November 23, 2017

Connecting, adapting and delivering

washed sand from EvoWash to rubber lined chute

Through the presence of business development managers keeping track of trends and local conditions in Africa, CDE Global is able to address the specific sand and gravel washing requirements of organisations in Africa.

As you would expect, the recent downward economic trend in the international construction and mining industry has created the impression that it is no longer possible to find cost effective sand and gravel washing systems. However, the technical team from CDE Global says it considers this situation as both a challenge and an opportunity to create appropriate solutions to enable organisations cope and sustain their businesses.

While, some companies that have grown phenomenally have let complacency set in and become detached from specific needs of their customers, as far as possible, CDE connects to the market. That’s why it has continued to grow as the world’s leading washing company.

In particular, CDE’s approach to business is to treat the needs of clients in each region according to their own merits. And Africa is no exception.

CDE’s business development managers are based in Africa to fully understand the sand and gravel washing requirements in the region and provide a knowledgeable and personal service to clients. Supported by highly experienced CDE designers and engineers, they develop the best value-for-money washing solutions with their customers for optimal efficiency and return on investment, even for operations with very specific needs, such as those running in remote locations and arid environments.

AquaCycle thickener on limestone wash plant

A new way forward

Whilst conventional bucket wheel washers and screw classifiers are cheap to buy, they also lose in excess of 20% fine sand, which leads to a lack of finer fractions of sand between 1mm and 300 micron in the grade and quality of the final washed product. Another drawback is the loss of production when settling ponds need to be cleaned on a regular basis.

  • Best quality sand

Always striving to be abreast of trends, CDE is increasingly witnessing a strategic shift by African quarry and mine operators who recognise that, to gain an edge over their competitors, they need to offer the best quality sand to their customers. For instance, to target a better and more profitable market segment and increase return on investment, operators are starting to invest in more efficient sand and gravel washing systems such as the popular CDE EcoWash, which comes with its own electric control panel and is pre-wired.

  1. Water efficiency

Water conservation being a major concern in Africa, savvy customers often combine their plant with a CDE AquaCycle, which recycles 90% of used water and runs for as little as R3/tonne. Mobile and compact, CDE plants, with advanced no spill transfer points, high quality components and reduced maintenance, offer a simple, one-touch solution.

Long-term Return On Investment (ROI)

Wayne Warren, CDE Business Manager for Sub-Saharan Africa, says: “It is definitely worth looking beyond the initial cost of the equipment to see that in the long run, bucket wheel washers and screw classifiers are actually a money drain.

“With a modular and economical sand washing system that requires a minimal amount of civils and provides consistent high-quality sand in any quantities, the choice is clear.

“If you buy the right plant for your operations, reduced maintenance, reduced manpower, reduced slimes management and continuous operation with water control far outweigh any short term savings.”

After-sale services

Attentive to its clients’ needs, CDE understands that operators may not always feel confident to be left to their own devices once their plant has been installed. Hence, it offers a complete after care package to customers, who benefit from the best after-sales service in the business.

Wayne Warren continues: “For operators located in very remote regions, we also advise stocking some spares on site to reduce risk in case of a breakdown or preventative maintenance actions. We have a wealth of experience in washing applications in various types of rock, so we are able to advise our customers on the best recommended spares package.“Also, as every part is built and tested at the CDE factory before the plant is tested again and shipped to the customers, deployment time is short with minimal disruption to the site’s operations.”

Revolutionary ‘all-in-one’ mobile solutions

The CDE EvoWash range has revolutionised the sand and gravel washing industry in terms of efficiency, allowing customers to wash even the dirtiest of sands and aggregates thanks to its pinpoint accuracy in silt and clay cut points (usually around 75 to 63 micron).

The complementary CDE AquaCycle range enables user-friendly water management on site, with a thickener system that recirculates 90% of the waste water from the sand/gravel washing plant immediately for reuse. As a welcome bonus, the AquaCycle comes as a neat compact solution that can easily be added on to the sand washing plant.

Comprising an EvoWash unit and double or triple deck rinsing screens onto one compact chassis, the CDE M2500 was the first all-in-one washing solution to be created, with a capacity of up to 250 tonnes per hour. Its powerful upgrade, the M4500, with a capacity of up to 450 tonnes per hour, has recently been added to the M-Series range.

Paying particular attention to quality, performance and resilience, all transfer points, pumps and pipes are rubber-lined for maximum wear resistance, screening media use Isenmann high wear life PU panels and the Infinity range features a high frequency zero-weld screen design. Each machine is developed, made to order and tested at the CDE factory to satisfy every requirement set out by the client.

For quarry and mine operators who wish to optimise business opportunities, the flexibility of new sand washing opportunities and the range of applications available to them are set to revolutionise the African market.

Future prospects

Nicolan Govender, CDE Regional Manager Africa, reflects on the future of the sand and gravel washing business: “The concrete market in Africa is screaming for better quality sand. Currently, concrete producers are making do with a combination of dry crusher sand and natural river sand. “The gradings and quality of these sands fluctuate, especially the natural river sand in regions affected by drought. Washed sand and gravels are consistent and enable concrete producers to steady their mix designs and thus save on water and cement consumption.

“Environmental pressure to stop river sand mining, as well as increased government duties on these mining activities will make natural river and plaster sand either scarce or too expensive for the local market.

“The future of the African construction and mining sector is bright as we are starting to witness an upturn in the region’s economy. Major infrastructural projects are currently in the pipeline and as they commence in the near future manufactured sand is going to become more prominent, with natural river sand resources becoming less attractive due to taxes or availability.

“Sand and gravel washing allows you to sort and valorise construction and demolition waste, produce rinsed aggregates in demand for road projects and create a variety of sands for the glass and golf industries to name just a few applications.”

“In short”, Nicolan Govender concludes, “if as an operator you have a washing solution that covers both your customers’ needs for various grades of high quality sand and gravel and your own requirements for efficient, reliable and economical equipment providing high return on investment, you are master of your washing destiny.

“A complete EvoWash and AquaCycle combo plant is the only compact, integrated solution you need to lead the African sand-washing pack!”

Wide scope of solutions

CDE Global is the leading provider of washing equipment for quarries, mines and recycling operations on the global market.  The CDE equipment range has applications across a wide range of materials and is delivering significant efficiencies in the construction and recycling, mining, specialist industrial sands and environmental sectors.

Working across 5 sectors and 8 regions CDE has been co-creating with customers for over 20 years to deliver collaborative, imaginative and unique processing systems.

The CDE Global Design Headquarters are in Cookstown, Northern Ireland and the company also has offices in:

  • Kolkata, India to serve the Asian market
  • Sao Paulo, Brazil to serve the Latin American market
  • North Carolina, USA, to serve the North American market
  • Dubai, United Arab Emirates, to serve the Middle East market
  • CDE Global Business Managers are also based in South Africa, to serve the market in Sub-Saharan Africa and in Tunisia, to serve the North African market.

For further information on CDE Global please visit

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