We have developed a classifier of cyclone type to eliminate coarse acrylic resin particles of 30μm size and over from the other fine. The classifier is composed of the outside and inside collection boxes, which configure the slit convex upward for separating. When the blow-up air from the outside box flows rotating into the slit, the coarse particles are selectively collected to the outside box by the centrifugal force of the rotating flow, which predominates over the drag force induced by the blow-up.
This paper investigated the influence of the width of the slit and the blow-up flow rate etc. on the performance, which was evaluated with the yields and the partial separation efficiency.
As a result, the classifier was optimized, and the feature was demonstrated in detail. Furthermore, the classifier proved to possess the high capability for separating without extremely decreasing the yield by means of coordinating the blow-up flow rate with the cyclone's main flow.