Rock Products

JUL 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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40 • ROCKproducts • July 2019 EQUIPMENT & TECHNOLOGY PUMPS & MOTORS With its Sirius 3RW5 range, Siemens has launched a new generation of soft starters for simple to demanding motor requirements. This comprehensive range of devices for the soft starting of three-phase asynchronous motors from 7 to 1,600 hp enables efficient, seamless, and easy motor protection implementation.The new Sirius 3RW5 soft starters are suitable for any motor, they can be easily integrated into a new or existing automation system, and they supply data right up to MindSphere, the cloud-based, open IoT operating system of Siemens. Standard programming functions such as automatic parame- terization, motor load ramp changes and electrical stabilization in the case of fluctuating- line voltages, all provide support for smooth motor operations in a myriad of applications. The new harmonized Sirius 3RW5 soft starter generation offers the right features and accessories for all requirements and adapts for application-specific or user-specific modifications. The new soft starter can also be used with individual expansions such as operator panels with and with- out display (HMIs), or communication via Profinet/Profibus and Modbus. The Sirius 3RW5 soft starters can be used in a host of applications thanks to specific functions – from pump- ing, ventilating and compressing, to moving and processing. In addition, they feature special functions such as starting time monitoring, automatic parameterization depending on motor startup, pump stop to avoid pressure peaks in piping systems, and condition monitoring with warning and alarm limits. They are also designed to be electrically rugged to fluctuations in line voltages. Siemens, Warman Pump from Weir for Aggregates The second-generation Warman WGR pump was specifically designed for the construction aggregates industry, offering several innovative features including improved hydraulic design, enhanced gland options, simplified wet-end and added benefits for safe and reduced maintenance. The replaceable impeller and liners are manufactured using Linatex premium rubber, proven to deliver the best wear performance and lengthen maintenance intervals for wet sand applications. While the streamlined slurry flow path reduces recirculation and energy consumption making this the ideal choice for sand and aggregate sites. Key features/benefits include: • Replaceable Linatex premium rubber wear components. • Adjustable impeller for sustained high efficiencies. • New hydraulic design reduces turbu- lence and minimizes power draw. • High capacity bearings to withstand high loads. • Enhanced gland seal options. • Ease of maintenance. Weir, Sulzer Offers Extra Heavy Duty Slurry Pump The EMW pump range from Sulzer has been designed considering historic field experience, coupled with the latest in fluid flow modeling technologies and finite element analysis, to create the latest in slurry pumping technology. The pump range offers high hydrau- lic efficiencies for optimized wear life performance in difficult solids handling applications. Main Benefits • Extra high durability. • Minimized total cost of ownership. • Low energy consumption due to high efficiency. • Easy and quick installation and maintenance. • Low spare cost due to high standard- ization between EMW-M and EMW-R. Main Applications • Mining and mineral processing. • Aggregates (sand and gravel). • Power. Such as bottom ash, lime slurry for flue gas desulphurization(FGD). • Food industry. • Wastewater. • Chemical slurries. Sulzer, Siemens Soft Starters for Demanding Requirements

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