Submit an Article
Become a reviewer
Vol 178
Pages:
64-68
Download volume:

Hydraulic coarseness of coal particles

Authors:
A. B. Nezametdinov
About authors
  • G.V. Plekhanov Saint Petersburg Mining Institute
Date submitted:
2007-11-13
Date accepted:
2008-01-01
Date published:
2008-05-01

Abstract

Having accounted coal particles after fragmentation on different equipment, particles in the form of needles, cubes, plates, blocks and pyramids were distinguished. After the analysis of the research to define the speed hindered falling of particles of different forms in water (hydraulic fineness) there have been proposed dependencies considering the density of the heterogeneous carrier phase, effective viscosity of water containing coal mud in different quantity, equivalent diameter for different forms of coal particles and the seeming density of dry coal at a specific ash content and average humidity.

Go to volume 178

References

  1. Агроскин А.А. Физические свойства углей. М.: Гос. научн.-технич. изд-во лит. по черной и цветной металлургии, 1961. 308 с.
  2. ГОСТ 2160-92 Топливо твердое минеральное, методы определения плотности. М.: Изд-во стандартов, 1992.
  3. Лонская М.П. К вопросу распределения влаги в антрацитах и каменных углях // Химия твердых топлив. 1937. Т.VIII. Вып.7. С.604-611.
  4. Лященко П.В. Гравитационные методы обогащения. М.: Недра, 1940.
  5. Незаметдинов А.Б. Особенности подготовки угля перед гидротранспортированием на дальние расстояния / А.Б.Незаметдинов, В.Г.Ластов // Обогащение руд. 2001.№ 6. 31-34 c.
  6. Самылин Н.А. Водовоздушное хозяйство углеобогатительных фабрик / Н.А.Самылин, В.С.Бутовецкий. М.: Недра, 1982. 197 с.
  7. Справочник по обогащению угля / И.С.Благов, А.М.Коткина, Л.С.Зарубин и др. М.: Недра, 1984. 614 с.
  8. Steinour H.H., Ind. Eng. Chem., 36, 618, 840, 901, 1944.
  9. Caus B.H. Proceedings of Symposim on Interaction between Fluids and Particles / B.H.Caus, R.P.Boardman // Inst. of Chem. Engrs, Lnd., 1962, p.17.

Similar articles

Design and calculation methodology of double-circuit vertical belt conveyor for mining industry
2008 Yu. D. Tarasov
Belt conveyor with a suspended belt on sliding supports
2008 K. A. Vasiliev, A. K. Nikolaev
Determination of safety degree of underwater crossings of gas-pipelines in difficult engineering-geological conditions
2008 O. I. Dzardanov
Control of loading of dump trucks
2008 M. A. Semenov, O. M. Bolshunova
Estimation of lubricating ability of oils of transmissions of mining machines
2008 A. A. Poddubnaya, A. S. Fokin, S. L. Ivanov, E. A. Kremcheev, V. S. Potapenko
Increase of reliability of machines and mechanisms operation in underground constructions of cryolithozone
2008 A. F. Galkin