Large Throughput, Primary Separators.

Quality requirements to be met by roadbuilding, and concrete aggregates, in so far the maximum admissible content of the contaminants is concerned, necessitate installation of effective screen-separators. Their efficacy depends on proper choice of oscillating system and of screen-design. Primary separators are not only used for removing dirt but are also meant for relieving primary and secondary crushing equipment. THe paper describes a number of plants which feature high feed rates and -sizes.