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Numerical modeling of dense medium cyclones
2023A multiphase computational fluid dynamics model development for a dense medium cyclone (DMC) treating coal is presented in this chapter. Literature review indicates that the flow in DMCs is highly complex and requires a multiscale modeling strategy. The particle separation mechanism in the DMC is also not fully understood. The chapter discusses various
Teja Reddy Vakamalla +1 more
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Simulation and Performance Evaluation of Three Product Dense Medium Cyclone
International Journal of Coal Preparation and Utilization, 2022 Yusuf Enes Pural +2 more
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International Journal of Coal Preparation and Utilization, 2014
Dense medium cyclones are used extensively in the minerals processing industry around the world and cyclones with larger diameters have been introduced in recent years. Although cyclones have been in use for well over 60 years, the influence of the different process variables such as cyclone dimensions, feed pressure, medium properties and feed rates ...
G. J. de Korte, J. Engelbrecht
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Dense medium cyclones are used extensively in the minerals processing industry around the world and cyclones with larger diameters have been introduced in recent years. Although cyclones have been in use for well over 60 years, the influence of the different process variables such as cyclone dimensions, feed pressure, medium properties and feed rates ...
G. J. de Korte, J. Engelbrecht
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CFD Modeling of Dense Medium Cyclone
International Journal of Coal Preparation and Utilization, 2010A number of empirical models are in existence for the dense medium cyclone (DMC) and in recent years this subject has been broached with computational fluid dynamics (CFD). The dense medium presents a centrifugal field within the cyclone body. The coal particles separate in this field due to various forces acting on them.
Raj K. Rajamani +3 more
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Coal Preparation, 1995
The effect of medium composition on dense medium cyclone performance is investigated. It is found that a change in composition affects medium stability and rheology, and may lead to different responses in separation efficiency and cutpoint shift. The final result depends on whether the medium stability or rheology is the dominant factor, and also on ...
Y. B. HE, J. S. LASKOWSKI
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The effect of medium composition on dense medium cyclone performance is investigated. It is found that a change in composition affects medium stability and rheology, and may lead to different responses in separation efficiency and cutpoint shift. The final result depends on whether the medium stability or rheology is the dominant factor, and also on ...
Y. B. HE, J. S. LASKOWSKI
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Effect of Medium Composition on Dense Medium Cyclone Operation
International Journal of Coal Preparation and Utilization, 2014The importance of the amount of nonmagnetic material present in a medium to the stability of the medium and the subsequent density of separation has been the focus by the authors on a number of recent ACARP projects. A method for quantifying the composition of a medium in terms of magnetite, clay, fine coal, and small coal was demonstrated and, using a
Michael O'Brien +2 more
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Modelling of dense-medium cyclones treating coal
International Journal of Mineral Processing, 1986Abstract Experiments have been conducted on a 75-mm dense-medium cyclone treating coal in the size range −2.0 + 0.5 mm using magnetite as the medium under different design and operating conditions. The design variables studied were vortex finder diameter and spigot diameter and the operating variable was the specific gravity of the feed medium.
T.C. Rao, M. Vanangamudi, S.A. Sufiyan
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A laboratory study on dense-medium cycloning
Mining, Metallurgy & Exploration, 1989A laboratory study of dense-medium cycloning with Redstone seam coal has been conducted. The investigation was performed using a 203 mm (8 inch) Heyl-Patterson dense-medium cyclone. Two underflow orifices of 31.8 mm (1.25 inch) and 44.5 mm (1.75 inch) in diam were used.
Olufemi Olajide, Eung Ha Cho
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Dense Medium Cyclone Control – A Reconsideration
International Journal of Coal Preparation and Utilization, 2009The current process management and control of dense medium cyclones is based on the measurement of feed medium density and pressure. This paper considers the relationships between the controlling factors and the relative density of separation and Ep. These relationships have been developed from the analysis of over 20 data sets on modern large cyclones
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A Model of Dense Medium Cyclone Performance
Coal Preparation, 1993A mathematical model of the dense medium cyclone process has been developed by researchers at the JKMRC over a number of years. It has utilised empirical relationships between key performance criteria (such as cut point and Ep for the various size fractions) and cyclone geometry and operating parameters.
C. J. CLARKSON, C. J. WOOD
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