WO2012175803A4 - Permanent cathode and a method for treating the surface of a permanent cathode - Google Patents

Permanent cathode and a method for treating the surface of a permanent cathode Download PDF

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Publication number
WO2012175803A4
WO2012175803A4 PCT/FI2012/050637 FI2012050637W WO2012175803A4 WO 2012175803 A4 WO2012175803 A4 WO 2012175803A4 FI 2012050637 W FI2012050637 W FI 2012050637W WO 2012175803 A4 WO2012175803 A4 WO 2012175803A4
Authority
WO
WIPO (PCT)
Prior art keywords
permanent cathode
cathode plate
permanent
metal
plate
Prior art date
Application number
PCT/FI2012/050637
Other languages
French (fr)
Other versions
WO2012175803A3 (en
WO2012175803A2 (en
Inventor
Mari Lindgren
Henri Virtanen
Ville Nieminen
Original Assignee
Outotec 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 Outotec Oyj filed Critical Outotec Oyj
Priority to BR112013033245A priority Critical patent/BR112013033245A2/en
Priority to JP2014516406A priority patent/JP2014517159A/en
Priority to CN201280031101.4A priority patent/CN103748267A/en
Priority to MX2013014910A priority patent/MX2013014910A/en
Priority to AU2012273906A priority patent/AU2012273906B2/en
Priority to KR1020147001746A priority patent/KR20140024470A/en
Priority to KR1020157037113A priority patent/KR20160005798A/en
Priority to US14/127,484 priority patent/US20140131221A1/en
Priority to RU2013155581/02A priority patent/RU2566119C2/en
Priority to BG3665U priority patent/BG2816U1/en
Priority to CA2838877A priority patent/CA2838877A1/en
Priority to EP12802588.9A priority patent/EP2723920A4/en
Publication of WO2012175803A2 publication Critical patent/WO2012175803A2/en
Publication of WO2012175803A3 publication Critical patent/WO2012175803A3/en
Publication of WO2012175803A4 publication Critical patent/WO2012175803A4/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
    • C25B11/03—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form perforated or foraminous
    • C25B11/031—Porous electrodes
    • 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
    • C25C7/02—Electrodes; Connections thereof
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
    • 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
    • C25C7/06—Operating or servicing
    • C25C7/08—Separating of deposited metals from the cathode
    • 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34—Pretreatment of metallic surfaces to be electroplated
    • C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium

Abstract

The invention relates to a permanent cathode (1) to be used as an electrode in the electrowinning of metals, including a permanent cathode plate (4) at least partially made of steel and providing the possibility of electrochemically depositing metal from an electrolytic solution onto its surface (6), in which case the dimensions of the grain boundaries (7) on the surface (6) of the permanent cathode plate (4) are arranged to be suitable for the adhesion of deposited metal on the surface and the stripping of metal from the surface at least in a part of the surface that is in contact with the electrolyte. The invention also relates to a method for treating the surface of a permanent cathode.

Claims

AMENDED CLAIMS received by the International Bureau on 28 January 2013 (28.01.2013).
1. A permanent cathode (1) to be used as an electrode in the electro inning of metals, including a permanent cathode plate (4) at least partially made of steel and providing the possibility of electrochemically depositing metal from an electrolytic solution onto its surface (6, 6a, 6b), characterised in that the dimensions of the grain boundaries (7), such as grain size, width and depth, on the surface (6) of the permanent cathode plate (4) are arranged to be suitable for the adhesion of deposited metal on the surface and the stripping of metal from the surface at least in a part of the surface (6, 6a) that is in contact with the electrolyte.
A permanent cathode according to Claim 1 , characterised in that the grain size of the grains (8) in the permanent cathode plate (4) measured by the linear intercept method is 1 to 40 micrometres.
A permanent cathode according to Claim 1 or 2, characterised in that the average grain boundary width W of the permanent cathode plate is 1 to 3 micrometres.
A permanent cathode according to Claim 1 , 2 or 3, characterised in that the average grain boundary depth d of the permanent cathode plate is less than 1 micrometre.
A permanent cathode according to any one of Claims 1 to 4, characterised in that the permanent cathode plate (4) comprises a surface area (6a) with strong adhesion properties and a surface area (6b) with weak adhesion properties, said adhesion properties being dependent on the dimensions of the grain boundaries (7) in said surface area (6a, 6b).
6. A permanent cathode according to Claim 5, characterized in that the surface area (6b) with weak adhesion properties forms a part of the surface that is in contact with the electrolyte and that said surface area (6b) is located at a point where the stripping of metal deposit (1 1) is meant to start.
7. A permanent cathode according to any one of Claims 1 to 6, characterised in that the permanent cathode plate (4) is at least partially ferritic steel.
8. A permanent cathode according to any one of Claims 1 to 6, characterised in that the permanent cathode plate (4) is at least partially austenitic steel.
9. A permanent cathode according to any one of Claims 1 to 6, characterised in that the permanent cathode plate (4) is at least partially duplex steel.
10. An arrangement (9) to be used for the electrowinning of metals, including an electrolytic bath (3) containing an electrolytic solution in which anodes (2) and permanent cathodes (1) are alternately arranged, said permanent cathodes being supported in the bath by a support element (5), characterised in that the arrangement includes a permanent cathode (1) according to any one of Claims 1 to 9.
11. A method for treating the surface (6) of a permanent cathode plate (4), in which the permanent cathode plate (4) is formed at least partially of steel plate, characterised in that the grain boundaries (7) of the permanent cathode plate surface (6) on at least a part of the surface (6, 6a, 6b) that is in contact with the electrolyte are treated chemically or electrochemically to achieve the desired surface properties for the adhesion of deposited metal on the surface and the stripping of metal from the surface.
12. A method according to Claim 11 , characterised in that the surface (6) of the permanent cathode plate (4) is treated until the separating force desired for the surface is achieved.
13. A method according to Claim 11 or 12, characterised in that the surface of the permanent cathode plate is treated by etching.
14. A method according to Claim 11 , 12 or 13, characterized in that different areas (6a, 6b) of the permanent cathode plate surface that are in contact with the electrolyte are treated differently to produce an area (6a) with strong adhesion and an area (6b) with weak adhesion.
15. A method according to Claim 14, characterized in that the area (6b) with weak adhesion is produced on a part of the cathode plate surface where the stripping of metal deposit (11) is meant to start.
PCT/FI2012/050637 2011-06-23 2012-06-19 Permanent cathode and a method for treating the surface of a permanent cathode WO2012175803A2 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
BR112013033245A BR112013033245A2 (en) 2011-06-23 2012-06-19 permanent cathode is a method for treating the surface of a permanent cathode
JP2014516406A JP2014517159A (en) 2011-06-23 2012-06-19 Permanent cathode and surface treatment method of permanent cathode
CN201280031101.4A CN103748267A (en) 2011-06-23 2012-06-19 A permanent cathode and a method for treating the surface of a permanent cathode
MX2013014910A MX2013014910A (en) 2011-06-23 2012-06-19 Permanent cathode and a method for treating the surface of a permanent cathode.
AU2012273906A AU2012273906B2 (en) 2011-06-23 2012-06-19 Permanent cathode and a method for treating the surface of a permanent cathode
KR1020147001746A KR20140024470A (en) 2011-06-23 2012-06-19 Permanent cathode and a method for treating the surface of a permanent cathode
KR1020157037113A KR20160005798A (en) 2011-06-23 2012-06-19 Permanent cathode and a method for treating the surface of a permanent cathode
US14/127,484 US20140131221A1 (en) 2011-06-23 2012-06-19 Permanent cathode and a method for treating the surface of a permanent cathode
RU2013155581/02A RU2566119C2 (en) 2011-06-23 2012-06-19 Constant cathode and treatment method of constant cathode surface
BG3665U BG2816U1 (en) 2011-06-23 2012-06-19 Permanent cathedine
CA2838877A CA2838877A1 (en) 2011-06-23 2012-06-19 Permanent cathode and a method for treating the surface of a permanent cathode
EP12802588.9A EP2723920A4 (en) 2011-06-23 2012-06-19 Permanent cathode and a method for treating the surface of a permanent cathode

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20110210A FI20110210L (en) 2011-06-23 2011-06-23 Permanent cathode and method for treating the surface of the permanent cathode
FI20110210 2011-06-23

Publications (3)

Publication Number Publication Date
WO2012175803A2 WO2012175803A2 (en) 2012-12-27
WO2012175803A3 WO2012175803A3 (en) 2013-02-21
WO2012175803A4 true WO2012175803A4 (en) 2013-04-04

Family

ID=44206746

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2012/050637 WO2012175803A2 (en) 2011-06-23 2012-06-19 Permanent cathode and a method for treating the surface of a permanent cathode

Country Status (17)

Country Link
US (1) US20140131221A1 (en)
EP (1) EP2723920A4 (en)
JP (1) JP2014517159A (en)
KR (2) KR20140024470A (en)
CN (1) CN103748267A (en)
AT (1) AT15652U1 (en)
AU (1) AU2012273906B2 (en)
BG (1) BG2816U1 (en)
BR (1) BR112013033245A2 (en)
CA (1) CA2838877A1 (en)
CL (1) CL2013003666A1 (en)
ES (1) ES1186663Y (en)
FI (1) FI20110210L (en)
MX (1) MX2013014910A (en)
PE (1) PE20142001A1 (en)
RU (1) RU2566119C2 (en)
WO (1) WO2012175803A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI125980B (en) * 2013-12-18 2016-05-13 Outotec Finland Oy Procedure for maintenance of used cathode plates
FI128294B (en) 2015-01-27 2020-02-28 Outokumpu Oy Method for manufacturing a plate material for electrochemical process
CN109750322A (en) * 2019-03-15 2019-05-14 北京矿冶科技集团有限公司 A kind of enclosed type electrolytic tank permanent cathode

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1036536A (en) * 1974-02-08 1978-08-15 Aubrey S. Gendron Electrodeposition of thick nickel deposits on permanent cathode blanks
JPS52110009U (en) * 1976-02-17 1977-08-22
CA1081160A (en) * 1977-01-28 1980-07-08 Aubrey S. Gendron Anodized steel cathode blanks
FI108546B (en) * 1998-09-24 2002-02-15 Outokumpu Oy Method for making cathode suspension rod
ITMI20020535A1 (en) * 2002-03-14 2003-09-15 De Nora Elettrodi Spa OXYGEN DEVELOPMENT ANODE AND ITS SUBSTRATE
US7807028B2 (en) * 2005-03-09 2010-10-05 Xstrata Queensland Limited Stainless steel electrolytic plates
FI121996B (en) * 2007-02-13 2011-07-15 Outotec Oyj Method of manufacturing a cathode plate and cathode plate
US8038855B2 (en) * 2009-04-29 2011-10-18 Freeport-Mcmoran Corporation Anode structure for copper electrowinning

Also Published As

Publication number Publication date
WO2012175803A3 (en) 2013-02-21
AU2012273906A1 (en) 2014-02-06
EP2723920A4 (en) 2015-04-29
BG2816U1 (en) 2017-11-15
JP2014517159A (en) 2014-07-17
RU2566119C2 (en) 2015-10-20
US20140131221A1 (en) 2014-05-15
FI20110210A0 (en) 2011-06-23
KR20140024470A (en) 2014-02-28
FI20110210L (en) 2012-12-24
BR112013033245A2 (en) 2017-03-01
MX2013014910A (en) 2014-02-19
CL2013003666A1 (en) 2014-08-01
RU2013155581A (en) 2015-07-27
CN103748267A (en) 2014-04-23
KR20160005798A (en) 2016-01-15
CA2838877A1 (en) 2012-12-27
ES1186663Y (en) 2017-09-27
EP2723920A2 (en) 2014-04-30
WO2012175803A2 (en) 2012-12-27
ES1186663U (en) 2017-07-03
PE20142001A1 (en) 2014-12-24
AT15652U1 (en) 2018-04-15
AU2012273906B2 (en) 2015-11-26

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