| 摘要 |
A method for separating a collection of particles according to size, shape and/o r density, whereby the collection of particles being fed through a vibrating space with classifying elements (1, 7-11) in the f orm of screen cloths, wires or bars. The invention is characterized by that the classifying elements have a more vigorous movement (3) mostly perpendicular to the classifying elements near the inlet end of the space and a more gentle movement (4) which is more horizontal at the outlet end of the space.
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