Modern Quarrying Q3 2019

TRAILBLAZING SANDWASHING

For maximum sustainability and profitability, it’s time to make the switch to the world’s first all- in-one materials wet processing and water recycling system. The next generation Combo™ with advanced cyclone technology processes both natural sand and crushed rock reserves to produce high quality materials for your customers. This energy-efficient solution provides five processes on a single compact chassis, including water recycling, to produce in spec sands that are ready for market straight off the belts. Making the switch to sand washing was a no-brainer for South African construction materials producer, Ground Breakers. Previously, the company used a bucket wheel on its Lindley quarry to transform decomposed granite into construction sand and aggregates. This system worked well, but in order to recover more value from their operations, Ground Breakers needed to decrease the loss of quality fines to settling ponds and produce a final product with less moisture. “The market required a clean washed concrete sand, and our bucket wheel was not delivering a quality product. We also lost a lot of fines to the settling ponds, wasting material that we could not sell without dredging the ponds and re-processing it through the bucket wheel.” JC Janse van Vuuren and Johan Meintjes – Owners, Ground Breakers.

With limited water sources and space, CDE created a modular sand washing solution to help Ground Breakers take its operations to the next level. The trailblazing Combo™ combines precise cut point accuracy and superior dewatering efficiencies to produce two high- quality sands simultaneously, including 0-6mm river sand and an extra 0-1.5mm plaster sand. With the system working as a full-circuit unit, it can efficiently retain fines and recycle up to 90% of the used water for immediate reuse in the process. This also significantly reduces the need for silt dams, allowing Ground Breakers to preserve valuable mining areas. “Switching from a bucket wheel system to the Combo™ has been conducive to considerable cost savings, as generally we sell per tonne. The additional -2mm product has many uses, from plastering exterior walls to making paving bricks. It has increased our profitability considerably.” JC Janse van Vuuren and Johan Meintjes - Owners, Ground Breakers. Adopting the Combo™ technology will decrease the loss of valuable fines to settling ponds, boost profitability and dramatically reduce maintenance and downtime. It’s easy to speed up your return on investment with the trailblazing Combo™ from CDE.

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