EP2015880B1 - Method for cooling anodes - Google Patents

Method for cooling anodes Download PDF

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Publication number
EP2015880B1
EP2015880B1 EP07730585.2A EP07730585A EP2015880B1 EP 2015880 B1 EP2015880 B1 EP 2015880B1 EP 07730585 A EP07730585 A EP 07730585A EP 2015880 B1 EP2015880 B1 EP 2015880B1
Authority
EP
European Patent Office
Prior art keywords
anode
cooling
water
mold
onto
Prior art date
Legal status (The legal status 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 status listed.)
Not-in-force
Application number
EP07730585.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2015880A4 (en
EP2015880A1 (en
Inventor
Juha Lumppio
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metso Outotec Oyj
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 PL07730585T priority Critical patent/PL2015880T3/pl
Publication of EP2015880A1 publication Critical patent/EP2015880A1/en
Publication of EP2015880A4 publication Critical patent/EP2015880A4/en
Application granted granted Critical
Publication of EP2015880B1 publication Critical patent/EP2015880B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D30/00—Cooling castings, not restricted to casting processes covered by a single main group
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D25/00—Special casting characterised by the nature of the product
    • B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
    • B22D25/04—Casting metal electric battery plates or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D5/00—Machines or plants for pig or like casting
    • B22D5/02—Machines or plants for pig or like casting with rotary casting tables
    • 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
    • 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

  • the present invention relates to a method for cooling anodes in connection with anode casting.
  • the blister copper created in the conversion step of the pyrometallurgic copper process is further refined in an anode furnace in order to lower the sulfur content of blister copper.
  • copper is cast into copper anodes by pouring molten copper into casting molds.
  • the cast copper anodes are purified in copper electrolysis into copper cathodes with a copper content of over 99.99%.
  • the most widely used anode casting equipment comprises a rotary casting table, where several, often tens of casting molds are arranged in a circle.
  • the casting table is provided with a cooling unit, where the pieces are cooled in their casting molds for example by water.
  • an anode cast in a mold cannot be cooled before the surface is sufficiently solid.
  • a cast anode with a temperature of roughly 1150° C must be cooled in order to be able to disengage it from the mold, generally at a temperature of roughly 700 - 900° C. It is known from these documents to cool anodes while the anode casting table rotates, so that at the spot where the casting wheel stops, there are arranged nozzles above the anodes for spraying cooling water onto the anode surface.
  • a hood for removing vapor created in the cooling process.
  • Anodes are known to be cooled by directing a water jet onto the anode surface, when the anode surface is sufficiently solidified, and hence the water jet directed to the anode does not harm its surface.
  • the cooling capacity of the casting table can be adjusted during momentary changes in the casting capacity, so that a desired heat amount can be removed from the anodes prior to lifting them into the cooling tank.
  • Water spraying is controlled according to the casting situation, and it can be for example interrupted, if cooling is not needed owing to an interruption in the casting process.
  • the resulting problem are the disturbances caused by excessive cooling water. If too much water is sprayed at the first water cooling spot, there is created an insulating water foam layer on the anode surface owing to the effect of boiling water. In case water is added after that, the created water foam layer prevents the cooling water from proceeding onto the anode surface, and the sprayed water only participates in preserving the water foam layer. Thus the problem is that while the anode is in the mold, the water accumulated on the anode surface cannot be removed from the mold, but it remains to disturb the cooling process.
  • the object of the present invention is to eliminate drawbacks of the prior art and to realize a new method to make the anode cooling more effective in connection with anode casting.
  • a particular object of the invention is to make cooling more effective by removing cooling water from anode surfaces in between the cooling steps.
  • anodes are cooled in connection with casting, so that molten metal is cast in a mold of an anode casting wheel, said anode casting wheel moving the anode cast in a mold into an anode cooling unit, where the anode is cooled by feeding water onto the anode surface in at least two steps, after which cooling the anode is disengaged from the mold in a disengaging unit, so that cooling water is removed from the anode surface in the cooling unit in between cooling steps, at least once before removing the anode from the cooling unit.
  • cooling water is removed from the anode surface by directing onto the surface of a moving anode a jet of a medium agent, such as a water jet by means of 10 to 120 liters per minute at a pressure of 3 to 5 bar, or an pressurized air jet, by at least two nozzles, at a suitable angle of 20 - 50 degrees with respect to the anode surface.
  • a medium agent such as a water jet by means of 10 to 120 liters per minute at a pressure of 3 to 5 bar, or an pressurized air jet, by at least two nozzles, at a suitable angle of 20 - 50 degrees with respect to the anode surface.
  • the medium agent jet is fed onto the anode surface at a suitable height, i.e. at a height of 200 - 300 millimeters from the anode surface.
  • the anode surface is cooled by feeding cooling water onto the anode surface in five cooling steps, so that water is removed from the anode surface at least twice.
  • the cooling water is removed from the anode surface in a direction opposite to the rotary direction of the anodes in the casting wheel. Thus the removed cooling water does not disturb anode casting.
  • the equipment includes a dewatering system constituting at least two adjacently positioned nozzles for feeding a medium agent, such as water or air, onto the anode surface.
  • a medium agent such as water or air
  • the position of the dewatering system is adjustable. If the arrangement according to the invention is used for the water cooling of anodes, it does not increase the cost of the casting equipment, because water can be recycled, and the same water can be used both for cooling and for anode peeling.
  • the method includes two dewatering systems arranged in succession, both of which are provided with nozzles in at least one row, so that the distance between successively effective jet rows is preferably 50 - 200 millimeters.
  • FIGS 1 , 2 and 3 illustrate an equipment for anode cooling.
  • An anode casting equipment 1 includes an anode casting wheel 2, in the molds 3 of which anodes 4 are cast. When molten metal, such as copper, is cast in a mold 3, its temperature is roughly 1150° C. After the anode is cast, it is transferred along with the rotation of the anode casting wheel 2 to the next anode casting step, i.e. to the cooling step.
  • the surface 6 of the anode 4 is cooled, in order to lower its temperature prior to disengaging the anode from the mold.
  • the cooling unit 5 is provided with a hood 7, through which the vapors created during the cooling process are removed.
  • cooling unit 5 onto the surface 6 of the anode 4, there is fed cooling water 8 by upper water jets 9 positioned above the anodes.
  • the anode is conveyed to be cooled in the next cooling step, if necessary.
  • the anode proceeds to the disengagement step 10, where the anode is disengaged from the mold 3 while the anode temperature is 700 - 900 degrees. Then the anode 4 is transferred further to the cooling and purification step 21, and when necessary, to further treatment.
  • cooling step is understood to be a step where cooling water is sprayed onto the anode surface for a necessary time by the top water jets 9.
  • the cooling step 11 where cooling water is sprayed onto the anode surface 6 for cooling the anode.
  • the means for removing the cooling water i.e. the dewatering system 16, is at least partly positioned in the space left in between the molds 3 arranged in the anode casting wheel.
  • Cooling water 8 is removed from the anode surface 6 by pressurizing, for instance by a pump, water onto the anode surface, so that the water dislocates the cooling water from the anode surface.
  • a water connection 22 from which the water to both the top water jet and to the dewatering system 16 can be taken.
  • the water is pressurized in a pipe 17 or the like extending along the width of the anode 4, through which the water is further fed to the nozzles 18.
  • a suitable pressure such as 3 - 5 bar
  • the excessive water located on the anode surface is peeled onto the opposite side of the anode surface 6, with respect to the proceeding direction 20 of the anode.
  • the anode 4 is nearly dry before the next cooling step 12, and cooling water can be added and thus the cooling process can be boosted.
  • an anode is cooled in five different cooling steps 11 - 15, in which case cooling water is removed from the anode surface in two steps, after the first water cooling 11 and immediately before removing the anode from the cooling unit 5 after the last cooling step 15.
  • cooling water could be removed from the anode surface within the scope of the embodiments of the invention also after each water cooling step 11 - 15.
  • water is fed onto the anode surface at a distance C, which according to the example is located at 200 - 300 millimeters from the anode surface, so that the peeling effect created by the infed aqueous curtain 19 is most advantageous.
  • An advantageous solution for an effective removal of cooling water is to place the nozzles at an angle B of 20 - 50 degrees with respect to the surface 6 of the moving anode.
  • nozzles 18 can also be arranged for feeding water in several rows, in which case the number of the pipes 17 can also be two or more. When necessary, part of the nozzles 18 can be taken away from use, and they can be used only for part of the anodes.
  • Figure 3 it is shown how the pipe 17 and the nozzles 18 are arranged with respect to the mold 3.
  • the angle D between the dewatering system 16 and the top water jet 9 can vary according to where the cooling water to be removed is directed by means of the peeling aqueous curtain 19.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Prevention Of Electric Corrosion (AREA)
EP07730585.2A 2006-05-04 2007-05-03 Method for cooling anodes Not-in-force EP2015880B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07730585T PL2015880T3 (pl) 2006-05-04 2007-05-03 Sposób schładzania anod

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20060429A FI119591B (fi) 2006-05-04 2006-05-04 Menetelmä ja laitteisto anodin jäähdyttämiseksi
PCT/FI2007/000116 WO2007128861A1 (en) 2006-05-04 2007-05-03 Method and equipment for cooling anodes

Publications (3)

Publication Number Publication Date
EP2015880A1 EP2015880A1 (en) 2009-01-21
EP2015880A4 EP2015880A4 (en) 2010-05-19
EP2015880B1 true EP2015880B1 (en) 2014-02-26

Family

ID=36539876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07730585.2A Not-in-force EP2015880B1 (en) 2006-05-04 2007-05-03 Method for cooling anodes

Country Status (14)

Country Link
US (1) US20090173469A1 (pl)
EP (1) EP2015880B1 (pl)
JP (1) JP5044642B2 (pl)
KR (1) KR101420146B1 (pl)
CN (1) CN101437638B (pl)
AU (1) AU2007247067B2 (pl)
BR (1) BRPI0711287A2 (pl)
CA (1) CA2650888C (pl)
EA (1) EA013363B1 (pl)
FI (1) FI119591B (pl)
MX (1) MX2008013889A (pl)
PL (1) PL2015880T3 (pl)
WO (1) WO2007128861A1 (pl)
ZA (1) ZA200808797B (pl)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI120931B (fi) * 2008-02-29 2010-05-14 Outotec Oyj Menetelmä anodien valamiseksi ja anodivalulaitteisto
CN102339469B (zh) * 2010-07-21 2015-11-25 腾讯科技（深圳）有限公司 图像处理方法和装置
LU91880B1 (en) * 2011-09-28 2013-03-29 Wurth Paul Sa Dust emission reduction during metal casting
EP2589903A1 (de) * 2011-11-02 2013-05-08 R & D Carbon, Ltd. Kühlsystem
CN103028721A (zh) * 2012-10-24 2013-04-10 广西有色再生金属有限公司 一种中心驱动的双模圆盘浇铸机及其浇铸方法
CN103212699B (zh) * 2013-04-02 2015-03-04 云南锡业机械制造有限责任公司 圆盘式定模连续自动浇铸机
CN103170610A (zh) * 2013-04-10 2013-06-26 广西有色再生金属有限公司 利用双模圆盘浇铸机中间包浇铸阳极铜模的装置及其浇铸方法
CN104690237A (zh) * 2015-01-07 2015-06-10 赣州金玛机械设备有限公司 一种全自动定量单圆盘阳极浇铸设备
CN104959537B (zh) * 2015-06-16 2017-08-01 云南锡业股份有限公司 一种控制浇铸阳极板铜模变形的方法
CN108044065A (zh) * 2018-01-23 2018-05-18 广西欧迪姆重工科技有限公司 一种多工位环形间歇回转循环铸造的浇铸工艺

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2241832C3 (de) * 1972-08-25 1975-02-27 Demag Ag, 4100 Duisburg Anlage zum Vergießen von plattenförmigen Metallteilen, insbes. Kupferanoden
AU473863B2 (en) * 1974-02-15 1976-06-17 Mitsui Mining & Smelting Co., Ltd. Method for casting alarge lead anode plate
JPS5881550A (ja) * 1981-11-05 1983-05-16 Sumitomo Metal Mining Co Ltd 回転鋳造機の鋳型冷却装置
JPS62104665A (ja) * 1985-11-01 1987-05-15 Akita Seiren Kk 金属の鋳造冷却方法
JPH04178238A (ja) * 1990-11-14 1992-06-25 Sumitomo Metal Mining Co Ltd 銅アノード鋳造鋳型温度制御装置
JPH04253562A (ja) * 1991-01-31 1992-09-09 Sumitomo Metal Mining Co Ltd 銅アノード温度制御装置
JPH05237637A (ja) * 1992-02-25 1993-09-17 Mitsui Mining & Smelting Co Ltd 金属溶湯冷却装置
JP3118981B2 (ja) * 1992-09-02 2000-12-18 住友金属鉱山株式会社 電解用アノード鋳造機
JPH0732090A (ja) * 1993-07-14 1995-02-03 Sumitomo Metal Mining Co Ltd アノードの冷却方法
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JP3196814B2 (ja) * 1996-02-02 2001-08-06 住友金属鉱山株式会社 アノード鋳造におけるアノード内部欠陥検出方法
ATE274390T1 (de) * 1999-11-25 2004-09-15 Sms Demag Ag Verfahren und vorrichtung zum abreinigen gegossener kupferanoden von anhaftenden resten einer kalk- und schwerspatverkrustung
EP1210993B2 (en) * 2000-03-01 2016-07-06 JFE Steel Corporation Device and method for cooling hot rolled steel band and method of manufacturing the hot rolled steel band
JP3932893B2 (ja) * 2001-12-28 2007-06-20 住友金属鉱山株式会社 銅電解用アノードの表面膨れ防止方法
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Also Published As

Publication number Publication date
FI20060429A (fi) 2007-11-05
ZA200808797B (en) 2009-12-30
US20090173469A1 (en) 2009-07-09
BRPI0711287A2 (pt) 2011-08-23
JP5044642B2 (ja) 2012-10-10
AU2007247067A1 (en) 2007-11-15
JP2009535220A (ja) 2009-10-01
CA2650888A1 (en) 2007-11-15
EP2015880A4 (en) 2010-05-19
EA013363B1 (ru) 2010-04-30
KR20090010969A (ko) 2009-01-30
PL2015880T3 (pl) 2014-08-29
FI119591B (fi) 2009-01-15
CN101437638B (zh) 2011-03-30
FI20060429A0 (fi) 2006-05-04
MX2008013889A (es) 2008-11-10
AU2007247067B2 (en) 2011-09-15
EA200802085A1 (ru) 2009-04-28
EP2015880A1 (en) 2009-01-21
KR101420146B1 (ko) 2014-07-17
CN101437638A (zh) 2009-05-20
CA2650888C (en) 2016-06-28
WO2007128861A1 (en) 2007-11-15

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