Skip to main content
SpringerLink
Log in

Effect of working condition on thermal stress of NiFe2O4-based cermet inert anode in aluminum electrolysis

  • Published:
Journal of Central South University of Technology Aims and scope Submit manuscript

Abstract

Based on the FEA software ANSYS, a model was developed to simulate the thermal stress distribution of inert anode. In order to reduce its thermal stress, the effect of some parameters on thermal stress distribution was investigated, including the temperature of electrolyte, the current, the anode cathode distance, the anode immersion depth, the surrounding temperature and the convection coefficient between anode and circumstance. The results show that there exists a large axial tensile stress near the tangent interface between the anode and bath, which is the major cause of anode breaking. Increasing the temperature of electrolyte or the anode immersion depth will deteriorate the stress distribution of inert anode. When the bath temperature increases from 750 to 970 °C, the maximal value and absolute minimal value of the 1st principal stress increase by 29.7% and 29.6%, respectively. When the anode immersion depth is changed from 1 to 10 cm, the maximal value and absolute minimal value of the 1st principal stress increase by 52.1% and 65.0%, respectively. The effects of other parameters on stress distribution are not significant.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. LIU Ye-xiang. Advance on the research and development of inert anode and wettable cathode in the aluminum electrolysis[J]. Light Metals, 2001(5): 26–29. (in Chinese)

  2. PAWLEK R P. Inert anodes: An update[C]// SCHNEIDER W. Light Metals. Warrendale: TMS, 2002: 449–456.

    Google Scholar 

  3. de NORA V. Aluminium electrowinning—The future[J]. Aluminium, 2000, 76(12): 998–999.

    Google Scholar 

  4. ZHOU Wei-ming, GUO Zhong-cheng. Present status of materials of inert anode for electrolysising aluminium[J]. Metallurgical Collections, 2004 (1): 1–3. (in Chinese)

  5. CHEN Xi-ping, LIU Feng-qin. Present studying situation of inert anodes in aluminum electrolysis cells[J]. Nonferrous Metals (Extractive Metallurgy), 2002 (4): 23–26. (in Chinese)

  6. WU Xian-xi. Conditions of investigation on the inert anodes in aluminium electrolysis[J]. Light Metals, 2000(1): 41–43. (in Chinese)

  7. ZHANG Lei, ZHOU Ke-chao, LI Zhi-you, et al. Effect of atmosphere on densification in sintering nickel ferrite ceramic for aluminum electrolysis[J]. The Chinese Journal of Nonferrous Metals, 2004, 14(6): 1002–1006. (in Chinese)

    Google Scholar 

  8. ZHANG Gang, LAI Yan-qing, TIAN Zhong-liang, et al. Preparation of nickel ferrite based cermets for aluminum electrolysis[J]. Journal of Materials Science & Engineering, 2003, 21(4): 510–513. (in Chinese)

    Google Scholar 

  9. TIAN Zhong-liang, LAI Yan-qing, ZHANG Gang, et al. Preparation of NiFe2O4-Cu based cermet inert anodes in aluminum electrolysis[J]. The Chinese Journal of Nonferrous Metals, 2003, 13(6): 1540–1545. (in Chinese)

    Google Scholar 

  10. JIAO Wan-li, ZHANG Lei, YAO Guang-chun, et al. Sintering process of NiFe2O4 spinel with and without TiO2 adding[J]. Journal of the Chinese Ceramic Society, 2004, 32(9): 1150–1153. (in Chinese)

    Google Scholar 

  11. LAI Yan-qing, LI Jie, TIAN Zhong-liang, et al. On the corrosion behaviour of NiFe2O4-NiO based cermets as inert anodes in aluminum electrolysis[C]// McNeil J. Light Metals. Warrendale: TMS, 2006: 495–500.

    Google Scholar 

  12. ZHANG Xiao-yong, ZHOU Ke-chao, LI Zhi-you, et al. Design for the relax of thermal stress in the surface of 2-D functionally graded model[J]. Journal of Materials Science and Engineering, 2003, 21(5): 697–702. (in Chinese)

    Google Scholar 

  13. LI J, ZHANG Q S, LAI Y Q, et al. Thermal stresses relaxation design of Ni/NiFe2O4 system functionally graded cermet inert anode[J]. Acta Metallurgica Sinica, 2005, 18(5): 635–641.

    Google Scholar 

  14. WEYAND J D, DEYOUNG D H, RAY S P, et al. Inert Anodes for Aluminum Smelting[R]. Washington D C: Aluminum Company of America, 1986.

    Google Scholar 

  15. WANG Bao-lin, HAN Jie-cai, ZHANG Xing-hong. Uneven Material Mechanics[M]. Beijing: Science Press. 2003. (in Chinese)

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. School of Metallurgical Science and Engineering, Central South University, Changsha, 410083, China

    Li Jie  (李 劼), Wang Zhi-gang Doctoral candidate  (王志刚), Lai Yan-qing  (赖延清), Liu Wei  (刘 伟) & Ye Shao-long  (叶绍龙)

Authors
  1. Li Jie  (李 劼)
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Wang Zhi-gang Doctoral candidate  (王志刚)
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Lai Yan-qing  (赖延清)
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Liu Wei  (刘 伟)
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Ye Shao-long  (叶绍龙)
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Wang Zhi-gang Doctoral candidate  (王志刚).

Additional information

Foundation item: Project (2005CB623703) supported by the National Basic Research and Development Program of China; Project (50474051) supported by the National Natural Science Foundation of China

Rights and permissions

Reprints and permissions

About this article

Cite this article

Li, J., Wang, Zg., Lai, Yq. et al. Effect of working condition on thermal stress of NiFe2O4-based cermet inert anode in aluminum electrolysis. J Cent. South Univ. Technol. 14, 479–484 (2007). https://doi.org/10.1007/s11771-007-0093-1

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11771-007-0093-1

Key words

Search

Navigation