| 摘要 |
An apparatus ( 1 ) for mechanical processing of materials ( 7 ) in the dry state is of the type comprising a casing ( 2 ), within which are set a plurality of rollers ( 3 ) and at least one diffuser and/or contrast element ( 4 ) for said plurality of rollers. The casing likewise has at least one input section ( 5 ) and at least one output section ( 6 a, 6 b) for the materials. The apparatus is characterized in that the rollers ( 3 a, 3 b) are arranged around the diffuser and/or contrast element so as to define, for each roller, a gap (d) between the diffuser and/or contrast element and the side surface of the roller, and in that it comprises means for setting in rotation the diffuser and/or contrast element with respect to the plurality of rollers and/or for setting in rotation at least one roller, or the entire plurality of rollers, with respect to the aforesaid diffuser and/or contrast element.
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