CN1034027A - 活化性炭阳极 - Google Patents

活化性炭阳极 Download PDF

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Publication number
CN1034027A
CN1034027A CN88100103.1A CN88100103A CN1034027A CN 1034027 A CN1034027 A CN 1034027A CN 88100103 A CN88100103 A CN 88100103A CN 1034027 A CN1034027 A CN 1034027A
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China
Prior art keywords
carbon anode
electrolyting
active carbon
quilonum retard
anode
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CN88100103.1A
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CN1014911B (zh
Inventor
姚广春
邱竹贤
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Yan Wengong Feng Sufan
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Yan Wengong Feng Sufan
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Priority to CN88100103.1A priority Critical patent/CN1014911B/zh
Priority to US07/292,383 priority patent/US4885073A/en
Publication of CN1034027A publication Critical patent/CN1034027A/zh
Publication of CN1014911B publication Critical patent/CN1014911B/zh
Expired legal-status Critical Current

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    • 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
    • C25C3/12—Anodes
    • C25C3/125—Anodes based on carbon

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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)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

本发明为用于电解生产铝的一种阳极，将含0.4 ～1.5％的碳酸锂与沥青、焦炭混捏而制成，其特点是 与已有的炭阳极相比，阳极的过电压可降低150～ 200mV，从而生产每吨铝可节电300～600度。除此 而外，还可提高电解质的导电率。

Description

本发明属于电解生产铝的技术领域。
目前的电解工艺，是将氧化铝在冰晶石溶液中进行电解而生产铝，而所采用的阳极为炭素阳极。由于在电解过程中炭阳极与放电的氧离子反应迟缓，造成炭阳极的过电压高达400～600mV，占槽电压的9～14%。因此，现行的工艺因采用炭阳极所浪费的电能较多，因而设法降低阳极的过电压是解决此问题的关键。
鉴于上述情况本发明的目的在于改变现有的炭阳极成份，提供一种能降低阳极过电压的活化性炭阳极。
为实现上述目的本发明提供的一种活化性炭阳极，由含有0.4～1.5%的碳酸锂的炭质材料制成。具体为将0.4～1.5%碳酸锂加入到熔化的沥青中，经搅拌均匀后再与煅后焦炭混捏成炭糊，这样碳酸锂可均匀地分布在炭阳极的表面和内部。这种含碳酸锂的炭阳极在电解过程中具有较高的化学反应活性，能促使炭与氧离子间的化学反应速度加快，从而可降低阳极的过电压。因而碳酸锂的含量要在上述范围内取值，若碳酸锂的含量低于0.4%，则其催化效果不明显;若碳酸锂的含量高于1.5%，虽然具有一定的化学反应活性，但因其含量的增加促成电极的制造成本提高、电极的比电阻也随之增加。
本发明提供的活化性炭阳极与已有的纯炭阳极相比，可使阳极过电压降低150～200mV、槽电压比原来减少2.5～5%，从而生产每吨铝可节省电能300～600度。除此而外，由于活化性炭阳极中所含的碳酸锂在电解过程中溶解在电解质中，可使电解质的温度降低、提高电解质的导电率。
本发明的实施例之一：
自焙炭阳极中添加0.4%的碳酸锂，阳极过电压比原来降低150mV生产每吨铝可节省电能约400度。
本发明的实施例之二：
自焙炭阳极中添加1.5%的碳酸锂，阳极过电压比原来降低200mV生产每吨铝可节省电能约600度。

Claims (1)

  1. 用于电解生产铝领域的一种活化性炭阳极，其特征在于它是含有0.4～1.5%碳酸锂的炭质材料制成。
CN88100103.1A 1988-01-06 1988-01-06 铝电解用活性炭阳极材料 Expired CN1014911B (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN88100103.1A CN1014911B (zh) 1988-01-06 1988-01-06 铝电解用活性炭阳极材料
US07/292,383 US4885073A (en) 1988-01-06 1988-12-30 Activated carbon anode including lithium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN88100103.1A CN1014911B (zh) 1988-01-06 1988-01-06 铝电解用活性炭阳极材料

Publications (2)

Publication Number Publication Date
CN1034027A true CN1034027A (zh) 1989-07-19
CN1014911B CN1014911B (zh) 1991-11-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN88100103.1A Expired CN1014911B (zh) 1988-01-06 1988-01-06 铝电解用活性炭阳极材料

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US (1) US4885073A (zh)
CN (1) CN1014911B (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1985025B (zh) * 2004-06-22 2010-11-10 Cⅱ炭素有限责任公司 用于氧化铝到铝的熔盐电解的电极
CN112853401A (zh) * 2020-12-30 2021-05-28 江苏苏菱铝用阳极有限公司 一种抑制阳极内活性碱金属的预焙阳极

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5310476A (en) 1992-04-01 1994-05-10 Moltech Invent S.A. Application of refractory protective coatings, particularly on the surface of electrolytic cell components
US5651874A (en) 1993-05-28 1997-07-29 Moltech Invent S.A. Method for production of aluminum utilizing protected carbon-containing components
US6001236A (en) 1992-04-01 1999-12-14 Moltech Invent S.A. Application of refractory borides to protect carbon-containing components of aluminium production cells
US5397450A (en) * 1993-03-22 1995-03-14 Moltech Invent S.A. Carbon-based bodies in particular for use in aluminium production cells
DE69509540T2 (de) 1994-09-08 1999-09-30 Moltech Invent Sa Aluminium-elektrogewinnungszelle mit verbesserten kohlenstoff-kathodeblöcken
US5753163A (en) 1995-08-28 1998-05-19 Moltech. Invent S.A. Production of bodies of refractory borides
BR9900252A (pt) 1999-02-02 2000-08-29 Companhia Brasileira Carbureto Recipiente de aço inoxidável para a formação de eletrodos de autocozimento para a utilização em baixos-fornos elétricos de redução
BR9900253A (pt) 1999-02-02 2000-08-29 Companhia Brasileira Carbureto Recipiente de alumìnio e aço inoxidável a formação de eletrodos de autocozimento para a utilização em baixos-fornos elétricos de redução
CN116444273A (zh) * 2022-01-10 2023-07-18 山东圣泉新材料股份有限公司 树脂炭素阳极生坯及制备方法、生坯中间体及制备方法、炭素阳极及制备方法
CN115142093B (zh) * 2022-07-14 2024-01-30 湖南大学 一种预焙阳极抗氧化剂、其制备方法及应用

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4011374A (en) * 1975-12-02 1977-03-08 The United States Of America As Represented By The United States Energy Research And Development Administration Porous carbonaceous electrode structure and method for secondary electrochemical cell

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1985025B (zh) * 2004-06-22 2010-11-10 Cⅱ炭素有限责任公司 用于氧化铝到铝的熔盐电解的电极
CN112853401A (zh) * 2020-12-30 2021-05-28 江苏苏菱铝用阳极有限公司 一种抑制阳极内活性碱金属的预焙阳极

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Publication number Publication date
US4885073A (en) 1989-12-05
CN1014911B (zh) 1991-11-27

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