Separating small particles from liquids with the hydrocyclone, Part II - effects of major design variables

Abstract

Hydrocyclone feed, overflow and underflow diameters are established for optimum concentration of solid and maximum clarification of liquid using an 11.5 ± 0.5 per cent, by weight suspension of sub-sieve barium sulphate in water.

For a hydrocyclone with a nominal diameter (Dc) of 100 millimetres the dimensions for optimum concentration are: Feed diameter (Di) = 0.082 inch (Dc/5) Overflow diameter (Do) = 0.098 inch (Dc/4) Underflow diameter (Du) = 0.037 inch (Dc/11) Vortex finder outside Diameter (VFOD) = 0.197 inch

and the dimensions for maximum clarification are: Di = 0.055 inch (Dc/7) Do = 0.079 inch (Dc/5) Du = 0.058 inch (Dc/7) VFOD = 0.197 inch

Brief observations are given on the air core and the effects of feed solid concentration and feed solid particle size.