WO2015054801A1 - Anode réutilisable pour raffiner des métaux par électrolyse, procédé de réutilisation de l'anode recyclé - Google Patents

Anode réutilisable pour raffiner des métaux par électrolyse, procédé de réutilisation de l'anode recyclé Download PDF

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Publication number
WO2015054801A1
WO2015054801A1 PCT/CL2013/000077 CL2013000077W WO2015054801A1 WO 2015054801 A1 WO2015054801 A1 WO 2015054801A1 CL 2013000077 W CL2013000077 W CL 2013000077W WO 2015054801 A1 WO2015054801 A1 WO 2015054801A1
Authority
WO
WIPO (PCT)
Prior art keywords
anode
metal
main support
electrolysis
bars
Prior art date
Application number
PCT/CL2013/000077
Other languages
English (en)
Spanish (es)
Inventor
Sergio Eduardo CORTÉS BUSCH
Pedro Augusto BUSTAMANTE BUSTAMANTE
Original Assignee
New Tech Copper Spa.
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 New Tech Copper Spa. filed Critical New Tech Copper Spa.
Priority to PCT/CL2013/000077 priority Critical patent/WO2015054801A1/fr
Publication of WO2015054801A1 publication Critical patent/WO2015054801A1/fr

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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

Definitions

  • Chilean Patent No. 40193 of 09/13/1999 (Application 199600013) describes an anode for electrolytic recovery of metals composed of a horizontal bar joined by two parallel vertical surface metal grilles, separated from each other at a distance of between 20 to 80 mm This solution must be oriented to a different application to that of this application, since the anode is not constructed with the metal to dissolve and refine.
  • Chilean Patent Application No. 201300447 of 02/14/2013 describes an anode system consisting essentially of a stainless steel container and a plurality of copper bars grouped inside the container. Like all the solutions that incorporate a container, they reduce the production capacity of the Cell.
  • Figure 1/12 shows a front elevation view of the cross-linking of bars with straight horizontal main support, on which the anode is molded, by adding the metal to be retined in the molten state.
  • Figure 2/12 shows a perspective view, of the front elevation, of the cross-linking of bars with straight horizontal main support, on which the anode is molded by adding the metal to be retined in the molten state.
  • Figure 3/12 shows a perspective view of the front elevation, of the cross-linked bars with folded main support, on which the anode is molded by adding the metal to be retined in the molten state.
  • Figure 4/12 shows a perspective view of the front elevation, of the cross-linking of high conductivity metal bars, with straight horizontal main support and three perpendicular high conductivity metal bars attached to the main support.
  • Figure 5/12 shows a perspective view of the front elevation, of the high conductivity metal bar of the folded main support and three perpendicular high conductivity metal bars attached to the main support.
  • Figure 6/12 shows a perspective view of a molded anode on a crosslink with straight main support bar.
  • Figure 7/12 shows a perspective view of a molded anode on a lattice with folded main support bar.
  • Figure 8/12 shows a partial perspective view of a molded anode on a reticulate with folded main support bar, inserted into a removable insulating support structure to position anodes and cathodes.
  • Figure 9/12 shows a front elevation view of a traditional anode, inserted in the lateral guides of a removable insulating support structure to position anodes and cathodes, already installed inside the electrolytic cell.
  • Figure 10/12 shows a front elevation view of an anode with straight main support, inserted in the lateral guides of a removable insulating support structure to position anodes and cathodes, already installed inside the electrolytic cell.
  • Figure 11/12 shows a front elevation view of an anode with folded main support, inserted in the lateral guides of a removable insulating support structure to position anodes and cathodes, already installed inside the electrolytic cell.
  • Figure 12/12 shows a perspective view of an anode with straight main support, to be installed in a removable insulating support structure to position anodes and cathodes.
  • Ends of the lower horizontal bar of the reticulate which serves to enter the anode guide of the electrolytic cell, or the removable insulating support structure to position anodes and cathodes.
  • Anode guide of the removable insulating support structure to position anodes and cathodes.
  • the present invention consists of a reusable anode (15), for the refining by electrolysis of metals, comprising a main support bar of high conductivity metal (1), joined in solidarity with a plurality of vertical bars of high conductivity metal (4), (5), (6), which are held in relative position between them, by joining a plurality of horizontal bars (7), (8), (9), of smaller diameter and greater mechanical strength and corrosion, than vertical bars.
  • the main support bar of high conductivity metal typically copper
  • the high conductivity metal bars (4), (5), (6) can also be partially coated, with the same type of material mentioned above, exposing a plurality of openings (10) in each of them.
  • the crosslinking is completed, it is placed centered on a mold, which is filled with the molten metal to be retined. It should be noted that the main support bar (1) is outside the mold.
  • Another embodiment of this invention consists in folding both ends of the main support bar (12), so that it does not interfere with the hooks of the harvesting devices and so that the end (14) of the folded bar (12 ) make contact with the electric supply bar (20) of the electrolytic cell, and that the other end of the bar is resting on the insulating area of the electric supply bar.
  • Another embodiment of this invention consists in arranging the lower horizontal bar (9) of the bar crosslink, of a length greater than the width of the anode, so that the ends (11) protrude outside the anode (15), to that are introduced into the grooves of the anode guides (17) of the electrolytic cell, when a removable insulating support structure for positioning anodes and cathodes, such as the one shown in Figure 12/12, has been placed inside it .
  • anode is obtained that solves the problem of fracturing the supports of the current anodes, manufactured entirely by melting the metal to be refined on a mold, since it cools when it cracks in the area of the ears, which normally causes these cracks to grow until the ears are broken, the entire anode falling into the cell.
  • the structure of the bar crosslinking shown in Figure 2/12 is constructed, using a material of high mechanical and corrosion resistance, preferably titanium for the bars (7), (8) and (11), which jointly and severally join the bars (4), (5), (6) and (1) or (12) as the case may be, of high electrical conductivity material, typically copper, the latter two coated with a corrosion resistant material, typically titanium , (3) or (13) as appropriate, except in the electrical contact zone (2) or (14).
  • a material of high mechanical and corrosion resistance preferably titanium for the bars (7), (8) and (11), which jointly and severally join the bars (4), (5), (6) and (1) or (12) as the case may be, of high electrical conductivity material, typically copper, the latter two coated with a corrosion resistant material, typically titanium , (3) or (13) as appropriate, except in the electrical contact zone (2) or (14).
  • thin anodes were made for this application test of the invention. Thin anodes were used because they wanted to simulate the final stage of the electrolysis cycle, which is when some deficiency is revealed in the anodes or in the process conditions, which can be corrected.
  • the thin anodes were of the same weight, 20 kg, both for the new anodes of the present invention, and for the traditional anodes.
  • the residual 15% obtained from traditional anodes is the lower limit, of the percentage generally shown in industrial operations ranging from 15 to 25%, but the difference in value in favor of the laboratory operation is due to the fact that in the laboratory there is a more thorough control of the operation since only the final part of the cycle was worked on.
  • This characteristic of the new anodes of this invention is an operational advantage in terms of the number of operators needed to carry out the refining, together with the corresponding time savings.

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

Les anodes utilisées actuellement pour raffiner les métaux non ferreux par électrolyse, sont fondus sur un moule avec des prolongements au niveau de leur zone supérieure, utilisés pour supporter l'anode dans la cellule électrochimique. Ces prolongements se situent sur le niveau de l'électrolyte, puisqu'il ne participent pas au processus de raffinage, puisqu'ils se refondent avec le reste de l'anode résiduelle, au terme du cycle de production. Cela implique le recyclage de 15 à 25% des anodes utilisées. La portion de métal à raffiner de l'anode de cette invention se situe sous le niveau de l'électrolyte, et se rapporte à la cellule, au moyen d'une barre de métal partiellement recouverte, reliée à des barres qui se prolongent à l'intérieur de la portion de métal à raffiner, métal qui s'attache aux barres, lequel est à l'état fondu, pour former l'anode. Le cycle de production terminé, le support est retiré avec les restes de métal, placé dans un moule et se vide directement sur celui-ci le nouveau métal fondu seulement jusqu'à compléter une nouvelle anode. Grâce à cette invention on éviter de fondre l'anode résiduelle et on diminue l'inventaire de métal recyclé.
PCT/CL2013/000077 2013-10-18 2013-10-18 Anode réutilisable pour raffiner des métaux par électrolyse, procédé de réutilisation de l'anode recyclé WO2015054801A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CL2013/000077 WO2015054801A1 (fr) 2013-10-18 2013-10-18 Anode réutilisable pour raffiner des métaux par électrolyse, procédé de réutilisation de l'anode recyclé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CL2013/000077 WO2015054801A1 (fr) 2013-10-18 2013-10-18 Anode réutilisable pour raffiner des métaux par électrolyse, procédé de réutilisation de l'anode recyclé

Publications (1)

Publication Number Publication Date
WO2015054801A1 true WO2015054801A1 (fr) 2015-04-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CL2013/000077 WO2015054801A1 (fr) 2013-10-18 2013-10-18 Anode réutilisable pour raffiner des métaux par électrolyse, procédé de réutilisation de l'anode recyclé

Country Status (1)

Country Link
WO (1) WO2015054801A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1434334A (en) * 1973-01-29 1976-05-05 Electronor Corp Electrolytic cell and process
WO1999057338A1 (fr) * 1998-05-06 1999-11-11 Eltech Systems Corporation Structure d'electrode en plomb a surface maillee
US6129822A (en) * 1996-09-09 2000-10-10 Ferdman; Alla Insoluble titanium-lead anode for sulfate electrolytes
EP1070770A2 (fr) * 1999-07-21 2001-01-24 Luis Alberto Aghemio Rodriguez Recyclage d'anodes usées dans le raffinage électrolytique de métaux
US20120205239A1 (en) * 2011-02-16 2012-08-16 Freeport-Mcmoran Corporation Anode assembly, system including the assembly, and method of using same
WO2013038352A1 (fr) * 2011-09-16 2013-03-21 Labra Vargas Aldo Ivan Système composé d'un moyen de suspension d'anode et d'une anode à géométrie améliorée
WO2014068410A1 (fr) * 2012-10-29 2014-05-08 Zimco Group (Pty) Ltd Anode pour utilisation dans la récupération de métaux par électrolyse

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1434334A (en) * 1973-01-29 1976-05-05 Electronor Corp Electrolytic cell and process
US6129822A (en) * 1996-09-09 2000-10-10 Ferdman; Alla Insoluble titanium-lead anode for sulfate electrolytes
WO1999057338A1 (fr) * 1998-05-06 1999-11-11 Eltech Systems Corporation Structure d'electrode en plomb a surface maillee
EP1070770A2 (fr) * 1999-07-21 2001-01-24 Luis Alberto Aghemio Rodriguez Recyclage d'anodes usées dans le raffinage électrolytique de métaux
US20120205239A1 (en) * 2011-02-16 2012-08-16 Freeport-Mcmoran Corporation Anode assembly, system including the assembly, and method of using same
WO2013038352A1 (fr) * 2011-09-16 2013-03-21 Labra Vargas Aldo Ivan Système composé d'un moyen de suspension d'anode et d'une anode à géométrie améliorée
WO2014068410A1 (fr) * 2012-10-29 2014-05-08 Zimco Group (Pty) Ltd Anode pour utilisation dans la récupération de métaux par électrolyse

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