ABSTRACT
In most Croatian quarries of technical stone, deposits of a carbonaceous structure were exploited and just ten of a siliceous structure. By beneficiation of these rocks (by crushing and sizing) standard stone sizes for the production of concrete, asphalt masses, of supporting layers in roadmaking, and for metal and stone-flour were obtained. That production reached in 1998 a level of about 9,1 Mt, with financial value of some 635 Mio kunas.
In the paper the dust pollution sources were discussed, then the cleaning methods of the polluted air for the particular vessels, vehicles and the equipment in general were described, and the single operations explained. A description of the complete beneficiation plant is given–with the dedusting points and with an analysis of the used aerocyclone and cloth-filter.
