Patent ID: 7802686
Filing Date: 2010-09-28
Classification: B03B,G01N

Abstract:
1. A device for classifying fine particles in a fine particle dispersion in which fine particles are dispersed in a liquid medium, the device comprising: a first introducing portion having an introducing channel for introducing the fine particle dispersion, and a second introducing portion having an introducing channel for introducing a fluid containing no fine particles to be classified; a classifying portion which is disposed substantially horizontally and classifies the fine particles by causing the fine particles to be sedimented in laminar flow; and a recovery portion having a plurality of recovery channels disposed at different positions in a gravitational direction, wherein, the plurality of recovery channels recover the classified fine particles, one end of the first introducing portion is disposed above the classifying channel in a gravitational direction, and the other end of the first introducing portion is connected via a communicating portion to an upper surface of the classifying channel, openings of respective recovery channels are located below the classifying channel in the gravitational direction, and the introducing channel for introducing the fine particle dispersion and the introducing channel for introducing the fluid containing no fine particles to be classified are connected to the classifying channel from a different direction with respect to the gravitational direction that is perpendicular to the substantially horizontally disposed classifying channel.