Page 35 - Hub-4 Magazine Issue 65
P. 35

     CDE solution
The resulting 220 tonnes per hour state-of-the-art wet processing plant represents the single largest investment Longcliffe Quarries has ever made.
Engineered to maximise product yield from heavy clay-bound feedstock, the plant features CDE’s signature AggMaxTM modular logwasher setup for scrubbing and sizing, incorporating CDE’s patented EvoWashTM classification and dewatering system which offers greater efficiency compared to more traditional washing methods.
Central to the system and to addressing the availability of clean water on site is CDE’s AquaCycleTM thickener which allows for up to 90% of the process water to be recycled and recirculated back into the system, offering near-total independence from fresh water supplies.
High value
Previously discarded clay-bound material is now producing high-quality single-sized aggregates and sand grades - providing high value revenue streams for the company. ‘It’s a win-win scenario’, as Russell explains. “We’re now supplying into both the ready-mix and decorative markets as a direct result of the quality of material output from the plant. We’re processing high volumes of low-grade feed and turning that into saleable products.”
“We’re recovering up to six different products from heavily contaminated material. The CDE plant is producing an exceptionally clean product and one that we’re now able to turn into a higher value industrial material.”
This has led to a significant 12% reduction in the quarry's load and haul fuel usage and follows an almost 70% reduction in net emissions recorded at the quarry since 2014/15.
“As we move towards a more circular driven economy, it’s vital that the industry continues to adapt. Our investments in renewable energy and this wet processing plant demonstrate our commitment to sustainability.
Technology
James Thone, chief executive officer of the Institute of Quarrying, says technology is reshaping how the industry operates.
“Projects like this are the future. It makes sense to do these kinds of things and I think the industry will view this with a real interest, particularly when you look at the big picture of the issues we’re facing as a society.”
The integration of technology and IT in the plant, Russell says, has impressed the team at Longcliffe Quarries.
“Due to the IT related to the plant, if we’ve got an unforeseen problem then CDE often knows about it before we do. That gives us the confidence and reassurance that we are working the right team.”
It features CDE CORE, a suite of smart technology tools that offers plant operators greater control over their plant and access to real-time data on how their plant is operating to maximise plant uptime and throughput.
“We want the plant to be running and producing products and so too does CDE. This exemplifies the partnership and shared ethos of both companies.”
 www.hub-4.com Nov/Dec 20 - Issue 65
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