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ORE PREPARATION
ArticleName Upon ball mill combination liner design
DOI 10.17580/or.2017.03.02
ArticleAuthor Malyarov P. V.
ArticleAuthorData

OOO «Resurs» (Stavropol, Russia):

Malyarov P. V., Director, Doctor of Engineering Sciences, petrmalyarov@gmail.com

Abstract

The work is dedicated to the choice of ball mill drum’s combination rubber-metal liners’ ratio of sizes. Damage mechanisms were analyzed with respect to liner plates from different materials. Steel liners are subject to abrasive wear caused by load material interaction with liners under sliding conditions and to contact wear of surfaces, where balls impacts upon liners occur without sliding. Rubber liners are subject to fatigue abrasive wear under the conditions of secondary and subsequent grinding stages. Under the conditions of primary grinding stage forces of load interaction with liners are greater, than rubber tear resistance. Application of combination rubber-metal liners permits to decrease balls impacts’ contact interaction with liner metal inserts through liner structural damping effect. Combination rubbermetal liner profile permits to entrain external layer of load material into upward trajectories without sliding. Liner’s inoperative rear surfaces exactly follow the trajectories of balls relative motion prior to impact with liner, and liner’s working surfaces are orthogonal to rear surfaces. In such a case contact stress and wear of metal inserts are decreased, attributable to the fact that liner’s working surfaces are metal inserts. Metal inserts may be made of manganese steel or abrasion-resistant cast iron. Character of balls interaction with liners from different materials was studied by means of software program ABAQUS, based on the finite element methods. The choice of metal inserts and rubber matrix mass relation shall provide for thorough material grinding between ball charge external layer and liner. Force, required for disintegration of maximum size lumps in load material, is proposed to be determined with the help of drop-weight method tester.

keywords Mill, liner, grinding bodies, metal inserts, rubber, disintegration, stray iron, constructional materials, design, wear, simulation
References

1. Pivnyak G. G., Vaisberg L. A., Kirichenko V. I., Pilov P. I., Kirichenko V. V. Comminution. Power engineering and technology (a manual for high schools). Moscow: Publishing house «Ruda i Metally», 2007. 296 p.
2. Sabih A., Radziszewski P., Mullany I. Investigating grinding media differences in microstructure, hardness, abrasion and fracture toughness. Minerals Engineering. 2017. Vol. 103–104. pp. 43–53. DOI: 10.1016/j.mineng.2016.08.014.
3. Boemer D., Ponthot J.-P. A generic wear prediction procedure based on the discrete element method for ball mill liners in the cement industry. Minerals Engineering. 2017. Vol. 109. pp. 55–79. DOI: 10.1016/j.mineng.2017.02.014.
4. Eriksson K.-G., Marklund G., Grebeneshnikov A. L., Fishchev V. Yu. Development of mill lining systems. Gornaya Promyshlennost. 2003. No. 1. pp. 24–32.
5. Romanov A. P., Kolosay G. B., Ermakov D. V., Koltunov A. V. Combined rubber-metal lining of Metso Minerals in a wet SAG mill at a gold extraction plant of GOK «Kubaka». Gornaya Promyshlennost. 2004. No. 3. pp. 49–53.
6. Malyarov P. V., Stepurin V. F., Ivanov V. A., Baskaev P. M., Tsallagov V. U., Ismagilov R. I. Experience in the application of cell lining of drum mills in the conditions of the Polar Division of MMC Norilsk Nickel. Tsvetnye Metally. 2007. No. 6. pp. 6–10.
7. Kornienko Ya. P., Malyarov P. V., Maslakov A. G., Penkin N. S. On the issue of rational profiling lining armor of ball mills. Obogashchenie Rud. 1984. No. 5. pp. 28–32.
8. Fish J., Belytschko T. A first course in finite elements. JohnWiley & Sons, Ltd, 2007. p. 313.
9. Vaysberg L. A., Katsman Ya. M., Ilyin L. I. The finite element method in the dynamic and strength calculation of vibrating screens. Obogashchenie Rud. 1980. No. 1. pp. 24–28.
10. Abaqus 6.9 Documentation. URL: http://abaqusdoc.ucalgary.ca/v6.9/ (accessed: 30.05.2017).
11. Chizhik E. F., Gerasimenko I. I., Molchanova E. A. On the concept of shock-wave destruction of drum mills lining. Proc. of the Intern. Conf. «Resource-saving and Environmental Protection in Beneficiation and Mineral Processing» (the Plaksin’s Readings – 2016). St. Petersburg, 2016. pp. 31–34.
12. Dyrda V. I., Markelov F. E., Evenko S. L. Dynamics of the drum mills in the context of the intra-mill load turbulent movement. VIII Congress of the CIS countries mineral processors. Moscow, 2011. Vol. 1. pp. 279–282.
13. Malyarov P. V. Basics of ore preparation processes intensification. Rostov-na-Donu: Rosizdat, 2004. 314 p.
14. Soda R., Sato A., Kano J., Saito F. Development of prediction method of wear rate during wet stirred milling by using DEM. Journal of the Society of Powder Technology, Japan. 2014. Vol. 51, No. 6. pp. 436–443. DOI: 10.4164/sptj.51.436.
15. Andreev Ye. Ye., Zakhvatkin V. V., Lvov V. V., Nikolaeva N. V. Application of falling weight test for estimation of ore strength properties. Obogashchenie Rud. 2012. No. 3. pp. 19–23.
16. JKSimMet. Version 6.0. User Manual. URL: https://ru.scribd.com/doc/254470402/Jksimmet-v6-Manua (accessed: 5.04.2017).

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