chambers for transporting the tailing product from said cleaner flotation
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Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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GB25097/65A GB1058914A (en) | 1965-06-14 | 1965-06-14 | Froth flotation apparatus |
Publications (1)
Publication Number | Publication Date |
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US3428175A true US3428175A (en) | 1969-02-18 |
Family
ID=10222175
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US553330A Expired - Lifetime US3428175A (en) | 1965-06-14 | 1966-05-27 | Process and apparatus for froth flotation |
Country Status (6)
Country | Link |
---|---|
US (1) | US3428175A (nl) |
DE (1) | DE1269071B (nl) |
FI (1) | FI44564B (nl) |
GB (1) | GB1058914A (nl) |
NO (1) | NO115701B (nl) |
SE (1) | SE318235B (nl) |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3687286A (en) * | 1969-07-31 | 1972-08-29 | Oesterr Amerikan Magnesit | Centrifugal force separator or classifier |
US3802569A (en) * | 1971-09-14 | 1974-04-09 | Mitsui Mining & Smelting Co | Flotation machine |
US3928186A (en) * | 1973-07-24 | 1975-12-23 | Boise Cascade Corp | Combined pulp cleaning system including high and low pressure drop hydrocyclone cleaners |
US4156643A (en) * | 1976-07-21 | 1979-05-29 | Allied Chemical Corporation | Production of fluorspar having a reduced organic and calcium carbonate content |
US4263029A (en) * | 1979-02-02 | 1981-04-21 | Cego, Inc. | Oil reclaimer and muffler assembly and system |
US4288319A (en) * | 1979-02-05 | 1981-09-08 | N.V. Papierfabriek Gennep | Method of and arrangement for de-inking fiber |
US4331534A (en) * | 1978-08-21 | 1982-05-25 | Feldmuhle Aktiengesellschaft | Method of and arrangement for the de-inking of pulp suspensions |
US4436617A (en) | 1982-07-22 | 1984-03-13 | Cocal, Inc. | Froth flotation ore beneficiation process utilizing enhanced gasification and flow techniques |
US4443331A (en) * | 1980-03-21 | 1984-04-17 | Centre Technique De L'industries Des Papiers Carton Et Celluloses | Process and device for separating particles in a fluid especially for the cleaning of the suspensions handled in the paper industry |
US4561980A (en) * | 1983-08-08 | 1985-12-31 | R. A. Couche & Associates Pty. Ltd. | Screening device |
EP0271427A2 (en) * | 1986-12-10 | 1988-06-15 | Beloit Technologies, Inc. | Pressurized flotation module and method for pressurized foam separation |
US4964994A (en) * | 1989-03-21 | 1990-10-23 | Amoco Corporation | Hydrocyclone separator |
US5116487A (en) * | 1990-07-27 | 1992-05-26 | University Of Kentucky Research Foundation | Froth flotation method for recovery of ultra-fine constituent |
US5192423A (en) * | 1992-01-06 | 1993-03-09 | Hydro Processing & Mining Ltd. | Apparatus and method for separation of wet particles |
US5275732A (en) * | 1990-07-03 | 1994-01-04 | International Environmental Systems, Inc., Usa | Combined coarse and fine bubble separation system |
US5402893A (en) * | 1993-06-16 | 1995-04-04 | Rhone-Poulenc Rhodia Aktiengesellschaft | Method for processing waste material in the form of filter rods, filter cigarettes and the like |
US5535893A (en) * | 1989-10-19 | 1996-07-16 | University Of Newcastle Research Associates Ltd. | Method and apparatus for separation by flotation in a centrifugal field |
US5672267A (en) * | 1995-06-06 | 1997-09-30 | Multotec Cyclones (Pty) Limited | Flotation column with constant feed arrangement |
US5702612A (en) * | 1995-07-20 | 1997-12-30 | University Of Kentucky Research Foundation | Method and apparatus for flotation separation |
US5725764A (en) * | 1990-09-28 | 1998-03-10 | Paul C. Broussard, Sr. | Apparatus for clarifying contaminated fluids |
US5814229A (en) * | 1994-02-07 | 1998-09-29 | Puraq As | Water treatment method and apparatus |
US6491826B1 (en) * | 1999-10-12 | 2002-12-10 | Marine Biotech Incorporated | Systems and methods for separation of organics from fluids |
US6649067B2 (en) * | 1997-12-20 | 2003-11-18 | Forschungszentrum Julich Gmbh | Flotation method |
US20050284818A1 (en) * | 2004-06-28 | 2005-12-29 | Patterson Stanley A | Column flotation cell for enhanced recovery of minerals such as phosphates by froth flotation |
US20100167339A1 (en) * | 2007-06-19 | 2010-07-01 | Eastman Chemical Company | Process for microalgae conditioning and concentration |
CN102935408A (zh) * | 2012-11-06 | 2013-02-20 | 永利高盛(北京)环保科技有限公司 | 用于硫铁矿的浮选药剂及其制备方法和浮选方法 |
CN106902999A (zh) * | 2017-03-24 | 2017-06-30 | 绵阳耀邦环保科技有限公司 | 强化分离的离心旋流装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3338171C3 (de) * | 1983-10-20 | 1994-04-14 | Ystral Gmbh Maschinenbau Und P | Verfahren zum Trennen der Bestandteile von Emulsionen und Vorrichtung zur Durchführung des Verfahrens |
EP0146235A3 (en) * | 1983-10-21 | 1987-02-04 | The University Of Newcastle Research Associates Limited | Improved flotation method |
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DE336771C (de) * | 1914-07-10 | 1921-05-18 | Maximilian Schiechel | Verfahren zur Trennung von Erztrueben mit oder ohne vorherige Behandlung mit OElen oder Saeuren in evakuierten Trennungsraeumen |
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GB633776A (en) * | 1947-06-11 | 1949-12-30 | William John Sutton | Improved processes and apparatus for the vacuum flotation treatment of coal, ores and the like |
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1965
- 1965-06-14 GB GB25097/65A patent/GB1058914A/en not_active Expired
-
1966
- 1966-05-27 US US553330A patent/US3428175A/en not_active Expired - Lifetime
- 1966-06-08 DE DEP1269A patent/DE1269071B/de active Pending
- 1966-06-13 FI FI1552/66A patent/FI44564B/fi active
- 1966-06-13 NO NO163428A patent/NO115701B/no unknown
- 1966-06-14 SE SE8122/66A patent/SE318235B/xx unknown
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US807503A (en) * | 1904-05-27 | 1905-12-19 | Schwarz Ore Treating Company | Process of concentrating ores. |
US1022085A (en) * | 1911-11-10 | 1912-04-02 | James M Hyde | Art of concentration of mineral substances. |
US1212566A (en) * | 1915-06-25 | 1917-01-16 | Friedrich Arthur Maximilian Schiechel | Separating finely-divided ore mixtures in vacuum separating vessels or chambers. |
US1176428A (en) * | 1916-01-21 | 1916-03-21 | Metals Recovery Co | Flotation separatory apparatus and process. |
US1221990A (en) * | 1916-07-03 | 1917-04-10 | Washburn Crosby Company | Process of obtaining starch. |
FR621414A (fr) * | 1926-03-04 | 1927-05-11 | Raffinage du graphite par flottage | |
FR703922A (fr) * | 1930-01-08 | 1931-05-08 | Procédé et installation de lavage et séparation par flottation des charbons, des minerais et autres matières pulvérulentes | |
GB505688A (en) * | 1938-01-13 | 1939-05-16 | William John Sutton | Improvements relating to cleaning coal, concentrating ores and the like |
US2914173A (en) * | 1957-07-19 | 1959-11-24 | Int Minerals & Chem Corp | Method of processing phosphate ore to recover metallic minerals |
US2984348A (en) * | 1958-08-14 | 1961-05-16 | Int Minerals & Chem Corp | Beneficiation of potash ores |
US3307790A (en) * | 1963-03-20 | 1967-03-07 | Mineral Ind Corp Of America | Flotation method and apparatus |
Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
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US3687286A (en) * | 1969-07-31 | 1972-08-29 | Oesterr Amerikan Magnesit | Centrifugal force separator or classifier |
US3802569A (en) * | 1971-09-14 | 1974-04-09 | Mitsui Mining & Smelting Co | Flotation machine |
US3928186A (en) * | 1973-07-24 | 1975-12-23 | Boise Cascade Corp | Combined pulp cleaning system including high and low pressure drop hydrocyclone cleaners |
US4156643A (en) * | 1976-07-21 | 1979-05-29 | Allied Chemical Corporation | Production of fluorspar having a reduced organic and calcium carbonate content |
US4331534A (en) * | 1978-08-21 | 1982-05-25 | Feldmuhle Aktiengesellschaft | Method of and arrangement for the de-inking of pulp suspensions |
US4263029A (en) * | 1979-02-02 | 1981-04-21 | Cego, Inc. | Oil reclaimer and muffler assembly and system |
US4288319A (en) * | 1979-02-05 | 1981-09-08 | N.V. Papierfabriek Gennep | Method of and arrangement for de-inking fiber |
US4443331A (en) * | 1980-03-21 | 1984-04-17 | Centre Technique De L'industries Des Papiers Carton Et Celluloses | Process and device for separating particles in a fluid especially for the cleaning of the suspensions handled in the paper industry |
US4436617A (en) | 1982-07-22 | 1984-03-13 | Cocal, Inc. | Froth flotation ore beneficiation process utilizing enhanced gasification and flow techniques |
US4561980A (en) * | 1983-08-08 | 1985-12-31 | R. A. Couche & Associates Pty. Ltd. | Screening device |
EP0271427A2 (en) * | 1986-12-10 | 1988-06-15 | Beloit Technologies, Inc. | Pressurized flotation module and method for pressurized foam separation |
EP0271427A3 (en) * | 1986-12-10 | 1990-03-14 | Beloit Corporation | Pressurized flotation module and method for pressurized foam separation |
US4952308A (en) * | 1986-12-10 | 1990-08-28 | Beloit Corporation | Pressurized flotation module and method for pressurized foam separation |
US5273624A (en) * | 1986-12-10 | 1993-12-28 | Beloit Technologies, Inc. | Pressurized flotation module and method for pressurized foam separation |
US4964994A (en) * | 1989-03-21 | 1990-10-23 | Amoco Corporation | Hydrocyclone separator |
US5535893A (en) * | 1989-10-19 | 1996-07-16 | University Of Newcastle Research Associates Ltd. | Method and apparatus for separation by flotation in a centrifugal field |
US5275732A (en) * | 1990-07-03 | 1994-01-04 | International Environmental Systems, Inc., Usa | Combined coarse and fine bubble separation system |
US5116487A (en) * | 1990-07-27 | 1992-05-26 | University Of Kentucky Research Foundation | Froth flotation method for recovery of ultra-fine constituent |
US5725764A (en) * | 1990-09-28 | 1998-03-10 | Paul C. Broussard, Sr. | Apparatus for clarifying contaminated fluids |
US5192423A (en) * | 1992-01-06 | 1993-03-09 | Hydro Processing & Mining Ltd. | Apparatus and method for separation of wet particles |
US5402893A (en) * | 1993-06-16 | 1995-04-04 | Rhone-Poulenc Rhodia Aktiengesellschaft | Method for processing waste material in the form of filter rods, filter cigarettes and the like |
US5814229A (en) * | 1994-02-07 | 1998-09-29 | Puraq As | Water treatment method and apparatus |
US5672267A (en) * | 1995-06-06 | 1997-09-30 | Multotec Cyclones (Pty) Limited | Flotation column with constant feed arrangement |
US5702612A (en) * | 1995-07-20 | 1997-12-30 | University Of Kentucky Research Foundation | Method and apparatus for flotation separation |
US6649067B2 (en) * | 1997-12-20 | 2003-11-18 | Forschungszentrum Julich Gmbh | Flotation method |
US6491826B1 (en) * | 1999-10-12 | 2002-12-10 | Marine Biotech Incorporated | Systems and methods for separation of organics from fluids |
US8231008B2 (en) | 2004-06-28 | 2012-07-31 | Mos Holdings Inc. | Column flotation cell for enhanced recovery of minerals such as phosphates by froth flotation |
US7510083B2 (en) * | 2004-06-28 | 2009-03-31 | The Mosaic Company | Column flotation cell for enhanced recovery of minerals such as phosphates by froth flotation |
US20090145821A1 (en) * | 2004-06-28 | 2009-06-11 | Patterson Stanley A | Column flotation cell for enhanced recovery of minerals such as phosphates by froth flotation |
US20050284818A1 (en) * | 2004-06-28 | 2005-12-29 | Patterson Stanley A | Column flotation cell for enhanced recovery of minerals such as phosphates by froth flotation |
US20100167339A1 (en) * | 2007-06-19 | 2010-07-01 | Eastman Chemical Company | Process for microalgae conditioning and concentration |
US20100176062A1 (en) * | 2007-06-19 | 2010-07-15 | Eastman Chemical Company | Process and apparatus for adsorptive bubble separation using a dense foam |
US20100181234A1 (en) * | 2007-06-19 | 2010-07-22 | Eastman Chemical Company | Process and apparatus for adsorptive bubble separation |
US8196750B2 (en) * | 2007-06-19 | 2012-06-12 | Renewable Algal Energy, Llc | Process and apparatus for adsorptive bubble separation using a dense foam |
US8251228B2 (en) | 2007-06-19 | 2012-08-28 | Renewable Algal Energy, Llc | Process and apparatus for adsorptive bubble separation |
US8512998B2 (en) | 2007-06-19 | 2013-08-20 | Renewable Algal Energy, Llc | Process for microalgae conditioning and concentration |
US9358553B2 (en) | 2007-06-19 | 2016-06-07 | Renewable Algal Energy, Llc | Process for microalgae conditioning and concentration |
CN102935408A (zh) * | 2012-11-06 | 2013-02-20 | 永利高盛(北京)环保科技有限公司 | 用于硫铁矿的浮选药剂及其制备方法和浮选方法 |
CN106902999A (zh) * | 2017-03-24 | 2017-06-30 | 绵阳耀邦环保科技有限公司 | 强化分离的离心旋流装置 |
Also Published As
Publication number | Publication date |
---|---|
GB1058914A (en) | 1967-02-15 |
SE318235B (nl) | 1969-12-08 |
FI44564B (nl) | 1971-08-31 |
DE1269071B (de) | 1968-05-30 |
NO115701B (nl) | 1968-11-18 |
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