Unlock Smarter Sand & Aggregate Recovery with CDE Wet Processing Solutions
Rocktec, in partnership with global leader CDE, delivers cutting-edge wet processing systems for quarrying, sand production, and recycling.
Engineered to boost recovery, reduce waste, and manage water efficiently, CDE’s modular and turnkey solutions are trusted by producers worldwide — and supported locally by Rocktec across New Zealand.
Whether upgrading your plant or building new, CDE tailor systems that:
-
Clay-heavy and organic-contaminated feedstocks
-
Loss of fines and inefficient material separation
-
Limited access to water and dependency on settling ponds
Powered by proven technologies like EvoWash™, AquaCycle™, and ShearClean™, CDE systems deliver high-efficiency washing, fines recovery, and long-term performance.
Backed by Rocktec’s local expertise, CDE’s wet processing systems are fully integrated and built to perform in tough quarrying and recycling conditions — for the long haul.
Need to focus on cleaner materials, water efficiency, and sustainable processing?
Rocktec’s CDE solutions help you achieve environmental compliance while lowering cost per tonne.
Talk to Our Experts Today!
Proven Engineering. Trusted Worldwide. Built by CDE.
CDE’s expertly engineered wet processing plants—designed for durability, efficiency, and maximum materials recovery across global operations.
Wet Classification & Washing Systems
Clean, classify, and recover more with advanced washing solutions.
CDE’s cutting-edge wet classification systems are designed to remove clay, silt, and lightweight contaminants while recovering valuable sand and aggregates. Using systems like the EvoWash™ and ShearClean™, operators can improve product quality, reduce waste, and increase profitability with every tonne processed. Whether you’re producing construction sand or recycled aggregates, CDE systems adapt to your feed material and production goals.
Water Management & Recycling
Close the loop and cut water costs with intelligent recovery systems.
CDE’s integrated water management technology enables up to 95% water recycling, eliminating the need for settling ponds or lagoons. Solutions like the AquaCycle™ and Filter Press reduce freshwater dependency while maintaining consistent, high-volume output. Ideal for regions with limited water access or environmental constraints, these systems enhance sustainability without compromising efficiency.
Fines Recovery & Tailings Management
Recover high-value fines and reduce waste volumes.
CDE systems are engineered to retain fine particles that are often lost in conventional washing processes. Their fines recovery systems help increase overall yield, reduce tailings, and improve return on investment—especially in operations handling clay-bound or low-grade material. Customisable configurations ensure you recover more, waste less, and maximise resource use.
Modular Plant Design & Integration
Flexible, scalable solutions that grow with your operation.
Every CDE solution is built on a modular design philosophy, enabling rapid deployment, easy transport, and seamless integration into existing infrastructure. Whether you’re starting a new operation or upgrading a legacy plant, CDE’s plug-and-play modular systems simplify installation and future expansion—while minimising site disruption and setup time.
Looking to upgrade your washing plant?
Talk to Rocktec about integrating CDE’s proven wet processing technology into your operation. We’ll help you assess your site, identify opportunities, and build a smarter solution—engineered for results.
Rocktec Has You Covered for Custom Washing Solutions
Design Engineering
With decades of expertise, Rocktec delivers proven, high-performance design engineering solutions for quarrying, mining, and materials handling.
Project Finance
Need finance for a project, repair or upgrade? Talk to us about our custom finance options for your business.
Engineering Consultants
With extensive industry expertise, Rocktec acts as a primary consultant, seamlessly integrating multi-vendor solutions for quarrying, mining, and materials handling projects.
Industry Leading Performance & Reliability
Custom Solutions
We design equipment to meet the unique needs of each site, ensuring that every solution is built to optimize your operation’s efficiency. Whether it’s a conveyor system designed for high-capacity movement or a crushing solution tailored to specific material requirements, Rocktec’s approach is centered on engineering precision and adaptability.
Built to be Tough
Our solutions withstand the harshest working conditions, delivering consistent and reliable performance in industries where durability is critical. We use premium materials, advanced manufacturing techniques, and rigorous testing procedures to ensure our equipment can handle extreme workloads and challenging environments.
Expert Support
From design to commissioning, our team is with you every step of the way, providing hands-on assistance and technical expertise. Our experienced engineers and support staff assist with installation, troubleshooting, and ongoing maintenance. We pride ourselves on delivering long-term partnerships that support the success of your operations.
Proven Solutions in Action
Ag Shed Conveyor System Installed for Ravensdown – Te Kuiti, NZ
Rocktec delivered a fully customised ag shed conveyor system for Ravensdown’s Supreme Lime facility in Te Kuiti, New Zealand. This mechanical plant upgrade was designed to improve bulk material handling, optimise storage efficiency, and meet strict safety standards in a busy agricultural setting....
Quarry Sand Processing System Installed for Winstone – Belmont, NZ
Rocktec designed and installed a complete quarry sand processing system at Winstone Aggregates’ Belmont Quarry in Wellington, New Zealand. The upgraded plant features new conveyors, a cyclone tower, dewatering station, and screen systems—streamlining sand handling, washing, and classification...
Mobile Screening Plant Built for Road Metals – South Island, NZ
Rocktec designed and built a high-performance mobile screening plant for Road Metals Co Ltd, delivering reliable service under the harshest South Island conditions. Engineered for flexibility, rapid setup, and minimal maintenance, the plant provides a complete mobile solution for aggregate and...
Rocktec Capabilities
Our innovative equipment ensures seamless material flow, efficient crushing, and precise screening. Whether you need a single piece of equipment or an integrated system, Rocktec’s solutions are designed to enhance productivity, minimize downtime, and deliver long-term reliability.
Engineered for heavy-duty performance
Designed for minimal maintenance & maximum uptime
Custom-built solutions tailored to site requirements
Proven in mining, quarrying, and industrial applications
Discover Our Trusted Partners
Stay in the Lop
Sign up for Rock Solid the Rocktec newsletter that's almost 30 years old.