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FIELD EXPERIENCE
ArticleName About slurry pumps impellers service life at concentrating plants of ALROSA JSC
DOI 10.17580/or.2018.04.10
ArticleAuthor Ovchinnikov N. P.
ArticleAuthorData

North-Eastern Federal University in Yakutsk (Yakutsk, Russia):

Ovchinnikov N. P., Associate Professor, Candidate of Engineering Sciences, ovchinnlar1986@mail.ru

Abstract

Abrasive mineral slurries at the concentrating plants of ALROSA, a large diamond mining company, are pumped using Warman, KETO and Metso foreign centrifugal slurry pumps, as well as using domestic GrAT series pumps. The actual durability of basic parts (impellers and volutes) of the more expensive foreign slurry pumps, however, does not always necessarily exceed that of the domestic equipment. For example, impellers of GrAT 1800-67 slurry pumps at concentrating plant No. 12 (Udachninsky GOK) proved more durable than those of FAP50A-C pumps manufactured by KETO. In this regard, it may be assumed that impeller durability in any pumping equipment used for transferring abrasive slurries depends not only on the physical and mechanical properties of the material used in the pump design, but also on the characteristics of the slurry pumped. The research establishes the factors that influence the average service life of impellers in slurry pumps at the concentrating plants of ALROSA. A single-factor linear dependence is derived between the average service life of a slurry pump impeller and the weighted average grain size of mechanical impurities contained in the slurry pumped. Accounting for this dependence enables high-probability predictions of impeller durability in pumping equipment at the concentrating plants of ALROSA.

keywords Сoncentrating plant, slurry pumps, impeller, hydroabrasive wear, particle-size distribution, hydraulic parameters
References

1. Ovchinnikov N. P., Vikulov M. A. Analysis of «Metso» slurry pumps operation in conditions of hydrotransport of separation products (by the example of concentrator № 16). Gorny Informatsionno-Analiticheskiy Byulleten (nauchnoteknicheskii zhurnal). 2015. No. 12. pp. 73–75.
2. Aleksandrov V. I., Sobota I. Vibrodiagnostics of the technical state slurry pumps. Zapiski Gornogo Instituta. 2016. Vol. 218. pp. 242–250.
3. Povetkin V. V., Lem V. P. Hydroabrasive wear of soil and sand pumps. Vestnik Kazakhskogo Natsionalnogo Tekhnicheskogo Universiteta imeni K. I. Satpaeva. 2008. No. 6 (69). pp. 51–54.
4. Yoganandh J., Natarajan S., Kumaresh Babu S. P. Erosive wear behavior of high-alloy cast iron and duplex stainless steel under mining conditions. Journal of Materials and Perfomance. 2015. Vol. 24 (9). pp. 3588–3598.
5. Verichev S. N., Mishakin V. V., Nuzhdin N. A, Razov E. N. Experimental study of abrasive wear of structural materials under the high hydrostatic pressure. Ocean Engineering. 2015. Vol. 99. pp. 9–13.

6. Dandapat R., Deb A. A probability based model for the erosive wear of concrete by sediment bearing water. Wear. 2016. Vol. 350. pp. 166–181.
7. Kosmin V., Patsera S., Protsiv V. Analysis of reasons of insufficient wear resistance of pumps for waterjet mixes. Sovremennye Innovatsionnye Tekhnologii Podgotovki Inzhenernykh Kadrov dlya Gornoy Promyshlennosti i Transporta. 2015. No. 1 (2). pp. 83–89.
8. Kesler R. Considerations is selecting a positive displacement slurry pump. Mining World. 2016. Vol. 13 (4). pp. 34–37.
9. Kranzler T., Raimo Arola R. Improving pump materials for harsh environments. Sulzer Technical Review. 2013. Vol. 2. pp. 10–12.
10. Ostrovskij V. G., Pesherenko S. N. Calculations of the rate hydroabrasive wear interstage seal oil pump. Vestnik Permskogo Natsionalnogo Issledovatelskogo Politekhnicheskogo Universiteta. Geologiya. Neftegazovoye i Gornoye Delo. 2012. No. 5. pp. 70–75.
11. Wang W., Tse P. W. Prognostic of slurry pumps based on a moving-average wear degradation index and a general sequential Monte Carlo method. Mechanical Systems and Signal Processing. 2015. Vol. 56. pp. 213–229.
12. LLC «Technologies for surface modification». Metalceramic coatings. Engineering of metal-ceramic coatings made of tungsten carbides and chromium to protect against abrasive, erosion and water abrasion wear. URL: http://тем-по.рф/ru/%D0%BC%D0%B5%D1%82%D0%B0%D0%BB%D0%BB%D0%BE%D0%BA%D0%B5%D1%80%D0%B0%D0%BC%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B5-%D0%BF%D0%BE%D0%BA%D1%80%D1-%8B%D1%82%D0%B8%D1%8F (accessed: 15.07.2018).
13. Ovchinnikov N. P., Zyryanov I. V. Assessment of durability of sectional pumps in underground kimberlite mines of ALROSA. Gornyi Zhurnal. 2017. No. 10. pp. 41–44. DOI: 10.17580/gzh.2017.10.08.

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