WO2014082186A1 - Déflecteur de sphères antinébulisantes, employé dans des cellules électrolytiques de revêtement et de production de métaux - Google Patents

Déflecteur de sphères antinébulisantes, employé dans des cellules électrolytiques de revêtement et de production de métaux Download PDF

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Publication number
WO2014082186A1
WO2014082186A1 PCT/CL2013/000076 CL2013000076W WO2014082186A1 WO 2014082186 A1 WO2014082186 A1 WO 2014082186A1 CL 2013000076 W CL2013000076 W CL 2013000076W WO 2014082186 A1 WO2014082186 A1 WO 2014082186A1
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WO
WIPO (PCT)
Prior art keywords
deflector
spheres
sphere
mesh
fogging
Prior art date
Application number
PCT/CL2013/000076
Other languages
English (en)
Spanish (es)
Inventor
Pedro Aylwin GOMEZ
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.
Publication of WO2014082186A1 publication Critical patent/WO2014082186A1/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

Definitions

  • This development consists of a Sphere Deflector, to be used in electrolytic cells for metal production or metal coating, which are used in Mining and Electroplating.
  • One of the methods to reduce the emission of acid mist in the Electrolytic Cells uses a mantle of one or more layers of polypropylene spheres on the surface of the electrolyte.
  • part of the spheres crawls with it, covering the perforations of the perforated retention plates of the spheres, decreasing the flows, affecting the performance of the pumps and the operation itself, sometimes forcing it to stop the process to proceed to the cleaning of said elements, with the consequent loss of production.
  • the electrolytic deposit of metals is normally carried out in Masonry Cells, coated with electrical insulating materials, resistant to acids, alkalis and temperature.
  • a removable insulating structure to position anodes and cathodes described in Chilean Patent 45288 (application 1020-04), has been introduced into the Cell. In these cells, the fresh electrolyte is fed by a longitudinal end, while the spent electrolyte is discarded by the opposite longitudinal end.
  • one of the methods used to control the emission of acid mist is based on the use of a mantle of one or more layers of polypropylene spheres between 12 and 20 mm in diameter, on the surface of the electrolyte.
  • Figure 1 shows a front elevation view of the Sphere Deflector frame, in a version with two holes for mounting and a box to indicate marks.
  • Figure 2 shows a profile view of the Sphere Deflector frame.
  • Figure 3 shows a front elevation view of the Sphere Deflector frame, in a version with two holes for mounting, without box to indicate marks.
  • Figure 4 shows a front elevation view of the Sphere Deflector frame, in a version with four mounting holes.
  • Figure 5 shows a plan view of the separator for mounting the Sphere Deflector, in a circular version.
  • Figure 6 shows a plan view of the mesh of the Sphere Deflector.
  • Figure 7 shows a perspective view of the removable insulating structure to position anodes and cathodes, with the Ball Deflector pre-mounted at one of its ends.
  • Figure 8 shows a view in longitudinal vertical section of the end where the sump is located, of an Electrolytic Cell of metal production, with the Sphere Deflector of this Utility Model, mounted in its position.
  • Figure 9 shows a longitudinal vertical sectional view of the end where the sump is located, of an electrolytic cell of metal production, with the traditional Sphere retainer mounted in its position.
  • Figure 10 shows a top plan view of the end where the sump is located, of an electrolytic cell of metal production, with the Sphere deflector of this Development, mounted in its position.
  • Figure 11 shows a top plan view of the end where the sump is located, of an electrolytic cell of metal production, with the traditional Sphere retainer mounted in its position.
  • This development consists of a Sphere Deflector, to be installed at the entrance of the drain of the Electrolytic Cells that use polypropylene spheres, whether they are used in Electroplating or in the production of metals.
  • This Sphere Deflector comprises a beveled Frame (1) with two or more perforations for mounting (3), a mesh (2) to deflect the spheres, and two or more spacers (14) for mounting in the Electrolytic Cell in front of the sump .
  • the Sphere Deflector has materialized by manufacturing the Frame (1) in fiberglass reinforced plastic, leaving the mesh (2) of the Sphere Deflector inserted during its construction, at the center of the multiple layers of fiberglass applied, then making the perforations for assembly, in which the mesh crosslinking is rectangular and one of the spacing between rods is smaller than the diameter of the anti-fogging spheres used.
  • the Sphere Deflector has been materialized using two AISI 316 L stainless steel Frames (1), with four perforations (3) and a mesh (2) of the same material.
  • the Sphere Deflector is formed at the time of assembly by placing the mesh (2) between the two frames (1), fastening the three elements to the wall of the Cell, with four screws as fasteners and placing four circular washers (14) of a height less than the diameter of the spheres used, between the Sphere Deflector and the Wall of the Electrolytic Cell, in which the mesh cross-linking is square and its separation is smaller than the diameter of the anti-fogging spheres used.
  • the two mounting spacers (14) have been incorporated into the frame (1) during their manufacture in fiberglass reinforced plastic, thus being fixed to the frame of Figure 3.
  • the four mounting dividers (14), have been incorporated into the frame (1) during its manufacture in fiberglass reinforced plastic, thus being fixed to the frame as shown in Figure 4 .
  • the Sphere Deflector is pre-mounted in a removable insulating Structure to position anodes and cathodes, at the end that will face the Cell sink when introduced into it, as shown in Figure 7, facilitating its cleaning every time the Insulating Structure is removed from the Cell.
  • the Sphere Deflector was materialized by a pentagonal frame, formed by a non-bevelled upper horizontal straight section, two straight downward vertical bevels beveled on the outside, forming right angles one at each end of the horizontal section and two bevelled inclined straight sections forming obtuse angles with adjacent verticals.
  • the Sphere Deflector framework was materialized by a non-bevelled upper horizontal straight section, two vertical straight downward bevelled sections forming right angles one at each end of the horizontal section, and a circular bevelled section by the outer arch, with its center located above the arch.
  • the Mounting of the Ball Deflector to the Cell wall can also be carried out by means of other fixing systems that allow easy removal, such as the system that employs two circular perforations, one with a diameter greater than that of the bolt head that is fixed to the wall. and the other one with a diameter smaller than the head and slightly larger than the diameter of the cylindrical body of the fixing element, a perforation that connects to the perforation of greater diameter, by a straight groove of a width equal to the smaller diameter, taking care that preferably , the acute angle of the bevel is located in front of the sump wall.
  • other fixing systems that allow easy removal, such as the system that employs two circular perforations, one with a diameter greater than that of the bolt head that is fixed to the wall. and the other one with a diameter smaller than the head and slightly larger than the diameter of the cylindrical body of the fixing element, a perforation that connects to the perforation of greater diameter, by a straight groove of a width equal to the smaller diameter, taking care that preferably , the acute
  • This device being separated from the wall of the sump only by the thickness of the spacers (14), thickness with a dimension slightly smaller than the diameter of the spheres that are used, together with its beveled design causes the speed to accelerate in passing from the electrolyte to the sump, which causes it to desorb the dissolved oxygen in it.
  • the small separation to the wall of the sump frees longitudinal space in the Cell, which allows adding up to three anodes and cathodes more, increasing the production capacity of the same Cell by up to 5%.
  • the operating conditions were set according to those established by the Plant, except for the circulation of electrolyte that was 20 cubic meters per hour. After a week of operation, no spheres were observed that would have passed through the deflector mesh. The cell electrolyte was emptied, and the cathode was harvested. The campaign was carried out normally, not observing any operational problem despite having increased production by approximately 5%.
  • Another example of application was made in the same electrolytic cell of the copper production plant, this time assembling the Sphere Deflector of this Development, in front of the sump, with four circular separators 18 mm high, repeating the same conditions of the example previous, reproducing the same results.

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 déflecteur de sphères, destiné à être utilisé dans des cellules électrolytiques de production de métaux. L'objectif de ce déflecteur est d'éviter la saturation des perforations des plaques perforées servant à retenir les sphères (utilisées pour réduire le brouillard acide) qui réduisent les flux et le rendement des pompes, ce qui oblige dans certains cas à arrêter le processus pour procéder au nettoyage desdits éléments. Lorsqu'on installe le déflecteur de sphères de ce type, à l'entrée du réservoir d'électrolyte épuisé, le type de tamis de retenue, conjointement aux bords biseautés de celui-ci et l'utilisation de séparateurs pour maintenir le tamis à une distance déterminée de la paroi de la cellule dans laquelle se situe le réservoir, permettent d'éviter que les sphères soient retenues dans les ouvertures du tamis ou qu'elles obstruent ces dernières, ce qui empêche ainsi les sphères d'entraver l'opération, comme le montre la figure 10.
PCT/CL2013/000076 2012-11-27 2013-10-18 Déflecteur de sphères antinébulisantes, employé dans des cellules électrolytiques de revêtement et de production de métaux WO2014082186A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CL2012003318 2012-11-27
CL3318-2012 2012-11-27

Publications (1)

Publication Number Publication Date
WO2014082186A1 true WO2014082186A1 (fr) 2014-06-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CL2013/000076 WO2014082186A1 (fr) 2012-11-27 2013-10-18 Déflecteur de sphères antinébulisantes, employé dans des cellules électrolytiques de revêtement et de production de métaux

Country Status (1)

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WO (1) WO2014082186A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995027811A1 (fr) * 1994-04-12 1995-10-19 Bechtel Group, Inc. Ensemble embout d'electrode/couvercle de cuve servant a recueillir des vapeurs d'acides
WO1998000585A1 (fr) * 1996-06-28 1998-01-08 Aon International, Inc. Agent de neutralisation destine a reduire les emissions de brouillard chimique metallique provenant d'unites d'electrolyse
WO2005019502A1 (fr) * 2003-08-22 2005-03-03 Bhp Billiton Innovation Pty. Ltd. Barbotage
US20080302654A1 (en) * 2007-06-07 2008-12-11 Percy Danilo Yanez Castaneda Desludging System for Electrolytic Cells
WO2009016190A2 (fr) * 2007-07-31 2009-02-05 Ancor Tecmin S. A. Système servant à suivre, contrôler et gérer une installation dans laquelle sont effectués des procédés hydrométallurgiques de raffinage électrolytique et d'extraction électrolytique pour des métaux non ferreux

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995027811A1 (fr) * 1994-04-12 1995-10-19 Bechtel Group, Inc. Ensemble embout d'electrode/couvercle de cuve servant a recueillir des vapeurs d'acides
WO1998000585A1 (fr) * 1996-06-28 1998-01-08 Aon International, Inc. Agent de neutralisation destine a reduire les emissions de brouillard chimique metallique provenant d'unites d'electrolyse
WO2005019502A1 (fr) * 2003-08-22 2005-03-03 Bhp Billiton Innovation Pty. Ltd. Barbotage
US20080302654A1 (en) * 2007-06-07 2008-12-11 Percy Danilo Yanez Castaneda Desludging System for Electrolytic Cells
WO2009016190A2 (fr) * 2007-07-31 2009-02-05 Ancor Tecmin S. A. Système servant à suivre, contrôler et gérer une installation dans laquelle sont effectués des procédés hydrométallurgiques de raffinage électrolytique et d'extraction électrolytique pour des métaux non ferreux

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