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WO2008028796A1 - Cellule de flottation avec revêtement résistant a l'usure - Google Patents

Cellule de flottation avec revêtement résistant a l'usure Download PDF

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Publication number
WO2008028796A1
WO2008028796A1 PCT/EP2007/058600 EP2007058600W WO2008028796A1 WO 2008028796 A1 WO2008028796 A1 WO 2008028796A1 EP 2007058600 W EP2007058600 W EP 2007058600W WO 2008028796 A1 WO2008028796 A1 WO 2008028796A1
Authority
WO
WIPO (PCT)
Prior art keywords
flotation cell
coating
separating liquid
particles
liquid container
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/EP2007/058600
Other languages
German (de)
English (en)
Inventor
Dietmar Gawlok
Michael Riebensahm
Thomas SÖNTGEN
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2008028796A1 publication Critical patent/WO2008028796A1/fr
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
    • B03D1/14—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
    • B03D1/1443—Feed or discharge mechanisms for flotation tanks
    • B03D1/1456—Feed mechanisms for the slurry
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
    • C25D15/02—Combined electrolytic and electrophoretic processes with charged materials
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/56—Electroplating: Baths therefor from solutions of alloys
    • C25D3/562—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of iron or nickel or cobalt

Definitions

  • the invention relates to a flotation cell with a separating liquid container, in particular for the concentration of metal ores.
  • Such a flotation cell is generally used for separating particles of different surface wettability in a solid mixture.
  • the solid mixture is introduced in the form of a suspension or slurry together with a separating liquid in the separating liquid container and finely dispersed permeated with gas.
  • the fine distribution of the introduced gas is generated by means of a stirrer or a tangential introduction of the suspension, so that a total of turbulent conditions occur.
  • Those particles having a low surface wettability with respect to the release liquid are affected by gas bubbles and carried upwards, while the other particles which have a high surface wettability bezüg ⁇ Lich the separating liquid drop.
  • a foam which bezüg ⁇ Lich the particles with low surface wettability is up concentrated. So that the foam stabilized and Tar ⁇ can be exhausted, it is common for the separating liquid foam stabilizers such as, for example, accompanied by surfactants.
  • a flotation cell is used for concentration of metal ores, wherein the metal ores contained in a fine-grained mixture are separated from accompanying rock with the aid of gas bubbles.
  • a separation liquid is used herein at ⁇ usually water, which mixes are optionally beige foam stabilizer as oil or other hydrocarbons.
  • a flotation cell is used in particular for on ⁇ concentration of copper, iron, molybdenum and zinc ores.
  • This object is for a flotation cell, in particular for the concentration of a metal ore, the aforementioned
  • the coating for the flotation cell results in an increased service life, so that overall the manufacturing costs are additionally overcompensated by reduced maintenance and repair costs.
  • the flotation cell may further comprise a number of guide and supply elements, which are also arranged in the separating liquid container and thus come into contact with the separating liquid itself. Therefore, to increase the service life of the flotation cell, it is recommended that these guiding and Zu einsele- elements at least in a portion that comes with the Trennflüs ⁇ ing into contact, to be provided with the coating.
  • the guide and supply elements can be coated as a whole.
  • a feed element can be, for example, a pipe with which the suspension comprising the solid mixture is introduced into the separating liquid tank.
  • guide elements for example walls or pipes must be mentioned that on the ⁇ increased settling zones of the gas bubbles in the liquid separator create.
  • nickel-cobalt alloy As another alloying element, for example, iron or cobalt can be used. In this case, the use of cobalt is recommended due to the overall achievable higher hardness.
  • the nickel content in a nickel-cobalt alloy is preferably 65 to 97% by volume, in particular 90 to 97% by volume. If more cobalt introduced, the matrix is more brittle, where ⁇ at the same time decreases the temperature resistance.
  • hard material particles expediently boron carbide, Dia ⁇ mantpumble or graphite particles are embedded.
  • the proportion of the hard material particles in the coating is preferably 5 to 50% by volume, more preferably 10 to 30% by volume.
  • the incorporated hard material particles form part of the surface of the coating or even protrude slightly above the metallic matrix, so that the hard material particles as such decisively determine the surface properties of the coating, the hardness and abrasion resistance.
  • the hard material particles have a size in the nanoscale range or in the micrometer range. Particularly good properties can be achieved if the hard particles in particular have a size of 100 to 5000 nm.
  • the layer thickness of the coating is more than 0.2 mm, preferably 1 to 2 mm.
  • the laminations are possible in a range between approximately 50 ⁇ m and 6 mm and are also provided depending on the application.
  • the coating is applied electrolytically to the inner wall of the separation liquid container.
  • a galvanic coating By means of a galvanic coating, a good connection to the metallic main body of the separating liquid container or of the guide and supply elements is achieved.
  • the electrolytic deposition offers because they represent ⁇ represents a known and easily controllable coating process.
  • the aforementioned object is further according to the invention for a method for producing a flotation cell characterized ge ⁇ solves that the inner wall of a separation liquid container, provide at least a partial area which comes into contact with the separating liquid having a coating of a metallic matrix is provided with embedded hard material particles ,
  • an electrolytic application method is selected as the coating method .
  • to be coated separation is optionally connected liquid container together with the therein guiding and supply elements as electrical cathode and as an anode is a consumption ⁇ electrode consisting of the applied metal material, thus in particular of nickel or of a Ni ⁇ ckel alloy , intended.
  • an electrolyte solution is introduced into which the hard particles to be stored are inserted.
  • the introduced hard particles are carried along with the example ⁇ , from the anode to the inner wall of the separation liquid container the wandering metal ions and homogeneous and evenly incorporated into the coating structure.
  • FIG. 1 shows a partial section of a flotation cell and FIG. 2 shows a plan view of the flotation cell according to FIG. 1
  • the flotation cell 1 shows in a partial section the basic structure of a flotation cell 1 for the concentration of metal ores.
  • the flotation cell 1 has a funnel-shaped separating liquid container 3 with a circular cross-section, on the upper part of which a total of four supply lines 4 for the introduction of the solid mixture to be separated are arranged approximately tangentially.
  • an outlet 5 is arranged to the outlet of the sunken particles from the mixture of solids.
  • the individual leads 4 is fed to an aqueous suspension of finely ground ore mining.
  • the suspension has approximately the same volume fraction of water as ore.
  • gas is supplied to the supply lines 4 with the suspension at the same time via the hose system 7, such as air or nitrogen.
  • gas is also introduced into the introduced, ro ⁇ animal suspension by means of the gas supply lines 9. Even thus the door ⁇ bulenz is increased overall.
  • metal ores Having accompanying rock, such as sand an increased hydraulic ⁇ phobia, attach themselves to the metal ores gas bubbles so that in spite of the opposite sand higher density metal ⁇ ores rise upward and form on the surface oftientbrach- th suspension a foam.
  • Sand sinks despite the lower density compared to the metal ore.
  • oil or another additive is added to the aqueous suspension.
  • the resulting foam which contains a concentrated proportion of metal ores, is passed via a drain 10 into a collection container 12 for further use.
  • an inner tube 14 is arranged in the interior of the separating liquid container 3, which constitutes a partition opposite to the tangentially inlets 4.
  • the resulting foam passes over the surface of Trennflüs ⁇ ing into a Konzentratsammeiring 15 which opens into the aforementioned flow 10th
  • the inner tube 14 and the leads 4 to Errei ⁇ chen, the inner wall of the separation liquid container 3 and the inner tube 14 and disposed in the interior of the separating liquid tank 3 parts of the leads 4 with egg ⁇ ner provided electrolytically applied coating of a nickel-cobalt alloy, in which boron carbide is introduced as a hard material particles.
  • the content of cobalt in the nickel-cobalt alloy is 3 to 10% by volume.
  • the hard particles have a diameter in the nanometer or in the micrometer range. Their share of the coating is up to 50 vol .-%.
  • the coating is applied with a layer thickness between 0.2 and 2 mm.
  • FIG 1 the flotation cell is shown in FIG 1 in an on ⁇ view.
  • the funnel-shaped separating liquid container 3 with the supply lines 4 arranged in the upper region and oriented tangentially for the insertion supply of the solid mixture.
  • the concentrate collecting ring 15 is visible in the plan.
  • the entire inner wall of the funnel-shaped separating liquid container 3 is coated with the coating 17 of a matrix of a nickel-cobalt alloy with embedded boron carbide particles, as indicated in FIG. Due to the high wear resistance and corrosion resistance of Be ⁇ coating 17 is used as a material for the Trenn nowadayskeitsbe- container a cheaper steel, since this itself does not come with the separating liquid in contact or is protected by the coating 17 from being affected by the separating fluid.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biotechnology (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

L'invention concerne une cellule de flottation (1) ainsi qu'un procédé de fabrication d'une cellule de flottation (1), dans laquelle la paroi interne d'un récipient de phase liquide stationnaire (3) est dotée au moins dans une zone partielle qui entre en contact avec la phase de liquide stationnaire, d'un revêtement (17) d'une matrice métallique comprenant des particules de substance dure incorporées. Ceci permet d'augmenter la durée d'utilisation de la cellule de flottation (1).
PCT/EP2007/058600 2006-09-04 2007-08-20 Cellule de flottation avec revêtement résistant a l'usure Ceased WO2008028796A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006041458A DE102006041458A1 (de) 2006-09-04 2006-09-04 Flotationszelle
DE102006041458.6 2006-09-04

Publications (1)

Publication Number Publication Date
WO2008028796A1 true WO2008028796A1 (fr) 2008-03-13

Family

ID=38719480

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/058600 Ceased WO2008028796A1 (fr) 2006-09-04 2007-08-20 Cellule de flottation avec revêtement résistant a l'usure

Country Status (2)

Country Link
DE (1) DE102006041458A1 (fr)
WO (1) WO2008028796A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2047643A (en) * 1934-12-15 1936-07-14 Minerals Separation North Us Flotation separation apparatus
GB503016A (en) * 1937-09-24 1939-03-24 Stanley Tucker Improvements in or relating to agitation and aeration apparatus
US4606822A (en) * 1984-11-01 1986-08-19 Miller Francis G Vortex chamber aerator
EP0984082A1 (fr) * 1998-09-01 2000-03-08 Metallveredlung GmbH & Co. KG Procédé de revêtement des pièces
US6073775A (en) * 1999-01-19 2000-06-13 Liu; Jiongtian Cyclonic-static micro-bubble floatation apparatus and method
DE20023035U1 (de) * 2000-03-17 2002-11-07 Kämpfer, Hans-Peter, 35745 Herborn Als Zyklon ausgebildeter Fliehkraftabscheider
EP1502652A1 (fr) * 2003-07-02 2005-02-02 Petreco International Limited Garniture d'un hydrocyclone resistante a l'erosion
WO2005110606A1 (fr) * 2004-04-30 2005-11-24 The Board Of Trustees Of The University Of Illinois Dispositif de flottation et procede de flottation par mousse
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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2617510B1 (fr) * 1987-07-01 1991-06-07 Snecma Procede de codeposition electrolytique d'une matrice nickel-cobalt et de particules ceramiques et revetement obtenu
DE4022831C2 (de) * 1990-07-18 2000-07-06 Deutz Ag Vorrichtung zum Begasen von Flüssigkeiten
ZA919256B (en) * 1990-11-23 1992-11-25 Atomaer Pty Ltd Gas particle formation

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2047643A (en) * 1934-12-15 1936-07-14 Minerals Separation North Us Flotation separation apparatus
GB503016A (en) * 1937-09-24 1939-03-24 Stanley Tucker Improvements in or relating to agitation and aeration apparatus
US4606822A (en) * 1984-11-01 1986-08-19 Miller Francis G Vortex chamber aerator
EP0984082A1 (fr) * 1998-09-01 2000-03-08 Metallveredlung GmbH & Co. KG Procédé de revêtement des pièces
US6073775A (en) * 1999-01-19 2000-06-13 Liu; Jiongtian Cyclonic-static micro-bubble floatation apparatus and method
DE20023035U1 (de) * 2000-03-17 2002-11-07 Kämpfer, Hans-Peter, 35745 Herborn Als Zyklon ausgebildeter Fliehkraftabscheider
EP1502652A1 (fr) * 2003-07-02 2005-02-02 Petreco International Limited Garniture d'un hydrocyclone resistante a l'erosion
WO2005110606A1 (fr) * 2004-04-30 2005-11-24 The Board Of Trustees Of The University Of Illinois Dispositif de flottation et procede de flottation par mousse
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

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
BROOMAN E W: "COMPLIANT ELECTRODEPOSITED AND ELECTROLESS NANO-STRUCTURED AND NANO-COMPOSITE COATINGS TO REPLACE CHROMIUM COATINGS", GALVANOTECHNIK, EUGEN G.LEUZE VERLAG, SAULGAU/WURTT, DE, vol. 26, no. 12, December 2005 (2005-12-01), pages 2843 - 2853, XP001501535, ISSN: 0016-4232 *
CORDES H: "DIE PNEUMATISCHE FLOTATION - EINE ALTERNATIVE UND ERGAENZUNG ZUR KONVENTIONELLEN FLOTATION. DEVELOPMENT OF PNEUMATIC FLOTATION CELLSTO THEIR PRESENT DAY STATUS", AUFBEREITUNGS TECHNIK, VERLAG FUER AUFBEREITUNG, WIESBADEN, DE, vol. 38, no. 2, February 1997 (1997-02-01), pages 69 - 78,80, XP000679518, ISSN: 0004-783X *

Also Published As

Publication number Publication date
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