WO2013038352A1 - Système composé d'un moyen de suspension d'anode et d'une anode à géométrie améliorée - Google Patents

Système composé d'un moyen de suspension d'anode et d'une anode à géométrie améliorée Download PDF

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Publication number
WO2013038352A1
WO2013038352A1 PCT/IB2012/054750 IB2012054750W WO2013038352A1 WO 2013038352 A1 WO2013038352 A1 WO 2013038352A1 IB 2012054750 W IB2012054750 W IB 2012054750W WO 2013038352 A1 WO2013038352 A1 WO 2013038352A1
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WIPO (PCT)
Prior art keywords
anode
reusable
ears
central bar
enhanced geometry
Prior art date
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Ceased
Application number
PCT/IB2012/054750
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English (en)
Inventor
Aldo Iván LABRA VARGAS
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Priority to DE112012003846.0T priority Critical patent/DE112012003846T5/de
Priority to KR1020147009570A priority patent/KR20140090153A/ko
Priority to US14/345,319 priority patent/US20140262761A1/en
Priority to MX2014003239A priority patent/MX2014003239A/es
Priority to CN201280051454.0A priority patent/CN104040031A/zh
Publication of WO2013038352A1 publication Critical patent/WO2013038352A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the present invention relates to a system comprising reusable ears for copper anodes used in the electrorefining process, which replaces the need of having these same anodes formed by its own ears.
  • These ears currently only serve for the electrical contact function and work as a current anode supporter, and, therefore, when finishing the electro- winning process on the cathodes, this material is left intact and must be re-smelted again to form a new anode.
  • This invention makes possible to use an anode without ears which allows to minimize the scrap production together with its consequent associated costs.
  • the high-purity copper production process involves several stages starting with the reception and sampling of copper concentrates. It is important to perform a sampling of them as well as classify them according to the copper, iron, sulfur, silica concentrations and impurities such as mainly arsenic, antimony and zinc.
  • the concentrate enters into the drying stage where the humidity is reduced from 8% to 0.2%, then the dried concentrated enters into the fusion process, whose objective is to achieve a change of state which allows the concentrate to pass from a solid state to a liquid state so as the copper can be separated from the other elements comprising the concentrate.
  • the copper concentrate fusion is a product of the instantaneous auto-ignition thereof, which takes place at high temperatures (greater to 1200 °C).
  • the concentrate passes from the solid state to a liquid state, the elements comprising the ores present in the concentrate are separated according to their weight, remaining the lighter ones on the upper part of what has been smelted (molten metal), which is called slag, mainly high iron and silica phases, while the copper associated to sulfur which is heavier, is concentrated on the lower part of the reactor, which is called Babbitt metal or bearing metal.
  • molten metal molten metal
  • slag mainly high iron and silica phases
  • the copper associated to sulfur which is heavier is concentrated on the lower part of the reactor, which is called Babbitt metal or bearing metal.
  • the high-copper material is carried in liquid form through pots or channels to the conversion process where a high copper phase called blister copper is produced (98.5 Cu).
  • This product is subsequently carried in liquid form through pots or channels to a refining process where are mainly removed impurities such as dissolved sulfur, dissolved oxygen and impurities such as arsenic, antimony, bismuth, lead among others, such that finally results the obtaining of the product called anode copper with an average purity of 99.5 % of copper.
  • the anode copper is molded and solidified with a rectangular geometry of an anode plate (1) having ears (2) as showed in figure 1.
  • the most used way to cast the anode copper is by means of a casting wheel which comprises a determined quantity of copper molds wherein the copper is poured at a temperature lower or equal to 1200°C, once the copper is poured into the casting wheel, the latter starts to spin and the smelted copper begins to cool in a first stage at ambient temperature until the upper part of the copper is solid, subsequently the copper passes by a cooling stage which comprises upper water cooling and lower water cooling. During this stage the copper decreases its temperature until reaching a complete solid state to be carried to the electrolytic refining plant in order to produce a high-purity cathode having copper contents higher or equal to 99.9 % Cu.
  • the anode copper is formed on a mold (7) which comprises a central rectangular-shaped cavity (8) to receive the liquid copper which forms the anode plate (1).
  • a mold (7) which comprises a central rectangular-shaped cavity (8) to receive the liquid copper which forms the anode plate (1).
  • the anode (1) is introduced into an electrolytic cell (3), which has a cathode (4) that can be permanent or of mother sheet according to the technology to be used having its respective hanging bar (5).
  • the electrolytic cell (3) is filled with an acid solution and current is applied to the contacts (6) in order to produce the electrowinning of the copper from the anode (1) towards the cathode (4) according to what is shown in figures 2 to 5.
  • the anode (1) only remains submerged up to the continuous zone of the ears (2) and due to this the upper part of the anode (1) does not participate in the electrolysis process as shown in greater detail in figure 3, thus using the ears (2) only to transport the same and for electrical contact.
  • this part of the anode remains intact and becomes an important part of the rest of the anode, together with the material that was not dissolved, called scrap.
  • This material must be smelted again to form a new anode (1) and continuing with the complete cycle; this product is formed in all the existing refineries and the reprocessing cost is high wherein said product is made by means of different technologies existing in the market.
  • the present invention proposes a new geometrical shape of the anode (1) which leads to separate the ears (2) of the anode body, by keeping a rectangular configuration or other shape of dimensions required by the electrorefining technology to be used, subsequently and downstream of the molding process must be incorporated the fastening system, which has already been dimensioned and standardized from the factory, according to the geometrical dimensions used by the existing technologies of electrorefining.
  • the fastening system can be comprised by materials resistant to the acid solution used in the electro-erosion and having conductive elements that will allow to transmit the electric current to the modified anode such that the electrical contact can be the suitable one for the electrolysis process.
  • This material with good electrical conduction properties such as copper
  • this document discloses a method for the manufacture of a suspension bar in which a sheath of copper is drawn over a core of steel, starting from copper tube. Copper and steel cores are introduced into the copper tube, subsequently the sheath is drawn with further cores being added, to a total length which essentially corresponds to the change in length of the copper tube occurring as a result of the drawing and, finally, the rod produced is sawn up into the desired rod lengths at the points where the copper cores are located.
  • the bar Towards the center, the bar has two hooks to suspend an anode or cathode as the case may be.
  • Document ES 8303548 discloses a method of manufacture of a lead anode for the electrolytic extraction of metals.
  • the lead anode is used in the electrolytic extraction of metals and comprises a sheet of lead anode material provided with one or more recesses on the surface of a lead-tin alloy coated copper bus bar in the slot of which is placed a sheet of lead anode material of one solder that joins the mentioned sheet to the bus bar and of deposits of lead alloy which join the existing joints between the mentioned sheet and the cited bus bar.
  • the solder comprises a lead-tin-silver alloy to be applied in the electrowinning of copper, nickel and zinc.
  • the present invention relates to a reusable ear system for copper anodes allowing to hang these electrodes in order to carry them between the smelting process and the electrorefining which avoids smelting their own ears on these same anodes, thus generating a change of geometry that allow to enhance the process and thereby reducing the scrap.
  • the system of the proposed invention starts with the modification of the mold of the previous art, which currently manufactures a standard anode (1) having ears (2) of the same molded material.
  • This geometry of the mold must be modified by a mold geometry producing an anode without ears.
  • the system of the present invention further incorporates a set of external ears to the original piece which have been manufactured according to a pre-established and standardized design according to the electrorefining or electrowinning technology to be used, containing conductive elements which allow to transmit the electric current to the modified anode such that the electrical contact is the suitable one for the electrorefining process and must be able to incorporate an electronic system by means of which through a software relevant information of the electrowinning process is received.
  • This modification of the anode can lead to a modification in the way of removing the anode from the wheel by means of robotized, automated or semi-automated system with a gripper systems or any other, to remove the anode from the wheel and place it on the water cooling pit.
  • the integrated anodes will be placed in the water cooling pit or in a subsequent stage before entering into the electrolytic cells. These integrated anodes must have a fitting system which guarantees the handling of the anode copper thereby allowing an excellent electrical contact within the cell and can be reusable, thus allowing the effective release of the rest of the anode which was not able to dissolve in the electrolysis stage.
  • the system of the invention comprises an anode with a special geometrical shape and a set of reusable pieces which are independently generated and incorporated as a system in subsequent stages into the molding process of the anode copper.
  • the essence of the invention lays in the system of assembly which allows the operation handling of the anode copper allowing an efficient current conduction and incorporating technological elements which generate relevant information of the process.
  • the system of this invention is reusable in the process.
  • a second object of this invention is providing a monitoring system which allows to measure the material flow within the discharge channel and in the evacuation zone.
  • Figure 1 shows a perspective view of an anode according to the previous art.
  • Figure 2 shows a perspective view, from the previous art, of an electrolytic cell with the anode and cathode inserted therein.
  • Figure 3 shows a perspective view, according to the previous art, of an electrolytic cell with the anode and cathode risen above the acid solution (electrolyte).
  • Figure 4 and 5 shows a perspective view, according to the previous art, of an electrolytic cell with the anodes and cathodes submerged in the acid solution (electrolyte).
  • Figure 6 shows a frontal elevation of a casting mold to form an anode according to the previous art.
  • Figure 7 shows a perspective view of a casting mold to form an anode according to the previous art.
  • Figure 8 shows a perspective view of a first embodiment of ears for fastening the anodes of the present invention.
  • Figure 9 shows a perspective view of a first embodiment of ears installed in an anode of the present invention.
  • Figure 10 shows a front perspective view of a first embodiment of the set of ears and anode of the present invention.
  • Figure 11 shows an end perspective view of a first embodiment of the set of ears and anode of the present invention.
  • Figure 12 shows a perspective view of a cell for the electrorefining of copper with the set of ears and anode of the present invention.
  • Figure 13 shows a perspective view of a casting mold to form an anode according to the present invention.
  • Figure 14 shows a front elevation view of a casting mold to form an anode according to the present invention.
  • Figure 15 shows a perspective view of an anode according to the present invention.
  • Figure 16 shows a front elevation view of an anode according to the present invention.
  • Figure 17 shows a perspective view of a second embodiment of the set of ears and anode of the present invention.
  • Figure 18 shows a front elevation view of a second embodiment of the set of ears and anode of the present invention.
  • Figure 19 shows a front elevation view of a second embodiment of the set of ears and anode of the present invention wherein the ears are illustrated as stripped out from the anode.
  • Figure 20 shows a front elevation view of a second embodiment of the set of ears and anode of the present invention wherein the ears are illustrated being mounted to the anode.
  • Figure 21 shows a front elevation view of a second embodiment of the set of ears and anode of the present invention wherein the ears are illustrated as mounted on the anode.
  • Figure 22 shows a cross section view of a second embodiment of the set of ears and anode of the present invention wherein the ears are illustrated as mounted on the anode.
  • Figure 23 shows a cross section view of a second embodiment of the set of ears and anode according to the present invention wherein the cavities for inserting sensors and circuits for the monitoring of variables generated from the process are illustrated.
  • the present invention consists of a set of elements of pieces which are assembled between each other forming an anode (1), the rectangular-shaped anode body is molded by a molding system by means of liquid metal coming from a furnace or reactor, the ears or ear system are manufactured in an unrelated place according to the pre- established design and material such that they establish a perfect electrical contact in the electrolytic cell, the ears or fastening system It has a design such that they can contain inside themselves an electronic system which allows to transmit electrical signals and of the electrolytic process.
  • These elements are assembled to the anode body in a place past the molding system, once the rectangular anode body is at a suitable temperature for the assembly.
  • the anode system can be installed in any system for molding copper or other metal.
  • the system is comprised by a rectangular-shaped body anode formed of a material preferably copper or other metal wherein said body is molded and solidified in a casting wheel system or other mechanism, this molded body and of dimensions according to specific requirements is carried by a robotized, automated machine or other carrying mechanism and cooled for its subsequent assembly.
  • the anode with a modified geometry is further comprised by a fastening and handling means which can be joined between each other or separately. This fastening means serves for handling the anode and to make contact between the rectangular body and the electrolytic cell.
  • the fastening means is manufactured of a material equal or different to the rectangular body, which can vary according to the design of the electrolytic cell technology to be used, these are strong enough such that they can support the weight of the rectangular body without being deformed and allowing a perfect verticality of the anode with a modified geometry in the electrolytic cell.
  • this fastening means must be manufactured of a material inert to the solution in the electrolytic cell such that these are not dissolved in the electrolyte and can cause a detachment and fall of the rectangular body or of the fastening means itself within the interior of the cell.
  • the fastening means can have in its manufacturing design a section inside which is possible to incorporate an electronic element, by means of which it is possible to access to the relevant information of the process such as: weight loss of the anode system, short circuits and variables of the typical electrical type of the electrorefining or electrowinning process and variables of productive nature which make possible to observe the process as a whole.
  • This information will be captured by means of a computing system especially developed for this process.
  • the system of the present invention is comprised by an anode hanger means (10) and a anode of enhanced geometry (22).
  • the hanger means (10) comprises a reusable central bar
  • the enhanced geometry anode (22) is formed in the mold (7) as shown in figures 13 and 14.
  • the central rectangular- shaped cavity (8) receives the liquid copper forming the enhanced geometry anode plate (22).
  • On the upper part of said mold (7) and towards the corners of the central cavity (8) are located two small recesses (14) to receive the liquid copper forming two small upper projections (15) which replace the ears (2) of the previous art.
  • the hanger means (10) comprises a reusable independent central bar (16). On the ends of this reusable independent central bar (16), are fitted two reusable independent ears (17) which have fastening means (18) formed by a lower notch (23) on which is housed the small upper projection (15) of the enhanced geometry anode (22).
  • the reusable independent ears (17) have on the opposite side to the fastening means (18), an overhanging short bar (19) with a male rim (21).
  • This male rim (21) is fitted with a female slot (20) located on the reusable independent central bar (16). This allows to generate a fastening mechanism between said reusable independent central bar
  • FIG. 19 to 22 is shown the assembly of this second embodiment of the present invention.
  • the reusable independent central bar (16) is located on the upper edge of the enhanced geometry anode (22).
  • two reusable independent ears (17) are displaced from the ends with the overhanging short bars (19) co-linear to the reusable independent central bar (16) until the male rim (21) of the reusable independent ears (17) are fitted with the female slot (20) of the reusable independent central bar (16).
  • the lower notches (23) of the fastening means (18) are also fitted with the small upper projections (15) of the enhanced geometry anode (22), thus generating the closure of the system and securing the anode to the hanger means (10).
  • the female slot (20) and the male rim (21) form a tongue and groove joint member that makes possible the joint between the reusable independent central bar (16) and the reusable independent ears
  • the hanger means (10) of the present invention also has cavities for the mounting of sensors and electrical circuits which allow to measure and control different parameters of the process.
  • the sensors and circuits comprise communication means which emits signals that are received by a computing unit receiving means, which through a software processes the received data and transform them into relevant information of the process such as: weight loss of the anode system, short circuits and variables of the typical electrical type of the electrorefining or electrowinning process and variables of productive nature which make possible to observe the process as a whole. This information will be captured by means of a computing system especially developed for this process.
  • the hanger means (10) has in at least one of its reusable independent ears (17) first cavities (24) for installing sensors, circuits and communication means.
  • first cavities (24) for installing sensors, circuits and communication means.
  • second cavity (25) for the installation of sensors, electronic circuits and communication means.
  • the communication means deliver the obtained data from the sensors and electronic circuits to a computer which processes said data and delivers relevant information for the monitoring and control of the process.

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  • 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)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

La présente invention concerne un système composé d'un moyen de suspension d'anode (10) et d'une anode à géométrie améliorée (22) permettant de réutiliser ledit moyen de suspension d'anode (10) afin de réduire au minimum la production de fragments et de permettre une amélioration du procédé entre l'extraction par fusion et l'électroraffinage, ledit moyen de suspension (10) étant formé par une barre centrale réutilisable (11) devant être positionnée sur le bord supérieur de l'anode à géométrie améliorée (22), ladite barre centrale réutilisable (11) comprenant sur ses extrémités des pattes réutilisables (12) comprenant un moyen d'entrée en prise (13) qui saisit l'anode à géométrie améliorée (22) sur ses coins supérieurs, deux petites saillies supérieures (15) émergeant dans les coins supérieurs de ladite anode à géométrie améliorée (22). Les petites saillies supérieures (15) sont dotées dudit moyen d'entrée en prise (13) pour fixer le moyen de suspension (10) sur l'anode à géométrie améliorée (22). En variante, le moyen de suspension (10) comprend une barre centrale indépendante réutilisable (16), deux pattes indépendantes réutilisables (17) étant montées sur les extrémités de ladite barre centrale indépendante réutilisable (16), qui comprennent un moyen de fixation (18) formé par une encoche inférieure (23) sur laquelle la petite saillie supérieure (15) de l'anode à géométrie améliorée (22) est logée.
PCT/IB2012/054750 2011-09-16 2012-09-12 Système composé d'un moyen de suspension d'anode et d'une anode à géométrie améliorée Ceased WO2013038352A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE112012003846.0T DE112012003846T5 (de) 2011-09-16 2012-09-12 System mit einer Anodenaufhängevorrichtung und eine Anode mit verbesserter Geometrie
KR1020147009570A KR20140090153A (ko) 2011-09-16 2012-09-12 애노드 거치수단과 보강된 기하학적 형태의 애노드로 구성된 시스템
US14/345,319 US20140262761A1 (en) 2011-09-16 2012-09-12 System consisting of an anode hanger means and an enhanced geometry anode
MX2014003239A MX2014003239A (es) 2011-09-16 2012-09-12 Un sistema que consiste de un medio colgador de anodos y un anodo de geometria mejorada.
CN201280051454.0A CN104040031A (zh) 2011-09-16 2012-09-12 由阳极吊钩装置和增强了几何结构的阳极组成的系统

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CL2307-2011 2011-09-16
CL2011002307A CL2011002307A1 (es) 2011-09-16 2011-09-16 Sistema compuesto por un medio colgador de ánodos y un ánodo, que posibilita reutilizar dicho medio colgador de ánodo minimizando la producción de scrap, porque dicho medio colgador está conformado por una barra central reutilizable para ser localizada en el borde superior del ánodo.

Publications (1)

Publication Number Publication Date
WO2013038352A1 true WO2013038352A1 (fr) 2013-03-21

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PCT/IB2012/054750 Ceased WO2013038352A1 (fr) 2011-09-16 2012-09-12 Système composé d'un moyen de suspension d'anode et d'une anode à géométrie améliorée

Country Status (9)

Country Link
US (1) US20140262761A1 (fr)
JP (1) JP2014530295A (fr)
KR (1) KR20140090153A (fr)
CN (1) CN104040031A (fr)
CL (1) CL2011002307A1 (fr)
DE (1) DE112012003846T5 (fr)
MX (1) MX2014003239A (fr)
PE (1) PE20141387A1 (fr)
WO (1) WO2013038352A1 (fr)

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WO2014195572A1 (fr) * 2013-06-05 2014-12-11 Outotec (Finland) Oy Appareil pour la protection d'anodes et de cathodes dans un système de cellules d'électrolyse
WO2015054801A1 (fr) * 2013-10-18 2015-04-23 New Tech Copper Spa. Anode réutilisable pour raffiner des métaux par électrolyse, procédé de réutilisation de l'anode recyclé
WO2016005858A1 (fr) 2014-07-08 2016-01-14 Asesorias Y Servicios Innovaxxion Spa Barre de suspension pour anodes sans ergots
CN109402669A (zh) * 2018-12-19 2019-03-01 永兴县鸿福金属有限公司 一种电解铅制备用极片悬挂装置

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FI127029B (fi) * 2015-12-22 2017-10-13 Outotec Finland Oy Sähkökemiallinen reaktori, vedenkäsittelylaitteisto ja -järjestelmä sekä menetelmä vedenkäsittelylaitteiston ohjaamiseksi
MX2019002720A (es) * 2016-09-09 2019-07-22 Glencore Tech Pty Ltd Mejoras en barras de suspension.
JP6962102B2 (ja) * 2017-09-26 2021-11-05 住友金属鉱山株式会社 電解精製用のアノードの製造方法
CN111286761A (zh) * 2018-12-10 2020-06-16 上海奇谋能源技术开发有限公司 一种提高电解阳极板效率的方法
CN111286754A (zh) * 2018-12-10 2020-06-16 上海奇谋能源技术开发有限公司 一种提高直接电解有色金属碎料效率的方法
EP3748041A1 (fr) 2019-06-03 2020-12-09 Permascand Ab Ensemble d'électrode pour processus électrochimiques
CN110158117B (zh) * 2019-06-26 2025-01-03 中国恩菲工程技术有限公司 组合式铜电解阳极
DE102021115671B3 (de) 2021-06-17 2022-01-27 Aurubis Ag Gießform und Kupferanode zur Herstellung von hochreinem Kupfer

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PE20141387A1 (es) 2014-11-04
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JP2014530295A (ja) 2014-11-17
MX2014003239A (es) 2014-11-14
KR20140090153A (ko) 2014-07-16
US20140262761A1 (en) 2014-09-18
DE112012003846T5 (de) 2014-07-10

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