US3256987A - Flotation apparatus - Google Patents

Flotation apparatus Download PDF

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Publication number
US3256987A
US3256987A US232179A US23217962A US3256987A US 3256987 A US3256987 A US 3256987A US 232179 A US232179 A US 232179A US 23217962 A US23217962 A US 23217962A US 3256987 A US3256987 A US 3256987A
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Prior art keywords
air
liquid
outlet opening
vessel
duct
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Expired - Lifetime
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US232179A
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English (en)
Inventor
Isenhardt Friedel
Schlegl Franz
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Kloeckner Humboldt Deutz AG
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Kloeckner Humboldt Deutz AG
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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
    • B03D1/16—Flotation machines with impellers; Subaeration machines

Definitions

  • a rotating swirl or -agitator disc in the lower part of the cell which during its rotation also performs a swinging motion, thus oombining an effective beating action with the stirring function.
  • the agitator disc is mounted to rotate in front of the air supply opening and has its circular edge perform a swinging up and down motion.
  • the swinging disc is mounted on the lower end of an essentially vertical drive shaft, and the plane of the disc extends at an angle differing from 90 so that the disc performs a tumbling motion during its rotation.
  • the tumbling disc is further provided with upwardly protruding agitator ribs on its top side.
  • a xed guiding plate above the agitator disc in concentric relation to the drive shaft. and to an -air-supply pipe, the :above-mentioned ribs on top of the agitator disc being equally spaced from the guide plate.
  • the ribs of the agitator disc respectively different thickness so as'to attain substantial or approximate balance of the rotating disc.
  • balance may also ⁇ be obtained or perfected by adding an unbalance-compensating Weight to the disc, in which case the respective ribs may also be given the same wall thick-v that the turbid liquid, entering into an annular chamberl ice.
  • the agitator disc may be provided with openings, for example uniformlyv arranged bores of circular shape.
  • FIG. 1 shows 'a flotation cell in lateral view, partly in section.
  • FIG. 2 shows separately the agitator disc of the same cell on larger scale and in section.
  • FIG. 3 is a plan view of the agitator disc according to FIG. 2.'
  • the illustrated flotation cell comprises a tank 1 in which a vertical drive shaft 2 is revolvably journalled. Mounted on the lower end of the shaft 2. near the bottom of the Y vessel is a tumbling disc 3 with upwardly directed ribs 5 uniformly distributed about the hub 4. The plane of the disc 3 is inclined to the axis of the drive shaft -2 so -as to perform a swinging or tumbling motion during rotation. This produces yan intensive mixing of the inducted air with the turbid liquid which is beaten into -a multiplicity of finest bubbles.
  • the upper edges of the rib 5 on disc 3. are spaced at 7 equal amounts from a guiding plate 6 xedly mounted in the vessel closely above the rotatable isc 3.
  • the vribs 5, having respectively different'heights, are given correspondingly different amounts of thickness so that a substantially balanced and Vibration-free run of the turnbling disc is secured even at high rotating speeds.
  • the 4balance of the disc can be perfected by adding a compensating weight to the bottom side of the disc 3 as shown at 12 in FIG. 3.
  • the ribs 5 may also be given the same thickness in which case the balancing of the tumbling disc 3 can be effected only by means of an additional weight -attached to .the bottom side of the disc and situated at the same place 12 as shown in FIG. 3, exept that in the latter case the corrective weight must be arger.
  • an air pipe 9, 9' coaxially surrounding the drive shaft 2 has its lower portion 9 extend downwardly close to the guiding plate 6 with the exception of a small annular gap 1d.
  • the above-mentioned stationary guide plate 6 is preferably provided with uniformly distributed guiding vanes 6 and is rigidly mounted on a supporting'structure 12 engaged by the air supply pipe 9 and' joined or integral with the bath supply structure 8.
  • the shaft 2 is driven by means of a belt drive 13 on top of the vessel structure from an electric motor 14.
  • a otation apparatus In contrast to the agitator wheels of known otation cells, a otation apparatus according to the invention has the advantage that, by virtue of the to and fro motion of the swinging disc simultaneous with its rotation,
  • the swinging disc promotes the supply of air and secures a continuous induction of the air needed for ample froth formation and reliable flotation.
  • An apparatus for air-froth dotation comprising a vessel for liquid medium, a iixed tubular air-suction duct extending downwardly into said vessel and having a lower open end whose outlet opening is located in the bottom portion of said vessel, a vertical drive shaft coaxially traversing said air duct and protruding downwardly out of said opening, said shaft having a smaller diameter than said duct to form an annular suction space together therewith, liquid-supply means having an end portion surrounding and radially spaced from the lower end of said air duct and having an outlet opening of greater diameter than the diameter of said air duct outlet opening and annularly surrounding the outlet opening of said air duct, and a stirrer disc mounted on said shaft below said openings and rotatable for producing a flow of liquid in said liquid-supply means downwardly and outwardly along and around said open air duct end whereby air is.
  • a flotation apparatus for classifying mineral mixtures in liquid media by air-froth tioating a constituent of the mixture, comprising a vessel containing mixtureladen liquid when the apparat-us is in operation, and having an overflow for separated materials, a tubular airlsuction duct extending downwardly into said vessel, said tube having an open lower end whose outlet opening is located in the bottom portion of said vessel, a vertical drive shaft coaxially traversing said air duct and having a lower end protruding downwardly out of said air outlet opening, a horizontal guide plate tixedly mounted in said vessel near said opening and having a suction opening greater in diameter than, directly below and radially spaced from said air outlet opening, a liquid supply structure having an end portion forming an annular chamber coaxially around said lower end of said air duct near said air outlet opening and above Vsaid plate and cornmunicating with said suction opening, and a stirrer member mounted on said shaft below said air outlet opening and said suction opening and rotatable for producing
  • An apparatus for air-froth flotation comprising a vessel for liquid medium, a xed tubular air-suction duct extending downwardly into said vessel and having a lower open end whose outlet opening is located in the bottom portion of said vessel, a vertical drive shaft coaxially traversing said air duct and protruding downwardly out of said opening, said shaft having a smaller diameter than said duct to form an annular suction space together therewith, a liquid-supply duct having an end portion coaxially aligned with, surrounding and radially spaced from the lower end of said air duct, and dening a liquid flow path extending in the same flow direction as said air duct end, said liquid-supply duct having an outlet opening adjacent and annularly surrounding the outlet opening of said air duct, said liquid-supply duct outlet opening having a greater diameter than the diameter of said air duct outlet opening, and a stirrer disc mounted on said shaft below said outlet openings and rotatable for producing a flow of liquid in said liquid-suppli
  • said disc having upwardly protruding ribs distributed on the top side of said disc, said ribs having respectively ditferent heights and having respective top edges at ⁇ substantially the same height of said shaft, and said ribs of greater height having correspondingly smaller thickness magnitudes than said ribs of lesser height so as to substantially balance said disc.
  • An apparatus for air-froth flotation comprising a vessel for liquid medium, a xed tubular air-suction duct extending downwardly into said vessel and having a lower open end 'whose outlet opening is located in the bottom portion of said vessel, a vertical drive shaft coaxially traversing said air duct and protruding downwardly out of said opening, said shaft having a smaller diameter than said duct to form an annular suction space together therewith, a liquid-supply duct having an end portion coaxially aligned with, surrounding and radially spaced from the lower end of said air duct, and defining a liquid ow path extending in the same flow direction as said air duct end, said liquid-supply duct having an outlet opening adjacent and annularly surrounding the outlet opening of said air duct, said liquid-supply duct outlet opening having a greater diameter than the diameter of said air duct outlet opening, and a stirrer disc mounted on said shaft below said outlet openings and rotatable for producing a How of liquid in said liquid liquid

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Paper (AREA)
  • Physical Water Treatments (AREA)
US232179A 1962-04-27 1962-10-22 Flotation apparatus Expired - Lifetime US3256987A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK46585A DE1164946B (de) 1962-04-27 1962-04-27 Verfahren zur Belueftung der Truebe in einer Ruehrwerksflotationszelle und eine Ruehrwerksflotationszelle zur Durchfuehrung dieses Verfahrens

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US3256987A true US3256987A (en) 1966-06-21

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US232179A Expired - Lifetime US3256987A (en) 1962-04-27 1962-10-22 Flotation apparatus

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US (1) US3256987A (zh)
BE (1) BE631382A (zh)
DE (1) DE1164946B (zh)
GB (1) GB959920A (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3393802A (en) * 1964-02-03 1968-07-23 Denver Equip Co Aerating assembly for froth flotation cells
US3393803A (en) * 1964-03-23 1968-07-23 Denver Equip Co Aerating assembly for froth flotation cells
US3603563A (en) * 1968-12-12 1971-09-07 Monsanto Co Blender-pump
US3792840A (en) * 1971-06-15 1974-02-19 Westinghouse Electric Corp Submerged turbine aerator
US5362148A (en) * 1994-02-28 1994-11-08 Graco Inc. Rotary agitator with concentric suction tube

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2907257C2 (de) * 1979-02-24 1982-04-22 Ukrainskij Naucno-Issledovatel'skij Uglechimiceskij Institut, Charkov Vorrichtung zur Durchlüftung von Trüben

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1470607A (en) * 1922-11-03 1923-10-16 Unchokeable Pump Ltd Impeller for centrifugal pumps
US1654907A (en) * 1925-09-05 1928-01-03 Albert B Wood Centrifugal pump
US1908002A (en) * 1930-10-30 1933-05-09 Turbo Mixer Corp Mixing apparatus
US2031590A (en) * 1931-10-05 1936-02-25 Arthur C Daman Flotation apparatus
US2316770A (en) * 1940-05-27 1943-04-20 Mining Process & Patent Co Froth flotation apparatus and treatment
US2336798A (en) * 1941-12-20 1943-12-14 Roy A Nash Pulp beater
US2393976A (en) * 1941-05-31 1946-02-05 Mining Process & Patent Co Agitating means and method
US2423456A (en) * 1943-04-16 1947-07-08 Mining Process & Patent Co Multiple-stage froth flotation
US2682576A (en) * 1951-01-20 1954-06-29 Irving H Selden Telephone system
US2711823A (en) * 1950-08-02 1955-06-28 Bolidens Gruv Ab Flotation machines
US2875897A (en) * 1953-06-22 1959-03-03 Booth Lionel Earl Flotation machine
US2944802A (en) * 1955-02-16 1960-07-12 Denver Equip Co Froth flotation and aeration apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE316445C (zh) *
US697152A (en) * 1901-06-20 1902-04-08 Tom J Landrum Churn.
US2610836A (en) * 1950-06-30 1952-09-16 Standard Oil Dev Co Rotating plate mixing device
DE1792943U (de) * 1959-05-04 1959-08-06 Tief Und Oberbau G M B H Mischvorrichtung fuer die herstellung kolloidalen moertels.

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1470607A (en) * 1922-11-03 1923-10-16 Unchokeable Pump Ltd Impeller for centrifugal pumps
US1654907A (en) * 1925-09-05 1928-01-03 Albert B Wood Centrifugal pump
US1908002A (en) * 1930-10-30 1933-05-09 Turbo Mixer Corp Mixing apparatus
US2031590A (en) * 1931-10-05 1936-02-25 Arthur C Daman Flotation apparatus
US2316770A (en) * 1940-05-27 1943-04-20 Mining Process & Patent Co Froth flotation apparatus and treatment
US2393976A (en) * 1941-05-31 1946-02-05 Mining Process & Patent Co Agitating means and method
US2336798A (en) * 1941-12-20 1943-12-14 Roy A Nash Pulp beater
US2423456A (en) * 1943-04-16 1947-07-08 Mining Process & Patent Co Multiple-stage froth flotation
US2711823A (en) * 1950-08-02 1955-06-28 Bolidens Gruv Ab Flotation machines
US2682576A (en) * 1951-01-20 1954-06-29 Irving H Selden Telephone system
US2875897A (en) * 1953-06-22 1959-03-03 Booth Lionel Earl Flotation machine
US2944802A (en) * 1955-02-16 1960-07-12 Denver Equip Co Froth flotation and aeration apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3393802A (en) * 1964-02-03 1968-07-23 Denver Equip Co Aerating assembly for froth flotation cells
US3393803A (en) * 1964-03-23 1968-07-23 Denver Equip Co Aerating assembly for froth flotation cells
US3603563A (en) * 1968-12-12 1971-09-07 Monsanto Co Blender-pump
US3792840A (en) * 1971-06-15 1974-02-19 Westinghouse Electric Corp Submerged turbine aerator
US5362148A (en) * 1994-02-28 1994-11-08 Graco Inc. Rotary agitator with concentric suction tube

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Publication number Publication date
GB959920A (en) 1964-06-03
DE1164946B (de) 1964-03-12
BE631382A (zh)

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