WO2020005147A1 - Dispositif de plaque de cathode - Google Patents

Dispositif de plaque de cathode Download PDF

Info

Publication number
WO2020005147A1
WO2020005147A1 PCT/SE2019/050629 SE2019050629W WO2020005147A1 WO 2020005147 A1 WO2020005147 A1 WO 2020005147A1 SE 2019050629 W SE2019050629 W SE 2019050629W WO 2020005147 A1 WO2020005147 A1 WO 2020005147A1
Authority
WO
WIPO (PCT)
Prior art keywords
cathode
edge
edge protection
cathode plate
formation
Prior art date
Application number
PCT/SE2019/050629
Other languages
English (en)
Inventor
Erik Fahlgren
Original Assignee
Teamx Ab
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 Teamx Ab filed Critical Teamx Ab
Priority to EP19826115.8A priority Critical patent/EP3814550A4/fr
Publication of WO2020005147A1 publication Critical patent/WO2020005147A1/fr

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
    • 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
    • C25C1/12—Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper

Definitions

  • the invention relates to a device for use with a cathode plate in a process for utilisation of metal, for example copper, by way of electrolysis as defined in the preamble of the independent patent claim 1.
  • Copper is most often found in chalcopyrite and sulfide ores. Silicate, sulfate and carbonate ores also contain copper. Due to the low content of copper in these ores, it is necessary to concentrate them before electrolysis.
  • the methods that are used for concentrating copper ore include heating in oven or reacting them with sulfuric acid.
  • Electrolysis improves the properties of copper as an electrical conductor. Electric equipment often contains electrolytic copper. Copper is also easy to pull and shape into pipes. Electrolytic copper has undergone refining or purification by means of electrolysis. Purification by means of electrolysis is the simplest way of obtaining pure copper.
  • a power source is used for driving a redox reaction in a, for the electrodes, joint electrolytic solution, a solution that can conduct current.
  • the electrolytic solution for example includes cupric sulfate, copper mixed with sulfuric acid. Electrons are added through the cathode, the negative pole.
  • the cathode for example includes stainless steel, pure copper or titanium or a similar agent that is not affected by the current.
  • positive ions wander that are reduced by meeting electrons from the surface of the cathode, whereby pure copper sticks to the cathode.
  • the anode which includes impure copper and is the positive pole, oxidation occurs as the negative ions drop off electrons there.
  • the invention further relates to a device for use in electrolysis of copper to prevent the copper solution that sticks to the cathode plate from growing around the edges of the plate.
  • An edge protection is arranged at the free sides of the cathode plate to prevent growth of a copper layer around the edge portions and facilitate release of copper from the cathode plate.
  • a prior art device includes an edge list with a groove between two lips, the one side of which is adapted to the thickness of the cathode plate. The other side of the list is provided with a groove for an expanding or splitting list. After the edge list has been placed on the edge of the cathode plate, the expanding list is pressed fixedly onto the list. The splitting list presses the lips of the edge list against the sides of the cathode plate, whereby the edge list is kept in place.
  • Fig. 1 schematically shows a cathode plate immersed in an electrolyte bath
  • Figs 2-9 show different variants of edge lists DESCRIPTION OF EMBODIMENTS
  • the cathode plate 1 shown in the figures comprises an outspread plate formation.
  • Fig. 1 schematically shows a cathode plate 1 immersed in an electrolyte bath 2 for production of copper in a known way.
  • the cathode plate 1 can be made of for example titanium, stainless steel or copper.
  • a suspension device 4 is arranged onto one edge 3 of the cathode plate, in which the cathode plate can be suspended to assume an upright position.
  • the cathode plate's other edges 5, 6, the side edges viewed from an upright position, are provided with edge protection or edge lists 7.
  • the bottom edge 8 can also be arranged with an edge list, but this edge can also be provided with a parting agent, for example wax or a similar agent.
  • the edge protections 7 are configured so that they comprise and encase the cathode plate's edge surfaces 9 and extend at least around the side edges 10 of the cathode plate, which in an active state are placed in the electrolyte bath to prevent copper from sticking and building up around and over the edge 9 of the cathode plate 1.
  • the edge protection 7 comprises two portions, a first 11 respectively a second 12 portion.
  • the first portion/portions 11 comprise a first formation 11.1 and the second portion/portions 12 comprise a second formation 11.2, where the formations, when the edge protection 7 is in an active operating state, are in locked engagement with each other.
  • the first formation and the second formation are elongated and travel along the first portion/portions 11 respectively the second portion/portions 12.
  • the first formation comprises grooves 13 and the second formation comprises projections or wedge formations 14, or vice versa, which after mounting and in interaction with each other in use of the edge protection 7 are in a locking blocked engagement/interaction with each other.
  • the groove 13 and the projection 14 each includes a first surface 15 respectively a second surface 16, where the first surface and the second surface abut against each other when the edge protection is in an operating state and prevents the second portion from moving from the first portion and by means of the clamping force that is obtained/arises between the first portion and the cathode plate in a tightening way prevents copper solution that sticks to the cathode plate from growing around the edges of the cathode plate.
  • the edge protection includes said first elongated portion 11 mounted on the cathode plate 1 as well as a second elongated portion 12 that covers the cathode edge 5,6 at a surface area on each side 5,6 of the cathode plate 1.
  • the first portion 11 includes an elongated list 11 , which with its one longitudinal edge 17 is affixed in the cathode plate 1 , in connection with the cathode plate edge 5,6.
  • the first portion 11 is made of a material allowing it to be fixed to the cathode plate by means of welding with or without weld material, welding with spots or continuous welding or soldering, which is indicated by reference numeral 18 in the figures.
  • the weld can advantageously be applied in the position on the first portion that gives the strongest clamping force, when the first portion is affixed to the cathode plate.
  • the weld can also be applied in several positions along the first portion's edge 17, abutting against the cathode plate.
  • a first portion 11 is mounted on both sides 19 and 20, respectively, of the cathode plate 1 , which is a mirroring from the opposite side.
  • the elongated list 11 is bent viewed in its longitudinal direction so that its other edge 17b is at a distance from the cathode plate.
  • the elongated first portion 11 is
  • the advantage of laser welding is that the risk that the cathode plate is deformed or buckle due to heat generation is very low because the heat generation is concentrated to the welded area.
  • the one edge of the first portion 11 is
  • the elongated first portion's 11 second edge 17b forms a stop boss 21 or engagement edge interacting with the edge protection's second elongated portion 12 for receiving and retaining the second portion.
  • the edge protection's second portion 12 comprises a material, which advantageously is not electrically conductive, for example various plastic materials, rubber or composite or a combination of these.
  • the material must be dimensionally stable, but allow for a certain springiness, elasticity, to facilitate mounting and to facilitate loosening of the copper layer.
  • the cathode plate 1 is deformed, and therefore the second portion 12 of the edge protection must follow the deformation of the cathode plate.
  • the first elongated portion includes a stop boss in the form of a hook formation 21 or projection formed in its free edge.
  • the hook formation has a projecting portion, a bulge 22 or a barb 23, which is intended to enter into blocking engagement with the edge protection's second portion 12.
  • the second portion 12 of the edge protection is configured with a groove 24 between two wedge formations 14, which protrude from a main portion 25.
  • the wedge formations 14 have been given a shape corresponding to the space that is formed between the hook formation 22,23 and the side 19,20 of the cathode plate.
  • the wedge formation 14 is forced into the space to its active state by the hook formation 22,23 or the projection being able to spring outwards, away from the side 19,20 of the cathode plate.
  • the wedge 14 has passed the hook formation 22,23 and this has sprung backwards, the wedge , 14 is retained by means of the hook formation 22,23, which enters into blocking engagement with said wedge 14, whereby the second portion 12 is prevented from coming loose from the edge 9 of the cathode plate 1.
  • the elongated first portion 1 1 is welded to the edge surface 9 of the cathode plate, substantially perpendicularly arranged relative to the cathode plate surfaces 19,20.
  • the first elongated portion 1 1 can comprise two identical portions 1 1 a, 11 b, which are welded to the cathode plate's edge 9 laterally reversed relative to each other.
  • Said first portion 1 1 can comprise partial sections 1 1z that are attached to the cathode plate, which partial sections form an elongated first portion.
  • the first portion's second edge can be arranged with a plastic covering or rubber that is vulcanized fixedly after fastening by welding. This further breaks the conductive contact travel between both side faces of the cathode plate so that copper is prevented from sticking.
  • the clamping force of the first portion 1 1 can be of such magnitude that a tool, hydraulic, pneumatic or mechanically effective in any other way, must be used for mounting the edge protection. Said tool helps prevent plastic or rubber covering from being damaged during mounting of the other portion.
  • the edge protection's second elongated portion according to the variant shown in Figs 5-7 has been given a form so that it encompasses the edge 9 of the cathode plate, the edge portion, and at its free edges is provided with grooves 27 and hooks 28 that protrude from a main portion 29, interacting with the hook formation 22,23 of the first portion 1 1.
  • the main portion 29 is configured so that, in its active state and mounted on the cathode plate, a space A is formed between the cathode plate edge 9 and the main portion 29.
  • the space has a size that makes it possible to press the second portion 12 over the cathode plate edge 9, and with the free edges 30 of the second portion further over the hook formations 22,23 of the first portion 11.
  • the free edges 30 of the second portion 12 are pressed in under the hook formation 22,23 of the first portion 11 in such a manner that the hook formation is placed in the second portion's grooves 27 and enters into blocking engagement with the groove 27. Thereafter, the main portion 29 springs out from the edge 9 of the cathode plate. In this way, the second elongated portion is prevented from coming loose from the cathode plate edge.
  • the first elongated portion 11 forms grooves 13, into which the second elongated portion 12 can be inserted.
  • the second portion has a main portion 25, from which a pair of wedge formations 14 protrude.
  • the wedge formations 14 and the grooves 13 substantially have the same shape.
  • the second portion is mounted by the wedge formations being fitted against the grooves 13 at the first elongated portion's end, which is located in connection with the bottom edge 8 of the cathode plate and is inserted or drawn in along the entire length of the cathode plate until the entire second portion is accommodated by the first portion.

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 une protection de bord (7) destinée à être utilisée en électrolyse pour la purification de cuivre, une anode et une cathode étant immergées dans une solution électrolytique (2) et un courant étant fourni à la cathode (1), qui est un pôle négatif, et l'anode est un pôle positif, de sorte que le cuivre impur, après collecte d'électrons, devienne du cuivre pur et adhère à la cathode (1), qui est une formation de plaque étendue, la protection de bord (7), lors de l'utilisation, étant placée sur et autour d'un bord (9) au niveau d'au moins un côté libre (5, 6) de la plaque de cathode (1). La protection de bord (7) comprend au moins une première partie allongée (11) montée sur la cathode (1) pour recevoir et retenir au moins une deuxième partie allongée (12), qui recouvre le bord de la cathode au niveau d'une zone de surface (10) de chaque côté (5, 6) de la plaque de cathode (1), de chaque côté (19, 20) du bord de la plaque de cathode (1), et une surface de bord (9), agencée de façon sensiblement perpendiculaire aux surfaces de plaque de cathode (10).
PCT/SE2019/050629 2018-06-29 2019-06-27 Dispositif de plaque de cathode WO2020005147A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19826115.8A EP3814550A4 (fr) 2018-06-29 2019-06-27 Dispositif de plaque de cathode

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1850822A SE542768C2 (sv) 2018-06-29 2018-06-29 Anordning vid katodplåt
SE1850822-6 2018-06-29

Publications (1)

Publication Number Publication Date
WO2020005147A1 true WO2020005147A1 (fr) 2020-01-02

Family

ID=68987293

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2019/050629 WO2020005147A1 (fr) 2018-06-29 2019-06-27 Dispositif de plaque de cathode

Country Status (3)

Country Link
EP (1) EP3814550A4 (fr)
SE (1) SE542768C2 (fr)
WO (1) WO2020005147A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4288312A (en) * 1979-08-13 1981-09-08 Cominco Ltd. Cathode and edge stick assembly
EP0082221A1 (fr) 1981-12-23 1983-06-29 Peter Berger Protection d'arête d'électrode, électrode ainsi protégée
US20020031709A1 (en) * 2000-06-05 2002-03-14 Ebert William A. Locking edge protector
WO2003074767A1 (fr) 2002-03-07 2003-09-12 Trevor James Leathwick Baguette de protection et broche de serrage pour electrode
US20060289301A1 (en) * 2005-06-23 2006-12-28 Ebert William A Edge protector assembly
CN106435649A (zh) * 2016-11-07 2017-02-22 杨丹虹 电解精炼永久阴极板竖边用暗扣式装配并可修复的包边条
CN106562467A (zh) 2016-11-02 2017-04-19 浙江泽源植物科技有限公司 一种烟草/非烟草薄片复合涂布处理方法
CN206562467U (zh) 2017-03-15 2017-10-17 山东清铝金属有限公司 一种设有包边体的电极板

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4288312A (en) * 1979-08-13 1981-09-08 Cominco Ltd. Cathode and edge stick assembly
EP0082221A1 (fr) 1981-12-23 1983-06-29 Peter Berger Protection d'arête d'électrode, électrode ainsi protégée
US20020031709A1 (en) * 2000-06-05 2002-03-14 Ebert William A. Locking edge protector
WO2003074767A1 (fr) 2002-03-07 2003-09-12 Trevor James Leathwick Baguette de protection et broche de serrage pour electrode
US20060289301A1 (en) * 2005-06-23 2006-12-28 Ebert William A Edge protector assembly
CN106562467A (zh) 2016-11-02 2017-04-19 浙江泽源植物科技有限公司 一种烟草/非烟草薄片复合涂布处理方法
CN106435649A (zh) * 2016-11-07 2017-02-22 杨丹虹 电解精炼永久阴极板竖边用暗扣式装配并可修复的包边条
CN206562467U (zh) 2017-03-15 2017-10-17 山东清铝金属有限公司 一种设有包边体的电极板

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3814550A4

Also Published As

Publication number Publication date
EP3814550A4 (fr) 2022-03-30
SE1850822A1 (sv) 2019-12-30
SE542768C2 (sv) 2020-07-07
EP3814550A1 (fr) 2021-05-05

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