▁The ▁device ▁is ▁therefore ▁a ▁means ▁of ▁select ive ▁concentration ▁of , ▁for ▁example , ▁min er als . ▁ ▁This ▁device ▁is ▁also ▁related ▁to ▁the ▁cent rif uge ; ▁both ▁of ▁them ▁are ▁intended ▁to ▁separate ▁heav ies ▁and ▁lights ▁in ▁liquid ▁by ▁application ▁of ▁cent rif ug al ▁force . ▁Cent rif ug es ▁generate ▁the ▁separation ▁force ▁by ▁rotation ▁of ▁the ▁entire ▁equipment ; ▁hydro cy cl ones ▁util ise ▁cent rif ug al ▁forces ▁from ▁the ▁movement ▁of ▁the ▁flu ids ▁to ▁achieve ▁separation . ▁ ▁Design ▁equations ▁ ▁For ▁a ▁Brad ley ▁hydro cy clone , ▁the ▁dimensions ▁of ▁each ▁part ▁are ▁always ▁in ▁the ▁same ▁proport ions . ▁The ▁pressure ▁drop ▁should ▁be ▁between ▁ 2 0 ▁p si ▁and ▁ 6 0 ▁p si . ▁▁ ▁Di ▁is ▁the ▁in let ▁diameter ▁ ▁Do ▁is ▁the ▁overflow ▁diameter ▁ ▁Du ▁is ▁the ▁under flow ▁diameter ▁ ▁D c ▁is ▁the ▁chamber ▁diameter ▁ ▁L ▁is ▁the ▁height ▁of ▁the ▁hydro cy clone ▁ ▁l ▁is ▁the ▁height ▁of ▁the ▁cyl inder ▁part ▁of ▁hydro cy clone ▁▁ ℓ ▁is ▁the ▁height ▁of ▁the ▁vor tex ▁t ube ▁of ▁hydro cy clone ▁ ▁Le ▁is ▁the ▁length ▁of ▁the ▁out let ▁t ube ▁ ▁Th eta ▁is ▁the ▁angle ▁at ▁the ▁base ▁of ▁the ▁hydro cy clone ▁ ▁Di / D c ▁= ▁ 1 / 9 0 ▁ ▁Do / D c ▁= ▁ 1 / 5 ▁ ▁Du / D c ▁= ▁- ▁