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WO1993014876A1 - Appareil de flottation pour obtenir des concentres de minerais - Google Patents

Appareil de flottation pour obtenir des concentres de minerais Download PDF

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Publication number
WO1993014876A1
WO1993014876A1 PCT/SE1993/000079 SE9300079W WO9314876A1 WO 1993014876 A1 WO1993014876 A1 WO 1993014876A1 SE 9300079 W SE9300079 W SE 9300079W WO 9314876 A1 WO9314876 A1 WO 9314876A1
Authority
WO
WIPO (PCT)
Prior art keywords
froth
channel
wall
lead
zinc
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.)
Ceased
Application number
PCT/SE1993/000079
Other languages
English (en)
Inventor
Jan-Erik Johansson
Leif Johansson
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP93904425A priority Critical patent/EP0725684A1/fr
Priority to FI943601A priority patent/FI943601A7/fi
Publication of WO1993014876A1 publication Critical patent/WO1993014876A1/fr
Priority to NO942500A priority patent/NO302157B1/no
Anticipated expiration legal-status Critical
Ceased 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
    • B03D1/02—Froth-flotation processes
    • 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
    • B03D1/08—Subsequent treatment of concentrated product
    • B03D1/082—Subsequent treatment of concentrated product of the froth product, e.g. washing
    • 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
    • B03D1/02—Froth-flotation processes
    • B03D1/028—Control and monitoring of flotation processes; computer models therefor

Definitions

  • flotation apparatus Various types of what are known as flotation apparatus are used when concentrating ores or separating various minerals. (Separated from gangue.) The concentrate should therefore be as clean as possible.
  • This method is known as flotation. Air and froth-former are added to the pulp in these apparatus, together with a flocculation reagent. It is this that alters the surface-active properties of the mineral particles so that they cling or adhere to air bubbles. The air bubbles then rise to the surface where they are taken care of in the froth formed.
  • the apparatus presently in existence function well but can be made to function considerably better.
  • the contents in the concentrate become consi ⁇ derably higher.
  • the novelty of the invention is that the froth is not only allowed to drain off (as now), but is concentrated and then washed with water from a jet striking against an edge of the apparatus. A reaction occurs when the water encounters the bubbles in the froth. The mineral particles react to the water. (Atoms and Ions). The mineral particles are therefore separated by means of this reaction.
  • the water jets act as a catalyst and cannot be compared with nozzles (now used in some apparatus).
  • the ore In the case of ore containing two different minerals such as lead and zinc, the ore is generally first concentrated to a co-concentrate, e . g. lead and zinc . Next comes the separation ( of the different minerals ) . As pure a concentrate as possible of the two minerals is aimed at . Lead may not be lost to the zinc, for instance, while the lead content in the lead concentrate shall also be as high as possible.
  • the apparatus In longitudinal direction the apparatus has two horizontal walls almost reaching each other (gap of 30 cm).
  • the wall over which the concentrate will flow is inclined more than the other. This is in order to get the froth that has collected below the wall 2 up to the wall 1, continuing from there up to the cleaning process.
  • the wall 2 inclines steeply towards wall 1 and air pipes are therefore required below wall 2 enabling the air bubbles to be forced or blown up to the gap where cleaning takes place.
  • the air pipes only blow in the froth (not in the pulp) with the object of keeping this wall free from splinters of wood, for instance, that might otherwise become lodged there.
  • the gap where the froth collects has an opening 30 cm wide.
  • the froth from wall 2 thus passes over to wall 1 where cleaning takes place. Since the air bubbles follow the inclined walls cleaning takes place there. Cleaning of the bubbles is effected by a water jet 3 striking against a plate of hard rubber or ceramic, thereby expanding and flushing clean the froth located between wall 1 and wall 4.
  • the pressure of the water jet is not high (the pressure can be varied).
  • Wall 4 has the same inclination as wall 1.
  • Four water pipes are used for each apparatus.
  • the water jet 5 can also be used on wall 4 to provide additional cleaning.
  • Slimmer dimension The use of water pipes minimizes the risk of their becoming clogged (often a problem). (Not to be compared with ordinary water nozzles).
  • the dimension of the water pipes may vary according to the size of the apparatus. Water nozzles used in previous apparatus are unnecessary with this method.
  • the inclination of wall 4 is the same as for wall 1 so that a gap is formed and the froth can ascend easily after cleaning.
  • the wall 6 is detachable to enable the apparatus to be opened for cleaning or repair work on the rotor, for instance. During operation the apparatus is almost entirely closed, only the gap being open.
  • the rotor 7 distributes air in the apparatus and causes currents in the pulp - necessary if the apparatus is to function and a froth bed be formed. Rotor dimensions vary from apparatus to apparatus depending on the size of the apparatus.
  • the airflow 8 is controlled by a valve or tap.
  • the level of the pulp 9 is controlled by slats which can be removed or replaced by more.
  • the concentrate formed flows on the upper side of wall 2 which has an extension at the top to enable the concentrate to run down more easily for collection in a container 11.
  • the water jets 3 function not only to clean the froth bath, but also cause a reaction between different mineral particles so that they separate (when separation of minerals is the object).
  • the PH value or degree of acidity also plays a part. A different PH value is required to separate several minerals from gangue.
  • the water jet in the apparatus must be exactly positioned in relation to the wall 1.
  • the pipe through which the water jet is expelled is therefore made stepless so that the jet can be adjusted up or down. It must not be altered sideways.
  • the pipe is fitted straight against wall 1.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Paper (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

L'invention se rapporte à un appareil de flottation qui comprend une partie inférieure de pulpe et une partie supérieure de mousse, laquelle s'écoule par drainage sur un bord horizontal supérieur de l'appareil. Lorsque le minerai contient du plomb et du zinc, le plomb contaminé par le zinc est évacué par drainage. La présente invention a pour but d'accroître la teneur en plomb de la mousse évacuée par drainage, ce qu'on obtient en laissant la mousse s'écouler par drainage vers le haut à travers un canal, lequel est conçu de préférence avec une section transversale rectangulaire et avec un angle d'inclinaison inférieur à 90° par rapport à la surface de la mousse. La mousse est en outre pulvérisée avant de quitter le canal, au moyen d'un jet d'eau au moins dirigé vers la partie de la paroi du canal la plus éloignée du bord de drainage du canal.
PCT/SE1993/000079 1992-02-03 1993-02-02 Appareil de flottation pour obtenir des concentres de minerais Ceased WO1993014876A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP93904425A EP0725684A1 (fr) 1992-02-03 1993-02-02 Appareil de flottation pour obtenir des concentres de minerais
FI943601A FI943601A7 (fi) 1992-02-03 1993-02-02 Flotaatiolaite malmin rikastamiseksi
NO942500A NO302157B1 (no) 1992-02-03 1994-07-01 Flottasjonsinnretning for oppredning av malmer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9200280-7 1992-02-03
SE9200280A SE508704C2 (sv) 1992-02-03 1992-02-03 Anordning vid flotationsapparat

Publications (1)

Publication Number Publication Date
WO1993014876A1 true WO1993014876A1 (fr) 1993-08-05

Family

ID=20385175

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1993/000079 Ceased WO1993014876A1 (fr) 1992-02-03 1993-02-02 Appareil de flottation pour obtenir des concentres de minerais

Country Status (5)

Country Link
EP (1) EP0725684A1 (fr)
FI (1) FI943601A7 (fr)
NO (1) NO302157B1 (fr)
SE (1) SE508704C2 (fr)
WO (1) WO1993014876A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2281521A (en) * 1993-09-06 1995-03-08 Supaflo Tech Pty Ltd Froth flotation device wherein wash water is dispersed into froth zone through porous membrane
RU2129049C1 (ru) * 1996-11-10 1999-04-20 Сибирский научно-исследовательский институт углеобогащения Флотационная машина
US6279749B1 (en) * 1999-02-10 2001-08-28 Voith Sulzer Papiertechnik Patent Gmbh Process and apparatus for removing solids from an aqueous paper fiber suspension
WO2003078013A3 (fr) * 2002-03-18 2003-12-24 Outokumpu Oy Dispositif et procede de flottation
US6793079B2 (en) * 2002-11-27 2004-09-21 University Of Illinois Method and apparatus for froth flotation
CN102179309A (zh) * 2010-12-27 2011-09-14 昆明理工大学 氧化锌矿控泡浮选方法
US20120061298A1 (en) * 2009-05-26 2012-03-15 Newcastle Innovation Limited Improved method and apparatus for froth flotation in a vessel with agitation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5039400A (en) * 1987-10-07 1991-08-13 Outokumpu Oy Flotation machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5039400A (en) * 1987-10-07 1991-08-13 Outokumpu Oy Flotation machine

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2281521A (en) * 1993-09-06 1995-03-08 Supaflo Tech Pty Ltd Froth flotation device wherein wash water is dispersed into froth zone through porous membrane
US5511669A (en) * 1993-09-06 1996-04-30 Supaflo Technologies Pty. Ltd Membrane washing apparatus for flotation device
GB2281521B (en) * 1993-09-06 1997-04-09 Supaflo Tech Pty Ltd Membrane washing apparatus for flotation device
RU2129049C1 (ru) * 1996-11-10 1999-04-20 Сибирский научно-исследовательский институт углеобогащения Флотационная машина
US6279749B1 (en) * 1999-02-10 2001-08-28 Voith Sulzer Papiertechnik Patent Gmbh Process and apparatus for removing solids from an aqueous paper fiber suspension
WO2003078013A3 (fr) * 2002-03-18 2003-12-24 Outokumpu Oy Dispositif et procede de flottation
US6793079B2 (en) * 2002-11-27 2004-09-21 University Of Illinois Method and apparatus for froth flotation
US7328806B2 (en) 2002-11-27 2008-02-12 University Of Illinois Apparatus for froth cleaning
US20120061298A1 (en) * 2009-05-26 2012-03-15 Newcastle Innovation Limited Improved method and apparatus for froth flotation in a vessel with agitation
CN102179309A (zh) * 2010-12-27 2011-09-14 昆明理工大学 氧化锌矿控泡浮选方法

Also Published As

Publication number Publication date
EP0725684A1 (fr) 1996-08-14
FI943601L (fi) 1994-08-02
NO942500D0 (no) 1994-07-01
FI943601A0 (fi) 1994-08-02
SE9200280L (sv) 1993-08-04
SE9200280D0 (sv) 1992-02-03
SE508704C2 (sv) 1998-10-26
FI943601A7 (fi) 1994-08-02
NO942500L (no) 1994-07-01
NO302157B1 (no) 1998-02-02

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