D r y f i n e s C r e e n i n G Dry f ine s creenin G Princi P le of o P era T ion Scalp Screening F eed Discharge Grade Screening Elliptical Screen Movement Conveys P article A cceleration Steep Screen Angle Thins L oad Depth L ess P itch Slows Depth Shallow Angle Slows L oad Elliptical Screen Movement R etains Highest Throughput of F ines in F irst T wo F eet Nearsize Screening Done Here CM The high frequency low amplitude motion produced by Derricks complete line of vibrating motors produce a unique verticalelliptical movement that quickly conveys oversize particles down the screen This action produces a thin bed of particles leading to increased capacity and efficiency Single or multiangle screen bed configurations are available depending upon the separation goals and the amount of oversize and nearsize particles If required multiple cut points are easily obtained with various split hopper arrangements Keep in mind that for high tonnage separations it is usually more cost effective to use a combination of single andor double deck Derrick screens than machines with three or more decks Derricks worldwide dry screening success has also been driven by its continuing development of advanced nonblinding screen surface technology For example materials with high moisture content that would normally blind other types of equipment are successfully screened using Derricks unique floating backing wire system 16