McLanahan Mineral DDC-Sizers are ideal for the primary and secondary crushing of hard rock and soft minerals with feed lump sizes up to 47" (1200 mm). They can handle clay-ridden, sticky material more effectively than other types of crushers.
They feature two inward rotating roll shafts with replaceable segments equipped with crushing hammers. The preferred method of feeding is by an Apron or chain-type feeder, which delivers material at a uniform rate and distributes it evenly across the roll shafts.
As the material comes into contact with the rotating shafts, the hammers on the roll shaft segments grip, position and break the material in stages. Material that is to size can pass around or between the shafts. The breaker bar can perform an additional reduction, further reducing the material to size.
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