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ArticleName Technical and economic indicators of a slurry tailings hydrotransport system when replacing steel slurry lines with polyurethane-coated slurry lines
DOI 10.17580/or.2021.01.04
ArticleAuthor Alexandrov V. I., Sharkovsky D. O., Ponomarev S. V.

St. Petersburg Mining University (Saint-Petersburg, Russia)

Aleksandrov V. I., Professor, Doctor of Engineering Sciences, Professor,


Andrei Varichev Mikhailovsky GOK (Zheleznogorsk, Russia):
Sharkovskiy D. O., Head of Technical Department,
Ponomarev S. V., Chief Hydraulic Engineer,


The hydrotransport system of Andrei Varichev Mikhailovsky GOK JSC used for iron ore processing tailings was studied with the aim of establishing its performance when using slurry pipelines with and without polyurethane coatings of their internal surfaces under mass concentration variations of 10 to 70 %. It has been established that the use of internal polyurethane coatings significantly reduces the specific head losses in hydraulic transportation of thickened slurry tailings for iron ore processing tailings. However, the technical and economic calculations performed failed to confirm the economic efficiency of their application for the slurry pipelines of the tailings facility hydrotransport system of Mikhailovsky GOK at any slurry thickening values, due to the significant payback period of capital investments caused by the relatively high current cost of polyurethanecoated pipelines. At the same time, a significant reduction (almost by a factor of four, provided that the current production volumes are maintained) in hydrotransport (energy) costs and maintenance costs of pressure slurry pipelines were identified for a transition to slurry tailings thickening to 50 % solids (excluding the capital and operating costs for the thickening system, reconstruction of the slurry pumping stations and additional measures for the distribution of a thicker slurry at the tailings storage facility). It is proposed to use the results obtained in the reconstruction of the slurry tailings hydrotransport system at the tailings facility of Mikhailovsky GOK with a conversion to hydraulic transportation of bulk concentration tailings thickened to 50 % in ∅820 mm slurry pipelines.

keywords Hydrotransport, hydraulic fluids of processing tailings, specific head losses, polyurethane coatings, economic efficiency, laboratory tests

1. Alexandrov V. I., Kopteva A. V., Serzan S. L. Effective parameters of tail processing of gold-bearing ore hydrotransport for Verninskaya processing factory. Key Engineering Materials. 2020. Vol. 836. pp. 25–35.
2. Alexandrov V. I., Vasilyeva M. F., Vasilyeva P. A. Effieciency of using polyurethane-lined pipes in hydrotransport systems of slurry tailings. Journal of Physics: Conference Series. 2018. Vol. 1118. 7 p. DOI: 10.1088/1742-6596/1118/1/012002.
3. Kalachev I. F. Reduction of pipeline wear by using protective coatings. Ekspozitsiya Neft' Gaz. 2011. No. 6. pp. 8–9.
4. Shvetsov M. V., Kalachev I. F. Improving technology coatings for steel pipes. Ekspozitsiya Neft' Gaz. 2014. No. 5. pp. 48–52.
5. Dumitskaya N. G., Sokolov A. A. Some features of the method of testing internal coatings of pipelines. Collection of articles of the XV International research competition. Penza: MTsNS «Nauka i Prosveshchenie», 2018. pp. 79–83.
6. Magerstaedt M., Raeth T., Lai L. K., Plourde D., Rosenbleck-Schmidt H. Ten fold life extension of hydrotransport and tailings lines by internal coatings. Corrosion 2016, March 6–10, 2016, Vancouver, British Columbia, Canada. Paper No. NACE-2016-7904.
7. Antoev K. P., Popov S. N., Zarovnyaev B. N. A study of promising polymer lining materials resistance to hydroabrasive effects. Izvestiya Tulskogo Gosudarstvennogo Universiteta. Nauki o Zemle. 2019. No. 1. pp. 185–191.
8. Pat. US6270847.
9. Zhang J., Zhang C., Madbou S. A. In situ polymerization of bio-based thermosetting polyurethane/graphene oxide nanocomposites. Journal of Applied Polymer Science. 2015. Vol. 132, Iss. 13. DOI: 10.1002/app.41751.
10. Haghdadeh P., Ghaffari M., Ramezanzadeh B., Bahlakeh G., Saeb M. R. The role of functionalized graphene oxide on the mechanical and anti-corrosion properties of polyurethane coating. Journal of the Taiwan Institute of Chemical Engineers. 2018. Vol. 86. pp. 199–212.
11. Xue F., Jia D., Li Y., Jing X. Facile preparation of a mechanically robust superhydrophobic acrylic polyurethane coating. Journal of Materials Chemistry A. 2015. Vol. 3, Iss. 26. pp. 13856–13863.
12. Anastas P. T., Hammond D. G. Inherent safety at chemical sites. Elsevier Science, 2015. 215 p.

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