Results 201 to 210 of about 933 (246)
Dense medium cyclones for coal washing - a review
, 2006 Coal is the world's pre-eminent energy source, and will remain so for many years. It is also a vital commodity in steel production, as well as in a number of other industrial processes. Prior to use, almost all coals need some form of washing, or preparation, to remove non-combustible material.
Holtham, P. N.
openaire +2 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
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
openaire +1 more source
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
openaire +1 more source
A general model of the dense medium cyclone [PDF]
, 2023 Mathematical models that predict the separation by the dense medium cyclone have been developed by researchers since the 1960's. These models have ranged from simple empirical equations to comprehensive models. A common factor shared by all these models is that they were developed from data that was focused upon a particular range of operating ...
openaire +1 more source
A CYCLONE fOR a REASON – Dense Medium Cyclone Efficiency
2016Cyclones have been in mineral processing since the first patent in 1912 and amongst the many uses of the configuration of the cyclones is the DENSE MEDIUM CYCLONE, used for separation of particles of different densities; separation enhanced by the use of either magnetite or ferrosilicon as an essential element of the process to create the desired ...
Kenneth R. G. Tuckey +2 more
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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.
openaire +3 more sources
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
openaire +2 more sources
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 ...
openaire +1 more source
Prediction of Underflow Medium Density in Dense Medium Cyclones
1992The prediction of the underflow medium density, ρu, in a dense medium cyclone is important, both because many empirical and phenomenological models of DMC performance incorporate ρu as an independent variable, and for plant design purposes. This paper reviews the published correlations for ρu, and presents some recent work on the subject.
Napier-Munn, T. J. +4 more
openaire +2 more sources