Cyclone

basic calculation cyclone

The nomographs by Zanker can be used to make a preliminary estimate of the size of cyclone needed. The specialist manufacturers of hydrocyclone equipment should be consulted to determine the best arrangements and design for a particular application. Zanker’s method is outlined below and illustrated in the Example below and based on an empirical equation by Bradley (1960):

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Where:

d50 = the particle diameter for which the cyclone is 50 per cent efficient, Micron

Dc = diameter of the cyclone chamber, cm,

u = liquid viscosity, centipoise (mN s/m2),

L = feed flow rate, l/min,

pl = density of the liquid, g/cm3,

ps = density of the solid, g/cm3.

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                                           Determination of d50 from the desired particle separation

furthermore, we can see the different variable that determines cyclone such as viscosity, density, flow rate, diameter inside the cyclone.

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after define Dc, we can find another dimension base on the below picture.

for calculating efficiency cyclone, we can find by below equation.

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calculation Cyclone

Estimate the size of hydrocyclone needed to separate 90 percent of particles with a diameter greater than 20-micron m, from 10 m3/h of a dilute slurry. Physical properties: solid density 2000 kg/m3, liquid density 1000 kg/m3, viscosity 1 mN s/m