While early workers experimented with cyclones as small as 5 mm diameter, commercial hydrocyclone diameters currently range from 10 mm to 2.5 m, with separating sizes for particles of density 2700 kg m 3 of 1.5300 μm, decreasing with increased particle density. Operating pressure drop ranges from 10 bar for small diameters to 0.5 bar for large units.
50 . d 50 predicted is closer to the experimental one , than those predicted from the other models . Probably this is due to the superior fitting capability of
The model is designed with combination of 16° cone angles and 0.027, 0.027 and 0.010m inlet, overflow, underflow cylinder diameters. The hydrocyclone is
The Multotec hydrocyclone technology range comprises cyclone diameters from 25 to 1 400 mm. Most of these diameters can accommodate a range of cone angles, while different vortex finders and spigot diameters are standard for all diameters.
Experimental curves were compared with frac tional efficiency curves generated by several cyclone efficiency theories. Over the range of particle sizes mea sured , the predictions of a modified version of Barth's theory and the Leith Licht theory were closest to experimental results. NOMENCLATURE cyclone inlet height, m
To find the equivalent area factor, a minimum. and a maximum pressure drop over this range is applied and a. range of hydrocyclone diameters from 0.01 m to 1
In the present study, for the first time, a new hydrocyclone design has been conceptual ized and tested for its efficiency in separation of particles based on gravity. Experimental investigations have been carried out using design of experiments
This is the size of the particle that has a 50% chance of leaving in either the underflow or overflow. The cutpoint is normally represented by the symbol d50 and for spherical particles p Ac 2 3 dp so that d50c 0.75!f CD!s!f rv2 r v2 For a particular cyclone the particles that have a 50% chance of passing to overflow will satisfy Eq.
cyclones apply to the standard cyclone geometry. The main parameter is the cyclone diameter. This is the inside diameter of the cylindrical feed chamber. The next parameter is the area of the inlet nozzle at the point of entry into the feed chamber. This is normally a rectangular orifice, with the larger dimension parallel to the cyclone axis.
June 10, 2020
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