Effective parameters of tail processing gold-bearing ore hydrotransport for verninskaya processing factory

• Autorzy: Alexandrov Victor I. , Maharatkin Pavel N. , Trufanova Inna S.

Identyfikatory

DOI

10.29119/1641-3466.2020.145.1

• Języki publikacji: EN

Abstrakty

EN

Purpose: The paper shows that in order to increase the efficiency of hydraulic transport systems in mining a transition to the transportation of slurries with a high concentration of solids in the slurry flow is necessary. Design/methodology/approach: The aim of the research is to determine the optimal concentrations to ensure effectiveness of thickened tailings hydrotransport using the example of the Verninskaya processing factory, taking into account the maximum possible concentration of the solid phase and the rheological properties of the pulp. Findings: Experimental studies have shown that slurry tailings of gold-containing ore with mass concentrations of more than 55% are viscoplastic fluids. Experiments on a rotational viscometer allowed us to establish the main rheological characteristics of the studied slurries — shear stress and the dynamic effective viscosity. It has been established that over the entire range of concentrations from 55 to 65%, the flow of slurries is described by the Bingham rheological equation. Experimental studies of hydraulic transport performed on a laboratory setup with a pipeline diameter of 50 mm confirmed the results obtained on a rotational viscometer. Curves of mixture stream are inclined straight lines that cut off on the axis of head of the sections, which determine the initial hydraulic slope corresponding to the yield shear stress on the rheological curves. Originality/value: According to the results of the experiments, a method has been developed for calculating the hydraulic transport of high concentrated slurries of tailings of gold-bearing ore. Calculations showed that in a given range of performance of hydrotransport system and the mass concentration of the solid phase pressure losses vary from 11 to 84 m water column/m. Head loss values grow with increasing concentration. A sharp increase in head loss occurs in the concentration range from 60 to 65% and above.

Słowa kluczowe

EN

hydrotransport; solid particles; concentration; shear stress; viscosity; head losses

PL

hydrotransport; cząstki stałe; stężenie; naprężenie ścinające; lepkość; straty ciśnienia

• Wydawca: Wydawnictwo Politechniki Śląskiej
• Czasopismo: Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
• Rocznik: 2020
• Tom: z. 145
• Strony: 9--21
• Opis fizyczny: Bibliogr. 10 poz.

Twórcy

autor

Alexandrov Victor I.

• Mining Transport Machines Department. Saint-Petersburg Mining University, Russia

autor

Maharatkin Pavel N.

• Mining Transport Machines Department. Saint-Petersburg Mining University, Russia

autor

Trufanova Inna S.

• Mining Transport Machines Department. Saint-Petersburg Mining University, Russia

Bibliografia

• 1. Aleksandrov, V.I., Avksentyev, S.Yu., Gorelkin, I.M. (2012). Obogashchenie Rud. Mineral Processing, 3, 39-42.
• 2. Aleksandrov, V.I., Vasylieva, M.A. (2015). Reports of the XXIII Int. Sci. Symp., Miner’s week, 452-460.
• 3. Alexandrov, V.I. (2000). Metody snizhenia energozatrat pri gidravlichtskom transportirovanii smesei vysokoi koncentracii. Saint-Petersburg, SPGMI (TU), 117.
• 4. Alexandrov, V., Ivanov, S., Asatur, K., Demijanov, S. (2015). The rheological properties of high concentration slurry at pipeline transportation on example of copper-nickel ore tailings. 14th International Conference on Transport and Sedimentation of Solid Particles, 23-27 June, Saint Petersburg, Russia, 23-32.
• 5. Avksentiev, S.Yu., Serzhan, S.L., Trufanova, I.S. (2018). GIAB S11, 3-14, DOI: 10.25018/0236-1493-2018-4-11-3-14.
• 6. Darcy, H. (1857). Malet-Bachelier.
• 7. Debray, F., Franc, J.P., Maitre T., Reynaud. S. (2001). Mec. Ind. 2, 443-454.
• 8. Heywood, N., Richardson, J. (1978). Proc. Hydrotransport, 5 C1, 146-152.
• 9. Kumar, U., Singh, S.N., Seshadri, V. (2015). Int. J. of Engineering and Technical Research (IJETR), 3(4), 394-397.
• 10. Paterson, A.J.C. (2004). High density slurry and paste tailings, transport systems. International Platinum Conference ‘Platinum Adding Value’. The South African Institute of Mining and Metallurgy, 45-56.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).