Rock Products

JAN 2019

Rock Products is the aggregates industry's leading source for market analysis and technology solutions, delivering critical content focusing on aggregates-processing equipment; operational efficiencies; management best practices; comprehensive market

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48 • ROCK products • January 2019 EQUIPMENT & TECHNOLOGY CRUSHING & BREAKING Multirok vertical shaft impactors, man- ufactured by thyssenkrupp can be used flexibly in stationary, semi-mo- bile and mobile plants. thyssenkrupp also carries out intensive research and development work to continuously optimize the proven concept. In vertical shaft impactors, the mate- rial is fed centrally into the rotor from above. The centrifugal forces inside the rotor throw the material against the sidewall, resulting in a highly cubical product. Multirok impactors from thyssenkrupp are available in two sidewall and rotor variants: the sidewalls can be equipped either with anvils or with a material bed. For the rotor, there is a choice of open or closed configuration. The opti- mum design is selected on the basis of the feed material and the specific cus- tomer requirements. thyssenkrupp offers its Multirok ver- tical shaft impactors in three sizes: Multirok 7 for throughputs of up to 200 tph; Multirok 9 for throughputs of up to 300 tph; and Multirok 9 Duo – which has two drive motors – for through- puts of up to 400 tph. The product size is mainly influenced by the rota- tional speed of the rotor. The Multirok can be equipped with a variable fre- quency drive to adjust the rotor speed. This ensures quick and easy product changes during operation. Maintenance is a key issue in the operation of vertical shaft impactors. Multiroks from thyssenkrupp are of robust design and offer a long service life while ensuring easy access to key components. The rotor liners and liner plates on the rotor and the anvils in the anvil ring can be accessed and replaced simply via a hydraulically removable housing cover. All wear parts are made of highly wear-resistant materials. The versatility of the Multirok does not end with the configuration of the side- wall and rotor. Operators can respond at any time to changes in operations and subsequently switch between anvil ring and material bed and between open and closed rotor designs. All Multiroks are also equipped with automatic lubri- cation units for the drive shaft roller bearings to ensure reliable lubrication. thyssenkrupp, www.thyssenk- Telsmith 44SBS Cone Designed for Coarse Feed The Telsmith 44SBS cone crusher is specifically designed for large, extra coarse feed material ideal for secondary and tertiary circuit positions in mining, aggregates and crushed stone production. Available in stationary units as well as in portable configu- rations, the 44SBS 223.71-kW (300-hp) cone offers output capacities ranging from 135 to 351 tph or 150 to 390 short tph depending on desired final output size and provides up to a 200-mm (8-in.) feed size. Safety and uptime are engineered into 44SBS cone crush- ers by adding the Telsmith exclusive, patented overload protection design which limits the amount of force the cone crusher needs to absorb when it encounters overloads or tramp metal – providing the best protection for internal parts. This design has proven to save operations thousands of dollars in unexpected repair costs. The 44SBS allows for quick and safe chamber clearing should you have a power failure or tramp metal in the crusher. With a push of a button, the 44SBS crusher clears in minutes, avoid- ing hours of downtime. Operators simply flip a switch from the "crush" mode to the "clear" mode, and the upper frame is lifted vertically allowing the material to easily and safely fall through the crusher bringing you safely back in production with a minimal loss of time and profitability. The Zero Maintenance Anti-Spin System includes a small hydraulic motor that is attached to the shaft preventing the head from spinning when running with intermittent feed. No adjustments, resetting or regular maintenance schedules are needed. The anti-spin system provides longer manganese life and produces a more cubical product. Telsmith Inc., thyssenkrupp Offers Multirok Vertical Shaft Impactors

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