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Vol 216
Pages:
38
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Design procedure of pressure losses for hydrotransport of the high concetration pulps

Authors:
V. I. Aleksandrov1
Pavel Vlasak2
About authors
  • 1 — National Mineral Resources University (Mining University)
  • 2 — The Institute of Hydrodynamics of the Academy of Sciences
Date submitted:
2014-12-20
Date accepted:
2015-02-13
Date published:
2015-06-01

Abstract

In the paper it is shown that application of standard design methods for hydrotransport used for slurry with small concentration of a solid phase and for hydrotransport of high concentration slurry leads to considerable divergences between practical values of pressure losses which are received as a result of calculation. A major factor, which defines errors of calculation of hydrotransport of slurry with high concentration of a solid phase by means of standard techniques, is that these techniques do not consider rheological characteristics and parameters substantially influencing the amount of spe-cific pressure losses. The offered model of a pulp movement and technique developed on the basis of this model allow to define hydrotransport parameters with a margin error no more than 0,1.

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References

  1. Александров В.И. Методы снижения энергоемкости в системах гидравлического транспорта гидросмесей высокой концентрации / СПГГИ(ТУ). СПб, 2000. 224 с.
  2. Александров В.И. Расчетная методика определения параметров напорного гидротранспорта хвостов обога-щения руд // Обогащение руд. 2009. № 4. С.39-41.
  3. Александров В.И. Минимизация энергозатрат при гидравлическом транспортировании пульпы / В.И.Александров, С.Ю.Авксентьев, И.М.Горелкин // Обогащение руд. 2012. № 3. С.39-42.
  4. Александров В.И. Энергоемкость гидравлического транспортирования крупнодисперсных и мелкодисперсных гидросмесей / В.И.Александров, П.Н.Махараткин, С.Ю.Авксентьев // Известия высших учебных заведений. Горный журнал. 2012. № 7. С.72-79.
  5. Thomas D.G. Transport characteristics of suspensions // Part VI – Minimum transport velocity for large particle size suspensions in round horizontal pipes. AIChE J. 1998.Vol.8. P.373-378.
  6. Gillies R.G., Hill K.B., McKibben M.J., Shook C.A. Solids transport by laminar Newtonian flows // Powder Tech-nology. 1999. Vol.104. P.269-277.

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