WO2008098488A1 - Structure d'extrémité latérale à conservation de chaleur pour cellule d'électrolyse d'aluminium - Google Patents

Structure d'extrémité latérale à conservation de chaleur pour cellule d'électrolyse d'aluminium Download PDF

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Publication number
WO2008098488A1
WO2008098488A1 PCT/CN2008/000335 CN2008000335W WO2008098488A1 WO 2008098488 A1 WO2008098488 A1 WO 2008098488A1 CN 2008000335 W CN2008000335 W CN 2008000335W WO 2008098488 A1 WO2008098488 A1 WO 2008098488A1
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WO
WIPO (PCT)
Prior art keywords
electrolytic cell
aluminum
anode
aluminum electrolytic
storage tank
Prior art date
Application number
PCT/CN2008/000335
Other languages
English (en)
French (fr)
Inventor
Xiaodong Yang
Yafeng Liu
Dongfang Zhou
Zhiyong Zou
Original Assignee
China Aluminium International Engineering Corporation Limited
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 China Aluminium International Engineering Corporation Limited filed Critical China Aluminium International Engineering Corporation Limited
Publication of WO2008098488A1 publication Critical patent/WO2008098488A1/zh

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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
    • 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
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
    • C25C3/085—Cell construction, e.g. bottoms, walls, cathodes characterised by its non electrically conducting heat insulating parts

Definitions

  • the invention relates to a heat preservation structure of an electrolytic cell, in particular to an end heat insulation structure of an aluminum electrolytic cell provided with an aluminum storage tank at an end.
  • the biggest advantage of an electrolytic cell with an aluminum storage tank at the end is energy saving.
  • the main energy-saving means is to reduce the pole pitch, reduce the tank voltage, reduce unnecessary heat loss, and improve power efficiency.
  • a large difference between the electrolytic cell with the aluminum storage tank at the end and the traditional electrolytic cell is that the production of aluminum-free liquid between the electrodes is realized, and the influence of the magnetic field on the production stability of the electrolytic cell is eliminated.
  • the technical problem to be solved by the present invention is to provide an end heat insulating structure of an aluminum electrolytic cell, which not only solves the problem of heat preservation of the upper portion of the aluminum storage tank, but also satisfies the requirements for aluminum exit at the end.
  • the present invention is achieved in the following manner: An end heat insulating structure of an aluminum electrolytic cell in which a non-conductive anode is suspended at an upper portion of an aluminum storage tank at an end of the electrolytic cell.
  • the anode is connected to the girders of the superstructure by a screw clamp.
  • the screw clamp is fixed on the bracket, and the bracket is directly welded to the beam of the upper structure.
  • the lower surface of the anode is higher than the liquid surface of the electrolyte in the aluminum storage tank.
  • the upper surface of the anode is covered with a layer of insulating material.
  • the anode is a carbon anode that is not electrically conductive itself.
  • the invention has the advantages and effects that it successfully solves the upper heat preservation of the aluminum storage tank at the end of the electrolytic cell, and at the same time ensures the integrity of the upper crust and prevents the covering material from falling into the storage.
  • the aluminum tank ensures the normal production of the electrolytic cell.
  • the invention utilizes the function of the anode group, has a simple structure and remarkable effect.
  • FIG. 1 is a front view showing the structure of an end heat insulating structure of an aluminum electrolytic cell of the present invention.
  • FIG. 2 is a side view showing the structure of the end heat insulating structure of the aluminum electrolytic cell of the present invention.
  • the structure of the present invention is as follows: A non-conductive anode 2 is suspended at the upper portion of the aluminum storage tank 1 at the end of the electrolytic cell 6, and the anode 2 is passed through a spiral clamping device similar to the other anode groups.
  • the screw clamp 3 is fixed to the bracket 7, and the bracket 7 is directly welded to the frame 4 of the superstructure.
  • the advantage of the screw clamp 3 is that the non-conductive anode 2 can be directly clamped by the multi-function crane.
  • the lower surface of the non-conductive anode 2 is higher than the liquid surface of the electrolyte in the aluminum storage tank 1.
  • the upper surface of the non-conductive anode 2 covers the insulating layer, and the insulating layer not only achieves the purpose of heat preservation, but also functions to prevent anodization. .
  • the anode 2 is a carbon anode that is not electrically conductive itself.
  • This application uses a carbon anode as a heat insulating member, and the carbon anode itself is not electrically conductive, so that the carbon anode does not participate in the electrolysis reaction and therefore is not consumed.
  • the carbon anode has good corrosion resistance to the molten liquid electrolyte in the electrolytic cell, and it is difficult to achieve common materials. Therefore, the non-conductive anode 2 of the present application has good corrosion resistance and thermal insulation, which is completely different from the prior art in which some anodes conduct electricity and participate in electrolytic reactions.

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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)

Description

铝电解槽的端部保温结构 技术领域
本发明涉及一种电解槽的保温结构，特别是涉及一种端部设有 蓄铝槽的铝电解槽端部保温结构。 背景技术
端部设有蓄铝槽的电解槽最大的优点就是节能，主要的节能手 段是降低极距， 降低槽电压， 减少无谓的热损失， 提高电能效率。 端部设有蓄铝槽的电解槽与传统电解槽的一个很大的区别就是实 现了极间无铝液生产， 消除了磁场对电解槽生产稳定性的影响。
由于电解槽的极距降低， 热收入减少， 并且蓄铝槽设置在一侧 端部， 所在位置没有电流， 本身不产生焦耳热， 唯一的热收入是 通过传导和对流获得的。 蓄铝槽端的加工面大大增加， 而且经常 出铝， 因此此处的上部结壳很难保持完整， 并且覆盖料很容易掉 入蓄铝槽内， 形成沉淀。 由于结壳的不完整性， 对热平衡的影响 很大， 电解槽的正常生产就会遭到破坏。 发明内容
本发明所要解决的技术问题是：提供一种铝电解槽的端部保温 结构， 它既解决了蓄铝槽上部保温的问题， 同时又满足了端部出 铝的要求。
本发明是这样实现的： 一种铝电解槽的端部保温结构， 在电解 槽的端部蓄铝槽的上部悬挂不导电的阳极。
所述的阳极通过螺旋夹具与上部结构的大梁连接。
所述的螺旋夹具固定在支架上，支架直接焊接在上部结构的大 梁上。
所述的阳极下表面高出蓄铝槽内电解质的液面。
所述的阳极上表面覆盖有保温料层。
所述的阳极为本身不导电的碳素阳极。
本发明的优点和效果是：它成功地解决了电解槽端部蓄铝槽的 上部保温， 同时保证了上部结壳的完整性， 防止了覆盖料掉入蓄 铝槽， 保证了电解槽的正常生产。 本发明运用了阳极组的作用， 结构简单， 效果显著。 附图说明
图 1是本发明铝电解槽端部保温结构的主视结构示意图。
图 2是本发明铝电解槽端部保温结构的侧视结构示意图。
图中， 1、 蓄铝槽； 2、 阳极； 3、 螺旋夹具； 4、 大梁； 5、 阳 极组； 6、 电解槽； 7、 支架。 具体实施方式
下面结合附图对本发明实施例进行详细说明，但本发明的保护 范围不受实施例所限。
如图 1和图 2所示， 本发明结构如下： 在电解槽 6的端部蓄铝 槽 1 的上部悬挂不导电的阳极 2 , 此阳极 2通过与其它阳极组 5― 样的螺旋加紧装置-螺旋夹具 3 将其固定在支架 7 , 支架 7直接焊 接在上部结构的大梁 4 上， 利用螺旋夹具 3 的优点是， 可以直接 利用多功能天车对此不导电阳极 2进行夹紧操作。此不导电阳极 2 的下表面高出蓄铝槽 1 内电解质的液面， 不导电阳极 2 的上表面 覆盖保温料层， 保温料层既达到了保温的目的， 又起到了防止阳 极氧化的作用。
特别地， 阳极 2为本身不导电的碳素阳极。 本申请采用碳素阳 极作为绝热部件， 而且碳素阳极本身不导电， 这样碳素阳极不参 与电解反应， 因此也不消耗。 同时， 碳素阳极对电解槽内熔融液 态电解质液有良好的抗侵蚀性， 而普通材料难以实现。 因此， 本 申请的不导电阳极 2 具有良好的抗侵蚀性和绝热性， 这与某些阳 极导电并参与电解反应的现有技术完全不同。

Claims

权 利 要 求
1. 一种铝电解槽的端部保温结构， 其特征是在电解槽 （6 ) 的 端部蓄铝槽 （ 1 ) 的上部悬挂不导电的阳极 （2 ) 。
2. 根据权利要求 1 所述的铝电解槽的端部保温结构， 其特征 是所述的阳极 （2 ) 通过螺旋夹具 （3 ) 与上部结构的大梁 （4 ) 连 接。
3. 根据权利要求 2 所述的铝电解槽的端部保温结构， 其特征 是所述的螺旋夹具 （3 ) 固定在支架 （ 7) 上， 支架 （7) 直接焊接 在上部结构的大梁 （4 ) 上。
4. 根据权利要求 1 或 2所述的铝电解槽的端部保温结构， 其 特征是所述的阳极 （2 ) 下表面高出蓄铝槽 （ 1 ) 内电解质的液面。
5. 根据权利要求 1 或 2所述的铝电解槽的端部保温结构， 其 特征是阳极 （2 ) 上表面覆盖有保温料层。
6. 根据权利要求 1 所述的铝电解槽的端部保温结构， 其特征 是阳极 （2 ) 为本身不导电的碳素阳极。
PCT/CN2008/000335 2007-02-13 2008-02-13 Structure d'extrémité latérale à conservation de chaleur pour cellule d'électrolyse d'aluminium WO2008098488A1 (fr)

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CN200710010402A CN101054689B (zh) 2007-02-13 2007-02-13 铝电解槽的端部保温结构
CN200710010402.X 2007-02-13

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101054689B (zh) * 2007-02-13 2010-05-19 沈阳铝镁设计研究院 铝电解槽的端部保温结构
CN102978660B (zh) * 2012-12-14 2015-02-18 郑州经纬科技实业有限公司 具保温结构的铝电解槽
CN103993332B (zh) * 2013-02-18 2017-03-15 王宇栋 一种节能铝电解槽及其辅助极
CN104514008B (zh) * 2013-09-28 2017-02-08 沈阳铝镁设计研究院有限公司 一种防止电解质液进入真空抬包的装置和方法
CN104862742B (zh) * 2015-05-15 2017-06-06 东北大学设计研究院（有限公司） 一种防止阳极氧化的铝电解槽结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1443253A (zh) * 2000-07-19 2003-09-17 阿尔科公司 金属生产用电解槽的绝热组件
WO2003102274A1 (en) * 2002-06-04 2003-12-11 Moltech Invent S.A. Aluminium electrowinning cell design with movable insulating cover sections
CN1696352A (zh) * 2004-05-13 2005-11-16 河南豫港龙泉铝业有限公司 一种不停槽进行修补电解槽侧部内衬的方法
WO2006088375A1 (en) * 2005-02-16 2006-08-24 Norsk Hydro Asa Method and means for control of heat balance
CN101054689A (zh) * 2007-02-13 2007-10-17 沈阳铝镁设计研究院 铝电解槽的端部保温结构

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1443253A (zh) * 2000-07-19 2003-09-17 阿尔科公司 金属生产用电解槽的绝热组件
WO2003102274A1 (en) * 2002-06-04 2003-12-11 Moltech Invent S.A. Aluminium electrowinning cell design with movable insulating cover sections
CN1696352A (zh) * 2004-05-13 2005-11-16 河南豫港龙泉铝业有限公司 一种不停槽进行修补电解槽侧部内衬的方法
WO2006088375A1 (en) * 2005-02-16 2006-08-24 Norsk Hydro Asa Method and means for control of heat balance
CN101054689A (zh) * 2007-02-13 2007-10-17 沈阳铝镁设计研究院 铝电解槽的端部保温结构

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CN101054689A (zh) 2007-10-17
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