CH598874

A high capacity gravity separator for separating particulate material into different weight ranges. The separator includes a vibrating, gently-sloping triangular deck having a front edge from which separated particles are received and rearwardly converging side edges forming a rear vertex and upper and lower side vertices. A stream of particles to be separated is dropped toward the rear vertex of the deck, and a transverse air stream is flowed through the falling particles toward the lower side vertex of the deck to entrain and remove very light, unwanted particles and to preliminarily separate lighter particles from the remaining particles by blowing the lighter particles further along the deck toward the lower side vertex.