Method for determining equivalent hydrodynamic granulometry and possibly from that granular differentiation, and device used with it

摘要

Method for determining the equivalent hydrodynamic granulometry of a material by means of hydro-cyclone separation, according to which method a suspension of the material from a receptacle (1) is added to a hydro-cyclone (2) with an upper course pipe (12) and an under course pipe (11), characterised in that only one single hydro-cyclone (2) is used of which the under course is recycled to the receptacle (1), a well-defined sample volume is removed from the upper course at well-defined intervals, the samples taken are dried and weighed, and starting with the masses of the samples in function of time and taking into account the Gx-curve of the hydro-cyclone, the granulometry is calculated.