EP2183409A2 - Procédé pour faire fonctionner des piles électrolytiques au cuivre - Google Patents

Procédé pour faire fonctionner des piles électrolytiques au cuivre

Info

Publication number
EP2183409A2
EP2183409A2 EP08782805A EP08782805A EP2183409A2 EP 2183409 A2 EP2183409 A2 EP 2183409A2 EP 08782805 A EP08782805 A EP 08782805A EP 08782805 A EP08782805 A EP 08782805A EP 2183409 A2 EP2183409 A2 EP 2183409A2
Authority
EP
European Patent Office
Prior art keywords
electrolyte
cell
electrode
copper
inlet
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.)
Granted
Application number
EP08782805A
Other languages
German (de)
English (en)
Other versions
EP2183409B1 (fr
Inventor
Andreas Filzwieser
Iris Filzwieser
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.)
Mettop GmbH
Original Assignee
Mettop GmbH
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 Mettop GmbH filed Critical Mettop GmbH
Priority to PL08782805T priority Critical patent/PL2183409T3/pl
Publication of EP2183409A2 publication Critical patent/EP2183409A2/fr
Application granted granted Critical
Publication of EP2183409B1 publication Critical patent/EP2183409B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells

Definitions

  • the invention relates to a method for operating copper electrolysis cells, which comprise a plurality of vertically and mutually parallel anode and cathode plates, a longitudinal electrolyte inlet and an electrolyte effluent, and a novel copper electrolysis cell.
  • m is the mass of copper produced in g
  • M the molar mass of copper in g / mol
  • i the current density in A / m 2
  • A the electrode surface in m 2
  • t the time in s
  • z the valence of the reaction ions involved
  • F the Faraday constant in As / mol.
  • the currently technically feasible current densities are, for example, in a copper refining electrolysis at a maximum of 350 A / m 2 . This value results from the fact that in a technical electrolysis cell only about 30-40% of the theoretical limiting current density can be driven.
  • This theoretical limiting current density io rence (equation 2) is a function of the copper ion concentration in the electrolyte (c °) and the diffusion layer thickness 5 N at the electrode. N, the number of ions involved in the process, F, the Faraday constant and D, the diffusion coefficient, are constant.
  • the types of refining electrolysis cells used today are distinguished by the fact that the electrolyte is fed in on the front side and removed again on the opposite end side.
  • the main flow therefore takes place between the cell wall and the electrodes or the cell bottom and the lower edges of the electrodes.
  • This externally applied flow also called forced convection
  • the flow between the electrodes is determined by the natural convection that results from the density difference of the electrolyte in front of the cathodes (lighter electrolyte due to depletion of copper ions) and before the anodes (heavier electrolyte due to the accumulation of copper ions).
  • double or multi-walled intermediate walls are arranged with openings distributed over the entire width, which are located on one side at the level of the cathode lower edge and / or slightly upwards and on the other side at the level of the electrolyte level and / or slightly downwards.
  • containers for electrolytic metal extraction are known in which, to achieve a parallel flow, the electrolyte inlet and outlet into or out of the electrode space is effected by perforated plates arranged parallel to the longitudinal walls.
  • a parallel partition with openings for the passage of electrolyte into the electrode space is arranged only on one longitudinal wall.
  • the passage openings are distributed over the entire electrode height and are aligned with the electrode interstices.
  • a relatively simple means of achieving parallel flow in conventional electrolysis cells is the provision of tubular electrolyte supply and drainage devices which direct the electrolyte in opposite directions between the bath longitudinal walls and the electrode side edges in the two free spaces. Due to the larger cathode width, a jam of the electrolyte occurs in front of the cathode side edges, as a result of which the latter partially flows into the respective electrode gap.
  • electrolytic bath in which the parallel flow is achieved by an inlet of the electrolyte from the bath floor.
  • an electrolytic cell is described with longitudinal electrolyte inlet, in which on one or both sides a over the entire length of the bath extending, just below the cathode lower edge extending, down and closed at the sides, above the electrolyte level open electrolyte inlet box is attached which has at the side facing the electrodes horizontally and parallel to the electrodes aligned füreriesöffhungen, extending in the region of the lower cathode edges over a extend certain area of the cathode spaces.
  • the cross-sectional area of all the passage openings is smaller than the open horizontal cross-sectional area at the top of the electrolyte inlet box in order to achieve a slight overpressure.
  • the channel cell requires a large pump capacity to achieve the high flow rates.
  • To separate the entrained anode sludge continuous electrolyte filtration is required.
  • Leiteinbauten as a flow straightener and the arrangement of appropriately shaped partitions is associated with a very large material and manufacturing effort.
  • the hanging of these baths with the electrodes requires great care, since the desired electrolyte circulation is guaranteed only if the required geometric conditions are precisely met.
  • the present invention aims to avoid the above-mentioned disadvantages and problems of the prior art and has as its object to provide a method for operating (conventional) copper electrolysis cells and a copper electrolysis cell with which higher current densities and thus higher current yields than in State of the art are possible, the cathode quality, for example but not affected by fluidization of the anode sludge, disturbance of anode sludge deposition, or poor inhibitor distribution. Likewise, extensive changes to and complex installations in the cell should be avoided.
  • This object is achieved in a first aspect in a method of the type mentioned above in that the electrolyte via the electrolyte inlet horizontally and parallel to the electrodes in each electrode gap at the level of the lower third of the electrodes at a speed of 0.3 to 1, 0 m / s is flowed, wherein the cathode plates are arranged stationary relative to the inflow direction.
  • the electrolyte is flowed into the cell at a rate of 0.3 to 0.6 m / s.
  • a further improvement of the method is possible if the electrolyte is not applied as usual and applied in the examples on the front side of the cell but longitudinally drained.
  • the erfmdungswashe method has in particular the additional advantage that it can be carried out even with existing electrolysis cells without much effort with a few changes to the existing facilities.
  • a copper electrolytic cell comprising a plurality of vertically and parallelly disposed anode and cathode plates, a longitudinal electrolyte inlet, and an electrolyte drain, characterized in that the electrolyte inlet is located on a longitudinal wall thereof Cell which extends into the region of the electrode lower edge and comprises a closed feed box which can be attached to the end faces of the cell and can be connected to an electrolyte source and means for stationary arrangement of each cathode plate and in the lower third of the electrode height extending and corresponding respectively to the electrode gap Regions with at least one opening, in particular nozzle, for the directed supply of electrolyte is provided.
  • the means for the fixed arrangement of the cathode plates are designed as means for vertical guidance.
  • the means for vertical guidance are formed as circular discs or wheels, wherein the cathode plates are each centered between two adjacently arranged and spaced discs or wheels.
  • the electrolyte drain is arranged on the front side.
  • it can also advantageously be arranged longitudinally.
  • the electrolyte feed box used in the cell according to the invention can also be used advantageously in conventional electrolysis cells already ordering.
  • FIG. 2 shows a schematic representation of a copper electrolysis cell according to the present invention, in which, for reasons of better recognizability, the electrolyte feed box according to the invention was itself highlighted in the drawing in relation to the electrolysis cell.
  • the closed inlet box 1 extends along a side wall 3 of the bath 2 and is attached to the end walls 4 of the bath 2 fastened in the cell, wherein the Einh brieflyen 5 simultaneously serve the supply and discharge of the electrolyte in the actual feed box.
  • the inlet box 1 is provided with an electrolyte source, e.g. via a flange 6, connectable.
  • the inlet box 1 is arranged so deep in the cell that it extends into the region of the electrode lower edge.
  • openings in particular nozzles 7, are arranged, wherein at least one opening is located in each area corresponding to the electrode gap and extending over the lower third of the electrode height (FIG. 3).
  • the electrolyte is flowed into the cell in the lower area of the electrode gap at a speed of 0.3 to 1.0 m / s in order to achieve the advantageous flow guidance mentioned above.
  • the stationary arrangement is achieved by means for vertical guidance of the cathode plates, which are formed as circular discs or wheels 8, wherein the cathode plates 9 are each centered between two adjacent and spaced discs or wheels (Fig. 4).
  • the cathode plates which are formed as circular discs or wheels 8, wherein the cathode plates 9 are each centered between two adjacent and spaced discs or wheels (Fig. 4).
  • a conventional industrial copper electrolysis cell was equipped with an electrolyte inlet according to the invention comprising a feed box as described above.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

La présente invention concerne un procédé pour faire fonctionner des piles électrolytiques au cuivre comprenant une pluralité de plaques d'anode et de cathode disposées perpendiculairement et parallèlement entre elles, un élément d'amenée d'électrolyte disposé longitudinalement et un élément d'évacuation d'électrolyte. Selon l'invention, on fait circuler l'électrolyte par l'élément d'amenée d'électrolyte horizontalement et parallèlement aux électrodes dans chaque espace intermédiaire entre électrodes respectivement à la hauteur du tiers inférieur des électrodes à une vitesse de 0,3 à 1,0 m/s, les plaques de cathode étant disposées en un emplacement fixe vis-à-vis de la direction de circulation. On obtient ainsi un guidage optimisé du flux de l'électrolyte vis-à-vis des électrodes, ce qui conduit à une augmentation de la densité de courant limite.
EP08782805A 2007-08-27 2008-08-07 Procédé pour faire fonctionner des cellules électrolytiques au cuivre Active EP2183409B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08782805T PL2183409T3 (pl) 2007-08-27 2008-08-07 Sposób działania elektrolizerów do elektrolizy miedzi

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0133707A AT505700B1 (de) 2007-08-27 2007-08-27 Verfahren zum betreiben von kupfer-elektrolysezellen
PCT/AT2008/000277 WO2009026598A2 (fr) 2007-08-27 2008-08-07 Procédé pour faire fonctionner des piles électrolytiques au cuivre

Publications (2)

Publication Number Publication Date
EP2183409A2 true EP2183409A2 (fr) 2010-05-12
EP2183409B1 EP2183409B1 (fr) 2011-04-20

Family

ID=40377687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08782805A Active EP2183409B1 (fr) 2007-08-27 2008-08-07 Procédé pour faire fonctionner des cellules électrolytiques au cuivre

Country Status (11)

Country Link
US (1) US8454818B2 (fr)
EP (1) EP2183409B1 (fr)
JP (1) JP5227404B2 (fr)
CN (1) CN101376990B (fr)
AT (2) AT505700B1 (fr)
AU (1) AU2008291662B2 (fr)
CA (1) CA2696635C (fr)
DE (1) DE502008003297D1 (fr)
ES (1) ES2365376T3 (fr)
PL (1) PL2183409T3 (fr)
WO (1) WO2009026598A2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201112606D0 (en) 2011-07-22 2011-09-07 Johnson Matthey Plc Desulphurisation materials
JP5632340B2 (ja) * 2011-08-05 2014-11-26 Jx日鉱日石金属株式会社 水酸化インジウム及び水酸化インジウムを含む化合物の電解製造装置及び製造方法
CN103255443B (zh) * 2013-05-06 2015-11-25 阳谷祥光铜业有限公司 超高电流密度电解或电积槽
CN104018191B (zh) * 2014-06-16 2017-01-11 南华大学 带流量控制管的电解槽
JP6410131B2 (ja) * 2014-07-31 2018-10-24 佐々木半田工業株式会社 錫の高電流密度電解精製法
CN104831319A (zh) * 2015-05-28 2015-08-12 杭州三耐环保科技股份有限公司 一种顶部进液双向平行流电解槽及其使用方法
CN105506670B (zh) * 2015-12-18 2018-03-23 阳谷祥光铜业有限公司 一种铜电解或铜电积的装置与运行方法
GB201603224D0 (en) 2016-02-24 2016-04-06 Barker Michael H And Grant Duncan A Equipment for a metal electrowinning or liberator process and way of operating the process
JP7150769B2 (ja) * 2020-01-30 2022-10-11 Ｊｘ金属株式会社 電解装置及び電解方法
JP7150768B2 (ja) * 2020-01-30 2022-10-11 Ｊｘ金属株式会社 電解装置及び電解方法

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US3558466A (en) * 1968-03-04 1971-01-26 Kennecott Copper Corp Electrolytic cell
JPS4919003Y1 (fr) * 1970-01-22 1974-05-21
US3682809A (en) * 1970-02-24 1972-08-08 Kennecott Copper Corp Electrolytic cell constructed for high circulation and uniform flow of electrolyte
BE771215A (fr) * 1970-06-24 1971-12-16 Mansfeld Kom Wilhelm Veb Bain d'electrolyse pour le raffinage electrolytique du cuivre
JPS5237602Y2 (fr) * 1972-05-29 1977-08-26
DD109031A1 (fr) * 1973-11-22 1974-10-12
US3966567A (en) * 1974-10-29 1976-06-29 Continental Oil Company Electrolysis process and apparatus
DD125714A1 (fr) 1976-04-21 1977-05-11
DE3469190D1 (en) * 1983-11-08 1988-03-10 Holzer Walter Process and apparatus for separating, for example, copper from a liquid electrolyte introduced into a pluricellular electrolyser
JPH0768629B2 (ja) * 1987-07-06 1995-07-26 三菱マテリアル株式会社 ユニット化された極板を用いた電解方法
JPH0389166U (fr) * 1989-12-25 1991-09-11
US5066379A (en) * 1990-06-14 1991-11-19 Corrosion Technology, Inc. Container for corrosive material
US5492608A (en) * 1994-03-14 1996-02-20 The United States Of America As Represented By The Secretary Of The Interior Electrolyte circulation manifold for copper electrowinning cells which use the ferrous/ferric anode reaction
US5855756A (en) * 1995-11-28 1999-01-05 Bhp Copper Inc. Methods and apparatus for enhancing electrorefining intensity and efficiency
JP2002105684A (ja) * 2000-09-29 2002-04-10 Dowa Mining Co Ltd 電解方法及びこれに使用する電解槽

Non-Patent Citations (1)

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Title
See references of WO2009026598A2 *

Also Published As

Publication number Publication date
CN101376990A (zh) 2009-03-04
ATE506467T1 (de) 2011-05-15
CA2696635A1 (fr) 2009-03-05
ES2365376T3 (es) 2011-10-03
WO2009026598A3 (fr) 2009-08-13
US8454818B2 (en) 2013-06-04
CA2696635C (fr) 2014-10-07
AT505700B1 (de) 2009-12-15
US20110056842A1 (en) 2011-03-10
EP2183409B1 (fr) 2011-04-20
DE502008003297D1 (de) 2011-06-01
AT505700A1 (de) 2009-03-15
CN101376990B (zh) 2012-09-05
JP5227404B2 (ja) 2013-07-03
AU2008291662A1 (en) 2009-03-05
JP2010537051A (ja) 2010-12-02
PL2183409T3 (pl) 2011-11-30
AU2008291662B2 (en) 2011-10-06
WO2009026598A2 (fr) 2009-03-05

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