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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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Alternative Materials for Dense Medium Separations
International Journal of Coal Preparation and Utilization, 2009In response to concerns regarding cost and future supply of magnetite, a study has been performed to evaluate the potential of alternative materials that can be used to generate a dense medium for coal-cleaning applications. Alternative materials included waste steel slag, fine sand, and high-density material existing in run-of-mine feed. Under certain
R. Q. Honaker, C. Bimpong
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$��- ��'$ in a hot and dense medium
2003The behavior of $ $ and $ '$ in hot strange quark matter in weak equilibrium with temperature, is investigated within the SU(3) Nambu-Jona-Lasinio [NJL] model. Possible manifestations of restoration of symmetries, by temperature or density, in the behavior of $ $ and $ '$ are discussed.
Costa, Pedro +2 more
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Rayleigh scattering in a dense medium
The Journal of Chemical Physics, 1975The Rayleigh scattering by a dense medium composed of anisotropic units is calculated directly from Maxwell’s equations in a dielectric. The true scattered field is given by the fluctuations in the total effective field in the medium. A purely classical calculation gives the correct dependence of the scattered intensity on the refractive index of the ...
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Pressure drop in dense-medium cyclones
International Journal of Mineral Processing, 1986An experimental study has been made of the pressure drop characteristics of densemedium cyclones. The validity of a correlation developed by dimensional reasoning has been confirmed by experiments with a 30-mm cyclone using a stable suspensoid medium. and with a 104-mm cyclone using both water and unstable (conventional) ferrosilicon media.
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A Model of Dense Medium Cyclones
Coal Preparation, 1989Abstract A Model of dense medium cyclones is developed based on balancing the terminal velocities of the discrete particles due to the centrifugal force against a random turbulent eddy velocity. An expression of the form — P/100 = e−xQ −1/e−x −1 where P is the partition number, α is a function of cyclone efficiency, particle size and density ...
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