| 摘要 |
A method and apparatus for treating materials or material mixtures in a treatment apparatus operating on the principle of the double-action impact mill, which includes a discharge conveyor ( 34 ), such as a discharge screw. A material layer ( 40 ) is maintained between the discharge opening and the discharge conveyor, using the material exiting the outermost ring ( 16 '') of the treatment apparatus through the discharge opening ( 30 ), which layer prevents free discharge of the material to be treated from the treatment apparatus.
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