Aggregates Manager Digital Magazine
Issue link: http://read.dmtmag.com/i/742224
37 AGGREGATES MANAGER / November 2016 by Therese Dunphy | Editor-in-Chief | tdunphy@randallreilly.com SUPPLYLINES Screen Machines Regardless of material size and moisture content, the right screen can meet your sizing and separation needs. The BHST high-speed vibrating screen, manufactured by Deister Machine Co., Inc., is said to deliver optimum separation of fine materials due to a steeper screen inclina- tion (typically 30 degrees), effective material bed management, and higher G-force operation. Increased inclination boosts the particle travel rate, reducing the bed depth, while a higher-than-conventional speed and stroke create maximum G-forces that quickly stratify material for effective screening. Deister employs either end-ten- sioned screen cloth or a modular urethane deck to help eliminate possible blinding during high-frequency applications. Either screening medium eliminates the chan- neling of fines to the sides, resulting in uniform bed depth and maximum screening efficiency. The screens are available in a wide range of sizes up to 6x18. Deister Machine Co., Inc. | www.deistermachine.com Kleemann says its Mobiscreen line has a mobile screen for every need, from the quick-setup MS 16 and MS 19 — which are designed mainly for the contractor, but are also at home within the quarry — to the larger MS 18 and MS 20, designed principally for quarry applica- tions and high output. They complement the Kleemann crushing line from Wirtgen America Inc. Mobile track-mounted screen plants range in screen surface size from 8.4 to 22 square yards. They are supplied as double-deck (Z-version) or triple-deck (D-version) screens with or without feed hopper, as a banana screen, with finger-screening sur- face with rubber perforated panels, and more. The screens are suitable for use where high outputs are required and heavy-duty material must be separated. Kleemann | www.wirtgen.com Steep screen incline facilitates separation of fines Versatile heavy-duty screen options Astec Mobile Screen's track-mounted GT205 Multi- Frequency Screen's unique design blends the technol- ogy of conventional incline and high-frequency screens to create a screening tool that offers increased fines separation. The design is based on the concept that coarse material requires more amplitude and less fre- quency while finer material requires less amplitude and more frequency. The multi-frequency screen is said to allow producers to process finer materials with higher moisture content than conventional screens can handle, while being operated at a lower angle than a high- frequency screen. Astec Mobile Screens | www.kpijci.com Multi-frequency screen separates fines