- document
-
Rem, P.C. (author), Fraunholcz, N.O. (author), De Bruijn, A.J.M. (author)The invention relates to a method of separating particles in a fluid medium, wherein the particles have a density lower than that of the fluid medium. According to the invention the particles are subjected to an up and down moving flow of the fluid medium, whereby a barrier is present above the particles restraining said particles. It appears...patent 2001