WO2013016929A1 - Procédé de démarrage du préchauffage d'une cellule d'électrolyse en aluminium - Google Patents

Procédé de démarrage du préchauffage d'une cellule d'électrolyse en aluminium Download PDF

Info

Publication number
WO2013016929A1
WO2013016929A1 PCT/CN2011/084504 CN2011084504W WO2013016929A1 WO 2013016929 A1 WO2013016929 A1 WO 2013016929A1 CN 2011084504 W CN2011084504 W CN 2011084504W WO 2013016929 A1 WO2013016929 A1 WO 2013016929A1
Authority
WO
WIPO (PCT)
Prior art keywords
preheating
electrode
electrolytic cell
heating
aluminum
Prior art date
Application number
PCT/CN2011/084504
Other languages
English (en)
Chinese (zh)
Inventor
杨建红
唐新平
曹鹏
包生重
Original Assignee
中国铝业股份有限公司
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 中国铝业股份有限公司 filed Critical 中国铝业股份有限公司
Publication of WO2013016929A1 publication Critical patent/WO2013016929A1/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
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/20—Automatic control or regulation of cells
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/14—Devices for feeding or crust breaking

Definitions

  • the invention relates to the technical field of aluminum electrolytic cells, in particular to a preheating starting method for an aluminum electrolytic cell. Background technique
  • the newly built or overhauled aluminum electrolysis cell undergoes a roasting and start-up process before it enters production.
  • the roasting start-up process of the conventional tank mainly uses the heat generating material placed between the anode and the cathode of the aluminum electrolytic tank to generate heat, so that the temperature of the anode and the cathode (including the lining) of the electrolytic bath rises.
  • the aluminum liquid roasting method and the coke roasting method have different degrees of damage to the cathode, and the roasting of the artificial leg is poor, which adversely affects the life of the groove.
  • the electrolysis cell When the electrolysis cell is started, the electrolysis cell is connected to a series of currents to form the basic technical conditions required for the electrolysis reaction, and the main technical parameters of the aluminum electrolysis cell (pole pitch, cell voltage, bath temperature, electrolyte composition) , alumina concentration, etc.) enter the range required for electrolysis. After the start of the roasting, it is necessary to gradually establish energy balance and material balance through a long period of post management.
  • the roasting start method of the traditional electrolytic cell is prone to current bias current, causing local overheating of the cathode; the aluminum liquid roasting is not suitable for the roasting start of the large preparatory tank due to its own characteristics; the coke grain roasting has poor roasting of the artificial leg, and the electrolyte charcoal residue after starting is required to be removed. Cinder, labor and materials.
  • the inert anode is used for the tank body.
  • the tank body is made of graphite or carbon.
  • the electrode after the installation is like a carbon anode. It can be used during roasting start or pole change to avoid heat, electricity and heat. Corrosive gas impact. After the power is turned on, the can is consumed. When the inert electrode is exposed, the electrode naturally transitions to the working state.
  • a vertical current inert electrolytic cell is used, and the electrolytic cell is started by roasting with a carbon anode. After the electrolytic cell is stably operated, it is replaced with an inert electrode group.
  • Chinese patent 200910043018.9 provides a coke grain roasting starting method for a ceramic-based inert anode aluminum electrolysis cell, firstly plating a metallization layer on the surface of the anode, and laying graphite powder or metallurgy between the anode and the bottom of the tank at the start of the operation of the electrolytic cell. The mixture of coke and calcined petroleum coke is used as a heat generating layer; the preheating roasting of the electrolytic cell is controlled at 48-96 hours.
  • Chinese patent 200910243383.4 provides a preheating start method for an inert anode aluminum electrolytic cell, mainly using an electric heating assembly in which the furnace is laid in accordance with the number of electrode groups, filled with electrolyte in the furnace, and heated to melt the electrolyte to continue to be added.
  • the electrolyte is at the desired level. After that, reduce the power of the heating unit and simulate the heat generation of the electrolytic cell during normal operation. After the technical parameters are stabilized, gradually replace the heating resistor with the inert electrode.
  • the protective layer is overcoated on the cathode during the preheating of the electrolysis cell.
  • the innermost layer of the protective layer contacts the carbon cathode with a titanium boride layer, the intermediate layer is a metal aluminum or alloy, and the outermost layer is carbon.
  • the gas is calcined, and the anode is a cermet anode.
  • the protective layer of the anode is derived from oxidation during the calcination to oxidize its surface layer.
  • the technical problem to be solved by the invention is to provide an aluminum electrolysis which can effectively and uniformly heat the electrolyte, is beneficial to the protection of the cathode, increases the life of the tank, shortens the post management time, and provides a stable electrolysis environment before the inert electrode is operated normally.
  • the preheating start method of the tank is to provide an aluminum electrolysis which can effectively and uniformly heat the electrolyte, is beneficial to the protection of the cathode, increases the life of the tank, shortens the post management time, and provides a stable electrolysis environment before the inert electrode is operated normally.
  • the present invention provides a preheating starting method for an aluminum electrolytic cell, comprising:
  • the carbon or graphite electrode block is drilled downward from the surface, and the heating element is pre-buried into the bore of the carbon or graphite electrode to form an electrolysis cell preheating electrode;
  • the preheating electrode equipped with the heating element is placed in the electrolytic cell, and the preheating electrode is fixed on the large busbar of the electrolytic cell by the clamp; the solid electrolyte is filled in the furnace, and the heating component is first connected to the alternating current, and the heating component is used according to the baking curve. Heating the furnace; After the furnace reaches the target temperature, the solid or liquid electrolyte is added to the required electrolyte level, and then the power of the heating assembly is adjusted until the energy input of the electrolytic cell is normal, and the heat balance required for the electrolytic cell and the inner shape of the furnace are established;
  • the electrolysis cell When the electrolytic cell reaches the expected heat balance state and the inner shape of the furnace, the electrolysis cell is supplied with direct current, and the preheating electrode starts to electrolyze; the heating element power is adjusted or the alternating current heating state is stopped, and the electrolyte temperature is stabilized at the target temperature;
  • the preheating electrode carrying the heating element is replaced with the normal operating electrode one by one to complete the preheating start of the electrolyzer.
  • the preheating starting method of the aluminum electrolytic cell can solve the main shortcomings of the conventional aluminum electrolytic baking start, and the heating is hooked, and the soft connection between the anode and the bus bar is not required during the preheating process, and the cathode can be effectively preheated into a special structure.
  • the traditional trough can improve the life of the traditional aluminum electrolysis cell; it can also effectively preheat the inert electrode aluminum electrolysis cell (vertical current electrolyzer or horizontal current electrolyzer) to establish a stable electrolysis environment before the inert electrode works, improve current efficiency, and increase Electrode life.
  • the preheating electrode can be reused to reduce the startup cost of the cell.
  • FIG. 1 is a schematic structural view of a preheating electrode for a preheating start of a conventional aluminum electrolytic cell according to an embodiment of the present invention
  • FIG. 2 is a schematic view showing the structure of a preheated anode for a vertical inertial electrode aluminum electrolytic cell according to an embodiment of the present invention. detailed description
  • the preheating starting method of the aluminum electrolytic cell provided by the embodiment of the invention is as follows: Step 10: The electrolytic cell preheating electrode is drilled on the surface of the carbon or graphite electrode, and the heating element is embedded in the electrode.
  • the number and power of the heating elements can be determined according to the size of the electrolytic cell and the required heating power.
  • the number of preheating electrodes is the same as that of the normal operating electrode of the electrolytic cell, and the structure is similar in size, and can be connected to the large busbar of the electrolytic cell like the normal operating electrode.
  • Step 20 In the preheating stage, the preheating electrode equipped with the heating component is placed in the electrolytic cell, and the preheating electrode is fixed to the large busbar of the electrolytic cell by using a clamp. Fill the furnace with solid electrolyte, first The heating element is energized by alternating current, and the heating element is used to heat the furnace according to the firing curve.
  • Step 30 After the target temperature is reached, the solid or liquid electrolyte is added to the desired electrolyte level, and then the power of the heating element is adjusted until the energy input of the electrolytic cell is normal, and the heat balance and the furnace internal type required for the electrolytic cell are initially established.
  • Step 40 When the electrolytic cell reaches the expected heat balance state and the inner shape of the furnace, the electrolysis cell is supplied with direct current, and the preheating electrode starts to electrolyze. Through the control system, the heating element power is adjusted or the AC heating state is stopped to stabilize the electrolyte temperature at the target temperature, and the electrolytic cell gradually enters the electrolysis and self-heating state.
  • Step 50 After the cell voltage and the electrolysis temperature are stabilized, the preheating electrode carrying the heating element is replaced by the normal running electrode (the conventional electrolytic cell uses a carbon anode, and the inert electrolytic cell uses an inert electrode), and the electrolysis cell preheating starts smoothly. End.
  • the normal running electrode the conventional electrolytic cell uses a carbon anode, and the inert electrolytic cell uses an inert electrode
  • the preheating electrode can adopt the carbon anode for production; for the vertical inert electrode aluminum electrolytic cell, the preheating electrode comprises a preheating anode and a preheating cathode, Carbon or graphite electrodes with the same or similar appearance as inert electrodes (including inert anodes, inert cathodes);
  • the preheating electrodes can be made of carbon or graphite electrodes of the same or similar shape as the inert anodes.
  • the solid electrolyte is filled in the furnace or the solid electrolyte is not filled; the pole pitch of the preheating electrode is the same as or different from the normal electrode pole pitch.
  • the vertical inert electrode aluminum electrolytic cell preheating electrode is composed of carbon or graphite electrode, heating element, corrosion resistant material protective layer, plate bus bar and guide rod.
  • the electrode heating assembly exposes the graphite electrode portion and the guide rod is wrapped by a protective layer of corrosion resistant material.
  • the protective layer of corrosion resistant material is high alumina porcelain, corundum, corrosion resistant castable, boron nitride, and silicon carbide.
  • the furnace before the power is turned on, the furnace is filled with aluminum water or not filled with aluminum water; the preheating cathode has heating elements or no heating elements.
  • a conventional 300KA aluminum electrolytic cell uses a carbon anode to make a preheating electrode.
  • the upper surface of the carbon anode 1 is drilled and placed in the heating element 2.
  • the anode does not need to be connected to the busbar by a soft connection, and the fixture is preheated.
  • the electrode bus bar 3 is fixed on the aluminum bus bar, and the number of preheating electrodes is the same as the number of anodes in normal production.
  • the furnace is filled with solid electrolyte, and cryolite and soda ash are added to the tank and anode to maintain heat and avoid anodization.
  • the heating element is connected to the alternating current, and heating is started according to the heating system.
  • the furnace temperature is heated to 950 ° C, continue to add solid electrolyte until the electrolyte level is 25 cm, add fluoride salt, adjust the electrolyte composition, adjust the heating component power to simulate the electrolysis state heat input, when the electrolyzer reaches the expected thermal equilibrium state and the furnace In the case of type, disconnect the alternating current and apply direct current to make the preheating electrode enter the electrolysis state.
  • the electrolysis cell stops the heating state of the heating element, enters the electrolysis and self-heating state, and adjusts the pole pitch to stabilize the cell voltage and the electrolysis temperature at 3.8V and 935 °C.
  • the preheating electrode was replaced one by one using the normal production carbon anode, and the warm-up start was successfully completed.
  • the traditional 400KA aluminum electrolytic cell has a cathode and a diversion structure. Drilling the upper surface of the carbon anode 1 into the heating element 2, the anode does not need to be connected to the busbar by a soft connection, and the preheating electrode busbar 3 is fixed to the aluminum busbar by a clamp, and the number of preheating electrodes is the same as the number of anodes in normal production. .
  • the furnace is filled with solid electrolyte, and the heating element is connected to alternating current, and heating is started according to the heating system.
  • the furnace temperature is heated to 960 ° C, add liquid electrolyte until the electrolyte level is 23cm, inject 10cm of aluminum water, add fluoride salt, adjust the electrolyte composition, adjust the heating component power to simulate the heat input of the electrolysis state, when the electrolyzer reaches the expected
  • the heat balance state and the furnace inner type the AC power is disconnected, and the direct current is supplied to make the preheating electrode enter the electrolysis state.
  • the electrolysis cell stops heating the heating element, enters the electrolysis and self-heating state, and adjusts the pole pitch to stabilize the cell voltage and electrolysis temperature at 3.82V and 937 °C.
  • the preheating electrode was replaced one by one using the normal production carbon anode, and the preheating start was successfully completed.
  • the vertical inertial electrode aluminum electrolytic cell comprises a graphite electrode 4, a heating element 5, a corrosion resistant material protective layer 6, a plate busbar 7, and a guide rod 8.
  • the upper surface of the graphite electrode 4 is drilled and placed in the heating assembly 5; the preheating electrode heating assembly is wrapped around the exposed graphite electrode portion and the guide rod 8 by the corrosion resistant material protective layer 6.
  • the graphite electrode 4 is connected by a guide bar 8 and a plate bus bar 7.
  • the "preheated cathode” is also made of a graphite electrode, the structure is the same as the "preheated anode", but it is not drilled and there is no heating element.
  • the preheating electrode and the preheating cathode are fixed in the electrolytic cell by means of "one yin, one yang, one yin and one yin".
  • Two electrolytic cells each containing 9 preheated anodes and 10 preheated cathodes.
  • the preheating electrode is connected to the aluminum bus bar, and the preheating electrode pole pitch is smaller than the normal operating electrode pole pitch.
  • the furnace is filled with solid electrolyte, and the heating element is connected to alternating current, and heating is started according to the heating system.
  • the furnace temperature is heated to 800 °C, continue to add solid electrolyte until the electrolyte level is 40cm, add fluoride salt, adjust the electrolyte composition, inject 2cm of aluminum water, adjust the heating component power to simulate the heat input of the electrolysis state, when the electrolyzer reaches the expected
  • the alternating current is turned on, and the direct current is supplied to make the preheating electrode enter the electrolysis state.
  • the electrolysis cell stops the heating state of the heating element, enters the electrolysis and self-heating state, and adjusts the pole pitch to stabilize the cell voltage and the electrolysis temperature at 3.65V and 800°C.
  • the inert anode was used, and the inert cathode was replaced one by one with the preheated anode and the preheated cathode, and the preheating start was successfully completed.
  • Heating anode includes graphite electrode 4, heating element 5, corrosion resistant material protection layer 6, plate busbar 7, guide rod 8.
  • the upper surface of the graphite electrode 4 is drilled and placed in the heating assembly 5; the preheating electrode heating assembly is wrapped around the exposed graphite electrode portion and the guide rod 8 by the corrosion resistant material protective layer 6.
  • the graphite electrode 4 is connected by a guide bar 8 and a plate bus bar 7.
  • the "preheating cathode” is also made of graphite.
  • the "preheating cathode” is also drilled with holes and placed in the heating element; the preheating electrode and the preheating cathode are "one yin_yang"
  • the _Yinyi method is fixed in the electrolytic cell, and there are 4 electrolytic cells, each of which contains 12 preheating anodes and 13 preheating cathodes.
  • the preheating electrode is connected to the aluminum bus bar, and the preheating electrode pole pitch is the same as the normal running electrode pole pitch.
  • the furnace is filled with solid electrolyte, and the heating element is connected to alternating current, and heating is started according to the heating system.
  • the furnace temperature is heated to 800 ° C, continue to add liquid electrolyte until the electrolyte level is 38 cm, add fluoride salt, adjust the electrolyte composition, adjust the heating component power to simulate the electrolysis state heat input, when the electrolyzer reaches the expected thermal equilibrium state and inside the furnace In the case of type, direct current, preheating electrode electrolysis.
  • the power of the heating element is adjusted by the control system to stabilize the electrolysis temperature at 800 °C.
  • the preheated anode and the preheated cathode were replaced one by one with an inert anode and an inert cathode, and the preheating start was successfully completed.
  • preheating electrode adopts carbon anode, drilled in carbon anode, put heating element, fix preheating electrode on aluminum busbar with clamp, preheating electrode number and normal
  • the number of anodes is the same during production, and the pole pitch is slightly smaller than the normal operating electrode pole pitch.
  • the furnace is filled with solid electrolyte, and the heating element is connected to alternating current, and heating is started according to the heating system. When the furnace temperature is heated to

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 se rapporte à un procédé de démarrage du préchauffage d'une cellule d'électrolyse en aluminium, ledit procédé consistant à : percer des trous sur la surface supérieure des électrodes de carbone ou de graphite et préintégrer l'élément chauffant dans l'électrode ; chauffer le creuset de la cellule selon une courbe de torréfaction à l'aide d'un ensemble chauffant ; après l'obtention d'une température cible, ajouter un électrolyte solide ou liquide à un niveau d'électrolyte requis ; ensuite, réguler la puissance de l'ensemble chauffant et établir avant tout un bilan thermique et un moule de creuset interne requis par la cellule d'électrolyse ; introduire un courant continu pour préchauffer des électrodes et électrolyser l'électrolyte ; remplacer petit à petit les électrodes de préchauffage qui supportent les éléments chauffants par les électrodes qui fonctionnent normalement. Le procédé de cette invention permet un chauffage uniforme et n'a pas besoin d'une connexion flexible entre les anodes et les barres omnibus pendant le processus de préchauffage ; par conséquent, il peut être utilisé pour préchauffer de manière efficace une cellule classique qui comprend une cathode qui présente une structure de forme anormale et peut également être utilisé pour préchauffer et mettre en marche de manière efficace une cellule d'électrolyse en aluminium d'électrode inerte, construire un milieu électrolytique stable, améliorer l'efficacité du courant et prolonger la durée de vie de l'électrode. L'électrode de préchauffage peut être réutilisée de sorte à réduire le coût de mise en fonctionnement de la cellule d'électrolyse.
PCT/CN2011/084504 2011-08-04 2011-12-23 Procédé de démarrage du préchauffage d'une cellule d'électrolyse en aluminium WO2013016929A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110221899.6 2011-08-04
CN 201110221899 CN102234819B (zh) 2011-08-04 2011-08-04 一种铝电解槽的预热启动方法

Publications (1)

Publication Number Publication Date
WO2013016929A1 true WO2013016929A1 (fr) 2013-02-07

Family

ID=44885925

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/084504 WO2013016929A1 (fr) 2011-08-04 2011-12-23 Procédé de démarrage du préchauffage d'une cellule d'électrolyse en aluminium

Country Status (2)

Country Link
CN (1) CN102234819B (fr)
WO (1) WO2013016929A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021232147A1 (fr) * 2020-05-01 2021-11-25 Elysis Limited Partnership Système et procédé de démarrage d'une cellule électrolytique

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102234819B (zh) * 2011-08-04 2013-02-13 中国铝业股份有限公司 一种铝电解槽的预热启动方法
CN102534685B (zh) * 2011-12-07 2014-10-08 内蒙古新长江矿业投资有限公司 精铝槽焙烧启动方法
CN102808196B (zh) * 2012-07-27 2014-10-22 中国铝业股份有限公司 一种惰性电极铝电解槽直流分流式预热启动方法
CN103352236A (zh) * 2013-06-25 2013-10-16 中国铝业股份有限公司 一种快速建立新启动电解槽炉膛的方法
CN106400054B (zh) * 2016-06-24 2018-10-12 沈阳汇丰机械有限公司 阴极组装预热站
CN109778231A (zh) * 2019-03-23 2019-05-21 曲靖云铝淯鑫铝业有限公司 一种铝电解槽二次启动的燃气焙烧方法
RU2717438C1 (ru) * 2019-09-24 2020-03-23 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Способ обжига подины алюминиевого электролизёра
CN112410827B (zh) * 2020-11-20 2021-12-14 东北大学 铝电解槽的启动方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101629304A (zh) * 2008-07-17 2010-01-20 沈阳铝镁设计研究院 一种预焙阳极铝电解槽焦粒焙烧启动方法及结构
CN101709484A (zh) * 2009-12-18 2010-05-19 中国铝业股份有限公司 一种惰性阳极铝电解槽的预热启动方法
CN201762461U (zh) * 2010-06-13 2011-03-16 中国铝业股份有限公司 一种惰性阳极铝电解槽的预热启动设备
CN102234819A (zh) * 2011-08-04 2011-11-09 中国铝业股份有限公司 一种铝电解槽的预热启动方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6030518A (en) * 1997-06-26 2000-02-29 Aluminum Company Of America Reduced temperature aluminum production in an electrolytic cell having an inert anode
US6537438B2 (en) * 2001-08-27 2003-03-25 Alcoa Inc. Method for protecting electrodes during electrolysis cell start-up
CN101724862B (zh) * 2009-12-16 2011-09-14 东北大学 一种防止铝电解槽阴极凸起破损的预热方法
CN201770785U (zh) * 2010-06-29 2011-03-23 云南云铝润鑫铝业有限公司 电加热焙烧预热电解槽

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101629304A (zh) * 2008-07-17 2010-01-20 沈阳铝镁设计研究院 一种预焙阳极铝电解槽焦粒焙烧启动方法及结构
CN101709484A (zh) * 2009-12-18 2010-05-19 中国铝业股份有限公司 一种惰性阳极铝电解槽的预热启动方法
CN201762461U (zh) * 2010-06-13 2011-03-16 中国铝业股份有限公司 一种惰性阳极铝电解槽的预热启动设备
CN102234819A (zh) * 2011-08-04 2011-11-09 中国铝业股份有限公司 一种铝电解槽的预热启动方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021232147A1 (fr) * 2020-05-01 2021-11-25 Elysis Limited Partnership Système et procédé de démarrage d'une cellule électrolytique

Also Published As

Publication number Publication date
CN102234819B (zh) 2013-02-13
CN102234819A (zh) 2011-11-09

Similar Documents

Publication Publication Date Title
WO2013016929A1 (fr) Procédé de démarrage du préchauffage d'une cellule d'électrolyse en aluminium
CN205062204U (zh) 一种电解炉
CN104818499A (zh) 一种电解炉组
CN105088284A (zh) 一种电解炉
CN108193235A (zh) 一种稀土电解槽电极结构及稀土电解槽
CA2003660C (fr) Depot par sursaturation du revetement sur les cathodes d'extraction electrolytique mouillables par l'aluminium obtenu
CN104141150A (zh) 以离子液体和氯化铝为电解质低温电解制取铝的方法
US4247381A (en) Facility for conducting electrical power to electrodes
CN101709484B (zh) 一种惰性阳极铝电解槽的预热启动方法
CN204661841U (zh) 一种电解炉组
NO347857B1 (no) Likestrøm shunt forvarmingsstartmetode for en inert elektrode aluminium elektrolysecelle
CN207596976U (zh) 一种稀土氧化物熔盐电解槽
CN103993332B (zh) 一种节能铝电解槽及其辅助极
CN107779912A (zh) 一种稀土氧化物熔盐电解槽
CN101353805B (zh) 铝电解槽火焰-铝液二段焙烧方法
CN103088366B (zh) 一种铝电解高效节能热流焦粒焙烧启动方法
CN201952499U (zh) 设置有加热装置的铝电解槽
CN202730257U (zh) 一种惰性电极铝电解槽的预热启动装置
CN207828425U (zh) 氮化硅结合炭块复合铝用侧部炭块
RU2449059C2 (ru) Электролизер для производства алюминия
CN2641061Y (zh) 一种铝电解槽固体铝焙烧装置
US20230175156A1 (en) System and process for starting up an electrolytic cell
CN2416112Y (zh) 一种预焙阳极铝电解槽焙烧装置
CN1936086A (zh) 电解铝生产工艺及熔铝电解槽
CN116555836A (zh) 一种使用独立交流电源预热启动垂直惰性电极结构铝电解槽的方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11870378

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11870378

Country of ref document: EP

Kind code of ref document: A1