OPERATING EFFICIENCY OF THE PASTE TRANSPORTING HYDROSYSTEMS ENSURED BY LABORATORY ESTIMATED RHEOLOGICAL PARAMETERS

UDC 622.648.01

Authors:

Kirichko S.N, Doctoral Student

(IGTM NAS of Ukraine)

Abstract.

Subject of the research was simulation of pasty-pulp pressure flowing out from the pipeline when the pulp is forced out from the cylinder by a piston. Purpose of the research was to elaborate a method for estimating rheological parameters of the paste produced of cleaning rejects in the concrete ore-dressing and processing enterprise and, with the help of this method, to estimate dependence between hydraulic gradient and rate of the pulp velocity and concentration in the laboratory conditions. The paper describes a mathematical model of the process, a test bench for laboratory research, processing procedure and experimental results for the pastes produced from iron ore cleaning rejects at the Central Ore-Dressing and Processing Enterprise. The tests showed that rheological characteristic of these pastes was described by Bіngham-Shvedov law. For this law, dependences of initial shear stress and structural viscosity on the pulp concentration were first ever obtained.

Keywords:

pulp with paste concentration, Bіngham-Shvedov law.

References:

1. Avksentev, S.Yu. (2009), «Definition of rational modes hydrotransport paste tailings copper-zinc ore», Ph.D. Thesis, 05.15.06, St. Petersburg, RU.

2. Aleksandrov, V.I. (2000) Metodyi snizheniya energozatrat pri gidravlicheskom transportirovanii smesey vyisokoy kontsentratsii [Methods of reducing energy consumption in hydraulic transportation of mixtures of high concentration], SPGGI (TU), St. Petersburg, Russia.

3. Voronov, V.A. (2007), «Reduction of energy consumption hydrotransportation tailings mining enterprises to optimize operation of groundwater pumps and gravity thickeners», Ph.D. Thesis, 05.05.06, St. Petersburg, RU.

4. Golovachev, N.V. (2010), «Rationale for maintenance and repair of equipment to improve the operational efficiency of the system hydraulic transport in mines», Ph.D. Thesis, 05.05.06, St. Petersburg, RU.

5. Krill, S.I., Karasik, V.M., Vitoshkin, Yu.K. and Ocheretko, V.F. (1983), «Influence of small fractions of a polydisperse firm material on parameters of its transportation by a turbulent stream», Conference works. Institute of hydrodynamics of ChSSR, Praha, CSSR, pp. 88-90.

6. Dmitriev, G.P., Maharadze, L.I. and Gochitashvili, T.Sh. (1991), Napornyue gidrotransportnyue sistemy [Pressure head hydrotransport systems], Nedra, Moscow, Russia.

7. Dokukin,V.P. (2005), Povyushenie effektivnosti ekspluatatsii system truboprovodnogo gidrotransporta, [Increase of efficiency of operation of systems of pipeline hydrotransport], SPGGI(TU), St. Petersburg, Russia.

8. Kanenkov, V.V. (2006) «Reduction of energy consumption of hydraulic transportation polydisperse slurries of Mining», 05.05.06, Ph.D. Thesis, St. Petersburg, RU.

9. Kirichko, S.N. (2012) “Calculation of parameters hydrotransport highly slurries under enterprises Kryvbass”, Geo-Technical Mechanics, no 103, pp. 101 – 106.

10. Manuel, V.A. (2006) «Justification technological scheme and complex parameters for transporting highly concentrated slurry on laterite quarries», Ph.D. Thesis, 05.05.06, St. Petersburg, RU.

About the author:

KirichkoSergeyNikolayevich, Doctoral Student, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dniepropetrovsk, Ukraine, Ця електронна адреса захищена від спам-ботів. вам потрібно увімкнути JavaScript, щоб побачити її.