| 摘要 |
A rotary drum air classifier system which includes a conveyor positioned to feed unclassified materials of various densities and weights into one end of a drum, and supporting means for the conveyor having means for moving the conveyor in any of three directions axially, vertically and laterally of the drum's axis so as to position its discharge end in desired position depending upon the density of the mixture of materials being fed into the drum, thereby obtaining maximum efficiency of the classification procedure.
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