Results 211 to 220 of about 933 (246)

Effect of Medium Composition on Dense Medium Cyclone Operation

International Journal of Coal Preparation and Utilization, 2014
The 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, Bruce Firth, Clint McNally   +2 more
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Mathematical modelling of dense medium cyclones

2023
A review of the literature showed that although at present there are several medium based models available for D.M. cyclones, none can claim applicability to both ore and coal as the development has been separately carried out in these areas. The initial objective of the present work was therefore, to synthesize various media based D.M.
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Modeling the Multiphase Flow in a Dense Medium Cyclone

Industrial & Engineering Chemistry Research, 2009
A mathematical model is proposed to describe the multiphase flow in a dense-medium cyclone (DMC). In this model, the volume of fluid multiphase model is first used to determine the shape and position of the air core, and then the mixture multiphase model is employed to describe the flow of the dense medium (comprising finely ground magnetite in water ...
B. Wang, K. W. Chu, A. B. Yu, A. Vince
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Dense Medium Cyclone Control – A Reconsideration

International Journal of Coal Preparation and Utilization, 2009
The 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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Measuring flow rate in the dense medium cyclone

Mineral Processing and Extractive Metallurgy, 2002
(2002). Measuring flow rate in the dense medium cyclone. Mineral Processing and Extractive Metallurgy: Vol. 111, No. 3, pp. 163-167.
Dunglison, M. E., Napier-munn, T. J.
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A study of coal washing dense medium cyclones

2023
Dense medium cyclones are widely used separating devices for the washing of plus 0.5mm coal. As approximately fifty percent of Australian coal is washed in these devices, efficient cyclone operation is obviously important. Optimization of dense medium cyclone circuits requires an appreciation and understanding of both cyclone operation and common ...
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Modelling of dense-medium cyclones treating coal

International Journal of Mineral Processing, 1986
Abstract 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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Dense medium cyclone technology to improve quality of coal

2015 International Conference on Quality in Research (QiR), 2015
Coal-fired plant pollution is due to the release into the atmosphere of the hot flue gasses produced from the combustion of coal. Dust from power plants has been linked to cancers, while SO2 and NOx have both been identified as acid rain precursors. NOx has also been associated with the production of photochemical smog.
Isworo Pujotomo, Retno Aita Diantari
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Studies on a Vorsyl separator as an alternate for a dense medium cyclone

International Journal of Mineral Processing, 1998
Abstract In India, a major portion of metallurgical coal is produced by the dense medium cyclone process. A Vorsyl separator, a centrifugal dense medium separator, is proposed as a possible alternate to the dense medium cyclone. Experiments were carried out in the laboratory on a 76-mm Vorsyl separator and a dense medium cyclone for treating the same
T.C. Rao, J.P. Barnwal, B. Govindarajan
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OPTIMAL UTILIZATION OF DENSE MEDIUM CYCLONES

2016
In the current world mining climate the focus is on reducing cost and increase productivity. In many instances this productivity is associated with increased tonnages, “sweating the assets”, which in many instances result in equipment being pushed to above their design limits. Simultaneously cost are being reduced, costs like spares holding, consumable
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