Patent ID: 6140040
Filing Date: 2000-10-31
Classification: B01D

Abstract:
A method of selectively mechanically separating microparticles according to microparticle size from a suspension of microparticles in a fluid, said microparticles having a size in the range of 0.1 .mu.m to 500 .mu.m, the method comprising:(a) providing on a support a particulate media having a standard selectivity equal to or greater than 4.0, selected from the group consisting of:particulate media with a median particle diameter equal to or greater than 20 .mu.m up to 35 .mu.m with a media index equal to or greater than 0.60;particulate media with a median particle diameter greater than 35 .mu.m up to 180 .mu.m with a media index equal to or greater than 1.0;particulate media with a median particle diameter greater than 180 .mu.m up to 500 .mu.m with a media index equal to or greater than 2.0; andparticulate media with a median particle diameter greater than 500 .mu.m up to 1400 .mu.m with a media index equal to or greater than 3.0; and(b) passing said microparticulate suspension through said particulate media, thereby effecting selective mechanical separation according to microparticle size.