Modern Quarrying Q1 2019

The Combo™ features patented technology that combines feeding, washing, grading, dewatering, water recycling and stockpiling onto one compact chassis.

30 to

20 BILLION TONNES

250 TONNES/HR

Tonnage range of the Combo

The amount of sand the world consumes per year

minimal grade specifications and where reduced costs are prioritised over quality, sand and aggregates washing is now widely recognised as the best value-for-money option by those wishing to achieve a high-quality product that will guaran- tee longer-term resistance to erosion of the final construction material.” The patented Combo™materi- als processing solution offers the opportunity to produce high-quality sand products, including from a crushed rock feed, freeing operators from having to rely solely on the extraction of natural sand. The technology, unique to CDE, is taking the wet processing industry by storm, breaking conventions to

the centre of the materials industry’s concerns, the features of the CDE Combo™ system ideally match quarry operators’ requirements”. When natural sand becomes optional Indeed, primary sources of natural sand, river beds and deserts are now increas- ingly being protected by governments that closely monitor sand mining and sanction illegal operators. Often, when unable to mine for natural sand, some operators resort to using unwashed crusher fines to produce cement and mortar at low cost, producing poor to very uneven results. But it is not a case of ‘either - or’, natural sand or unwashed crusher fines. For those who wish to produce sand at consistent quality and quantity levels, with the option to choose specific grades, materials washing is the simple and acces- sible solution for their operations. “The ever-growing need for quality sands, combined with depleting reserves of natural sand, has compelled South African construction companies to consider manufactured sand as a means to increase their returns on investment, increase product quality and adaptability, and stay one step ahead of their competitors,” says Govender. “While unwashed crusher fines continue to be used in operations that require

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QUARTER 1 - 2019 MODERN QUARRYING