Modern Quarrying Q4 2018

WET PROCESSING

Haver & Boecker’s Hydro-Clean system recirculates 90% of the water it uses during processing, so minimal fresh water is required.

Dr. Metodi Zlatev, head of Sales and Projects at Haver & Boecker.

Cavex hydrocyclones and Enduron vibrating screens are part of the integrated washing solutions offered by Weir Minerals.

“It is important to know that we specify cyclones per duty, not from a brochure. Weir Minerals also partners with thickener and filter suppliers to provide a one-stop shop for sand producers. The option also exists to retrofit into the clients’ existing infrastructure, or to supply compact sand washing plants to add onto existing crushing and screening plants,” says Singleton. “Because Weir Minerals is the OEM of Cavex hydrocyclones andWarman centrifugal pumps, the plant efficiency and maintenance are controlled in-house and the extensive local and global product, maintenance and applications knowl- edge is available as support to our customers. Weir Minerals also produces all the sand washing systems and products used in sand washing systems in Africa, for Africa.” Singleton explains that Weir Minerals’ Cavex hydro- cyclone contains the innovative laminar spiral design feed chamber to reduce turbulence in the feed chamber, and provide a superior cut point (efficiency) as well as increased capacity. “We are able to feed the Cavex hydro- cyclones with our new generation Warman centrifugal slurry pumps from either our WBH or SLR pump ranges, depending on feed density,” he says.

more and more operations are seeking washing equipment to stay profitable as it allows them to clean that unusable material, thereby producing a sellable product and staying profitable. “Recycling demolition waste is also becoming a major issue in some countries, especially in large urban areas where, because of distance, it’s costly to transport mate- rial to natural aggregates landfills. With washing equip- ment, however, demolition contractors can clean material, then reuse it in concrete applications, saving considerable money,” he reasons. Weir’s cutting edge tech Singleton says that the heart of the sand washing process is the hydrocyclone, commonly referred to as a cyclone, which removes the slimes fraction and places the mate- rial within specification. To optimise the application and performance of the cyclone, Weir Minerals has a team of process engineers that specialise in the installation and operation of classification cyclones. These engineers are able to assist customers by assessing individual applica- tions and specific cyclone needs.

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MODERN QUARRYING QUARTER 4 - 2018