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Journal of Failure Analysis and Prevention

, Volume 17, Issue 2, pp 340–348 | Cite as

Wear and Failure Analysis of Semi-Autogenous Grinding Mill Liners

  • Roozbeh Eshghian
  • Majid Abbasi
Technical Article---Peer-Reviewed

Abstract

The wear and failure analysis of shell liners of a grinding mill is investigated. Metallurgical and tribological studies were conducted on the worn liner of a semi-autogenous grinding mill in Chadormalu Industrial Complex. The chemical analysis, wear mechanism, microstructural variations and mechanical properties in different sections of the worn liner were evaluated using visual inspection, optical and scanning electron microscopes and hardness measurements. Chemical analyses indicated that the shell linear is hypereutectoid low-alloy chromium steel. According to visual inspection, it was observed that the maximum weight loss happened in the lifter zone where the grinding mill charge is thrown on. In addition, the microstructure and hardness of the lifter of liner from the initial surface to interior depth have meaningful differences that can intensify the wear rate. The main microstructure at the initial working surface consisted of tempered martensite with noticeable content of retained austenite with hardness more than 47 HRC. The well-worn surfaces had coarse pearlitic features with cementite networks at the prior austenite grain boundaries with 29 HRC hardness. It was concluded that both the retained austenite in martensitic matrix and cementite networks in coarse pearlite decreased wear resistance severely. For improvement of wear behavior of the casting, lowering the carbon and chromium contents and applying proper heat treatment cycle to obtain a fully pearlitic microstructure with 34–40 HRC are recommended.

Keywords

Grinding mill liner Wear mechanism Failure analysis Pearlite Retained austenite Heat treatment 

Notes

Acknowledgments

The authors would like to thank financial support of Tabarestan Steel Foundry Company (TSF) and Babol Noshirvani University of Technology.

References

  1. 1.
    A. Gupta, D.S. Yan, Mineral Processing Design and Operation (Elsevier, Amsterdam, 2006)Google Scholar
  2. 2.
    S. Banisi, M. Hadizadeh, H. Mahmoudabadi, A. Eilkhany, SAG Mill Liner Wear and Breakage at the New Concentration Plant of the Sarcheshmeh Copper Complex (University of British Columbia, Vancouver, 2006)Google Scholar
  3. 3.
    J.A. Hawk, R.D. Wilson, Modern Tribology Handbook, Chapter 35: Tribology of Earthmoving, Mining and Minerals Processing (CRC Press, USA, 2001)Google Scholar
  4. 4.
    T.W. Chenje, D.J. Simbi, E. Navara, Relationship between microstructure, hardness, impact toughness and wear performance of selected grinding media for mineral ore milling operations. Mater. Des. 25, 11–18 (2004)CrossRefGoogle Scholar
  5. 5.
    I. Sevim, I. Eryurek, Effect of fracture toughness on abrasive wear resistance of steels. Mater. Des. 27, 911–919 (2006)CrossRefGoogle Scholar
  6. 6.
    Y. Wang, T. Lei, Wear behavior of steel 1080 with different microstructures during dry sliding. Wear 194, 4–53 (1996)CrossRefGoogle Scholar
  7. 7.
    G.J. Gore, J.D. Gates, Effect of hardness on three very different forms of wear. Wear 203–204, 544–563 (1997)CrossRefGoogle Scholar
  8. 8.
    M.A. Moore, The relationship between the abrasive wear resistance, hardness and microstructure of ferritic materials. Wear 28, 59–68 (1974)CrossRefGoogle Scholar
  9. 9.
    G.K. Nathan, W.J.D. Joxes, The empirical relationship between abrasive wear and the applied condition. Wear 9, 300–309 (1966)CrossRefGoogle Scholar
  10. 10.
    G.W. Stachowiak, Wear, Materials, Mechanisms and Practice (Wiley, England, 2005)CrossRefGoogle Scholar
  11. 11.
    A. Shafiee, M. Nili-Ahmadabadi, H.M. Ghasemi, E. Hossein-Mirzaei, Wear behavior of a Cr–Mo steel with different microstructures, in comparison with austempered ductile iron (ADI). Int. J. Mater. Form. 2(1), 237–241 (2009)CrossRefGoogle Scholar
  12. 12.
    M. Yahyaei, S. Banisi, M. Hadizadeh, Modification of SAG mill liner shape based on 3-D liner wear profile measurements. Int. J. Miner. Process. 91, 111–115 (2009)CrossRefGoogle Scholar
  13. 13.
    C. Aldrich, Consumption of steel grinding media in mills—a review. Miner. Eng. 49, 77–91 (2013)CrossRefGoogle Scholar
  14. 14.
    M.S. Powell, The effect of liner design on the motion of the outer grinding elements in a rotary mill. Int. J. Miner. Process. 31, 163–193 (1991)CrossRefGoogle Scholar
  15. 15.
    M. Powell, I. Smit, P. Radziszewski, P. Cleary, B. Rattray, K.G. Eriksson, L. Schaeffer, The selection and design of mill liners (Society for Mining, Metallurgy, and Exploration, Inc., Englewood, 2006), pp. 331–376Google Scholar
  16. 16.
    F. Katsuki, M. Yonemura, Subsurface characteristics of an abraded Fe-0.4 wt.% C pearlitic steel: a nanoindentation study. Wear 263, 1575–1578 (2007)CrossRefGoogle Scholar
  17. 17.
    M.H. Shaeri, H. Saghafian, S.G. Shabestari, Effects of austempering and martempering processes on amount of retained austenite in Cr–Mo steels (FMU226) used in mill liner. J. Iron Steel 17, 53–58 (2010)CrossRefGoogle Scholar
  18. 18.
    M.H. Shaeri, H. Saghafian, S.G. Shabestari, Effects of heat treatment on microstructure and mechanical properties of Cr–Mo steels (FMU226) used in mill liner. Mater. Des. 34, 53–58 (2012)CrossRefGoogle Scholar
  19. 19.
    D. Royston, Semi-autogenous grinding (SAG) mill liner design and development. Miner. Metall. Process. 24, 121–132 (2007)Google Scholar
  20. 20.
    A.M. Elwazri, P. Wanjara, S. Yuea, The effect of microstructural characteristics of pearlite on the mechanical properties of hypereutectoid steel. Mater. Sci. Eng. A 404, 91–98 (2005)CrossRefGoogle Scholar
  21. 21.
    H. Chandler, Heat Treater’s Guide: Practices and Procedures for Irons and Steels, 2nd edn. (ASM International, USA, 1995)Google Scholar
  22. 22.
    O.P. Modi, D.P. Mondal, B.K. Prasad, M. Singh, H.K. Khaira, Abrasive wear behaviour of a high carbon steel: effects of microstructure and experimental parameters and correlation with mechanical properties. Mater. Sci. Eng. A 343, 235–242 (2003)CrossRefGoogle Scholar
  23. 23.
    E.M. Taleff, J.J. Lewandowski, B. Pourladian, Microstructure-property relationships in pearlitic eutectoid and hypereutectoid carbon steels. JOM 54(7), 25–30 (2002)CrossRefGoogle Scholar
  24. 24.
    S.K. Tewari, R.C. Sharma, The effect of alloying elements on pearlite growth. Metall. Trans. A 16(4), 597–603 (1985)CrossRefGoogle Scholar
  25. 25.
    Y.Y. Yang, H.S. Fang, W.G. Huang, A study on wear resistance of the white layer. Tribol. Int. 29, 425–428 (1996)CrossRefGoogle Scholar
  26. 26.
    A.K. Gangopadhyay, J.J. Moore, Effect of impact on the grinding media and mill liner in a large semiautogenous mill. Wear 114, 249–260 (1987)CrossRefGoogle Scholar
  27. 27.
    Y. Wang, T. Lei, J. Liu, Tribo-metallographic behavior of high carbon steels in dry sliding: microstructure and Wear. Wear 231, 12–19 (1999)CrossRefGoogle Scholar
  28. 28.
    M. Abbasi, S.H. Kheirandish, Y. Kharrazi, J. Hejazi, On the comparison of the abrasive wear behavior of aluminum alloyed and standard Hadfield steels. Wear 268, 202–207 (2010)CrossRefGoogle Scholar
  29. 29.
    V.I. Izotov, M.E. Getmanova, A.A. Burzhanov, EYu. Kireeva, G.A. Filippov, Effect of the pearlitic steel structure on the mechanical properties and fracture upon loading by static bending. Phys. Metals Metallogr. 108(6), 606–615 (2009)CrossRefGoogle Scholar
  30. 30.
    A.R. Marder, B.L. Bramfitt, Effect of continuous cooling on the morphology and kinetics of pearlite. Metall. Trans. A 6(11), 2009–2014 (1975)CrossRefGoogle Scholar
  31. 31.
    A.V. Makarov, R.A. Savrai, V.M. Schastlivtsev, T.I. Tabatchikova, L.Y. Egorova, Mechanical properties and fracture upon static tension of the high-carbon steel with different types of pearlite structure. Phys. Metals Metallogr. 104, 522–534 (2007)CrossRefGoogle Scholar

Copyright information

© ASM International 2017

Authors and Affiliations

  1. 1.Babol Noshirvani University of TechnologyBabolIran
  2. 2.Department of Mechanical EngineeringBabol Noshirvani University of TechnologyBabolIran

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