GB1465801A - Process and device for dispersing gas into a liquid - Google Patents

Process and device for dispersing gas into a liquid

Info

Publication number
GB1465801A
GB1465801A GB2448074A GB2448074A GB1465801A GB 1465801 A GB1465801 A GB 1465801A GB 2448074 A GB2448074 A GB 2448074A GB 2448074 A GB2448074 A GB 2448074A GB 1465801 A GB1465801 A GB 1465801A
Authority
GB
United Kingdom
Prior art keywords
rotor
gas
liquid
stator
increase
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
Application number
GB2448074A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Outokumpu Oyj
Original Assignee
Outokumpu Oyj
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Outokumpu Oyj filed Critical Outokumpu Oyj
Publication of GB1465801A publication Critical patent/GB1465801A/en
Expired legal-status Critical Current

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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • 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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23311—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer axis
    • 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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2334—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer
    • B01F23/23342—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer the stirrer being of the centrifugal type, e.g. with a surrounding stator
    • 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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2336—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer
    • B01F23/23364—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer the gas being introduced between the stirrer elements
    • 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
    • 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
    • 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
    • B03D1/245—Injecting gas through perforated or porous area
    • 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
    • B03D1/247—Mixing gas and slurry in a device separate from the flotation tank, i.e. reactor-separator type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/111—Centrifugal stirrers, i.e. stirrers with radial outlets; Stirrers of the turbine type, e.g. with means to guide the flow

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)
  • Physical Water Treatments (AREA)
  • Centrifugal Separators (AREA)

Abstract

1465801 Dispersing gases in liquids; froth flotation apparatus OUTOKUMPU OY 3 June 1974 [5 June 1973] 24480/74 Heading B1C and B2X In a method of dispersing a gas in a liquid or slurry, (e.g. for froth flotation) by means of a rotor within a stator, the increase in hydrostatic pressure with increasing depth is compensated by a hydraulic pressure correspondingly changing with depth in order to keep the total liquid pressure substantially constant over the surface over which the gas is dispersed; this is done by arranging for the ring of liquid between the rotor and stator to increase in thickness with depth so that the centrifugal force acting on the liquid ring produces the compensating dynamic pressure. As shown in Fig. 1 gas is supplied through a hollow shaft and dispersed through passages 5 between which are "grooves" 8 through which the slurry circulates; the envelope of the rotor is cylindrical while the stator is shaped so that the clearance between them increases downwardly. In other embodiments the rotor may narrow downwardly while the inner envelope of the stator is cylindrical, or both may increase in diameter downwardly with increasing clearance (Figs. 4-7, not shown). In Fig. 1 the "grooves" 8 are closed at the bottom, but they may be open at both ends or shrouded at the top (see Figs. 2 and 3, not shown). The gas passages 5 in the rotor may be omitted (Fig. 8, not shown) and the gas introduced above the rotor through a downcover surrounding the rotor shaft (Fig. 12, not shown).
GB2448074A 1973-06-05 1974-06-03 Process and device for dispersing gas into a liquid Expired GB1465801A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI1823/73A FI55124C (en) 1973-06-05 1973-06-05 PROCEDURE FOR THE DISCUSSION OF WASTE AND ENVIRONMENT

Publications (1)

Publication Number Publication Date
GB1465801A true GB1465801A (en) 1977-03-02

Family

ID=8506249

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2448074A Expired GB1465801A (en) 1973-06-05 1974-06-03 Process and device for dispersing gas into a liquid

Country Status (19)

Country Link
JP (1) JPS5738290B2 (en)
BE (1) BE815783A (en)
BG (1) BG30171A3 (en)
CA (1) CA1030280A (en)
CS (1) CS193032B2 (en)
DD (1) DD114756A5 (en)
DE (1) DE2425959C2 (en)
ES (1) ES426886A1 (en)
FI (1) FI55124C (en)
FR (1) FR2232356B1 (en)
GB (1) GB1465801A (en)
HU (1) HU171323B (en)
NO (1) NO141501C (en)
RO (1) RO66332A (en)
SE (1) SE397166B (en)
SU (1) SU1072793A3 (en)
YU (1) YU36868B (en)
ZA (1) ZA743408B (en)
ZM (1) ZM8274A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0985444A1 (en) * 1998-08-12 2000-03-15 Linde Aktiengesellschaft Process and apparatus for mixing products
US11571638B2 (en) 2017-08-15 2023-02-07 Siemens Energy, Inc. Methods and systems for enhanced dissolved gas floatation

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK532278A (en) 1977-12-02 1979-06-03 Nat Res Dev APPLIANCE FOR VENTILATION OF A LIQUID
NO142830C (en) * 1978-02-28 1980-10-29 Trondhjems Mek Verksted As DEVICE FOR DISTRIBUTING A GAS IN A FLUID MEDIUM
WO1990014880A1 (en) * 1989-05-03 1990-12-13 Ullrich, Manfred Mixing device for fluids
CN109127155A (en) * 2018-09-21 2019-01-04 四川省川机工程技术有限公司 A kind of agitation impeller flotator increasing ventilatory capacity

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE541188A (en) *
US2696913A (en) * 1949-12-08 1954-12-14 Charles M Anderson Revolving current flotation machine
US2928665A (en) * 1950-09-27 1960-03-15 American Instr Co Inc Gas-liquid mixing apparatus
DE879081C (en) * 1951-02-23 1953-06-11 Michael Philosophow Agitator with air supply
BE525439A (en) * 1953-03-13
BE635852A (en) * 1962-08-07
US3327851A (en) * 1965-01-25 1967-06-27 Galigher Company Flotation machine and stator therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0985444A1 (en) * 1998-08-12 2000-03-15 Linde Aktiengesellschaft Process and apparatus for mixing products
US11571638B2 (en) 2017-08-15 2023-02-07 Siemens Energy, Inc. Methods and systems for enhanced dissolved gas floatation

Also Published As

Publication number Publication date
JPS50129406A (en) 1975-10-13
SE397166B (en) 1977-10-24
CA1030280A (en) 1978-04-25
RO66332A (en) 1980-07-15
FR2232356B1 (en) 1978-01-13
JPS5738290B2 (en) 1982-08-14
BE815783A (en) 1974-09-16
AU6934074A (en) 1975-11-27
FR2232356A1 (en) 1975-01-03
YU36868B (en) 1984-08-31
ZM8274A1 (en) 1975-02-21
NO742035L (en) 1974-12-06
NO141501C (en) 1980-03-26
CS193032B2 (en) 1979-09-17
SE7407330L (en) 1974-12-06
DE2425959C2 (en) 1981-10-22
DD114756A5 (en) 1975-08-20
NO141501B (en) 1979-12-17
ES426886A1 (en) 1976-07-16
FI55124C (en) 1979-06-11
FI182373A (en) 1974-12-06
YU155174A (en) 1982-06-18
ZA743408B (en) 1975-06-25
FI55124B (en) 1979-02-28
DE2425959A1 (en) 1975-01-02
SU1072793A3 (en) 1984-02-07
BG30171A3 (en) 1981-04-15
HU171323B (en) 1977-12-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19940602