# 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):

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.

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

## 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

So we can find:

from the below graph, we can find d50 is 14 Micron Meter

```                                           Determination of d50 from the desired particle separation
```

for

we can find Dc using below graph, and Dc is 16 cm

after that, for looking at another dimension base on the below figure:

the dimension of the cyclone are:

Thickness plate 2 mm

DC 160 mm

DC/5 32 mm

DC/3 53.33 mm

DC/2 80 mm

DC/7 22.86 mm

DC/10 16 mm

## CFD

```    Step 1: generating geometry base on calculation.
```

```    Step 2: generating mesh
```