CDE Wet Processing Solutions
Modular Washing Systems For Quarrying, Sand, And Recycling
95%
Water Recycling
30+
Years Experience
100+
Countries Served
100%
NZ Local Support
Why Choose CDE through Rocktec?
Rocktec delivers CDE’s fully integrated wet-processing systems built for cleaner materials, more innovative water use, and long-term sustainable performance across quarrying, sand production, and recycling.
Custom-Built for Your Site
Rocktec configures each CDE solution to suit your site, materials, and production goals for maximum efficiency from day one.
Proven Durability & Performance
By pairing CDE’s tough engineering with Rocktec’s local technical guidance, your plant stays reliable in demanding conditions.
Advanced Water & Fines Management
Rocktec helps you implement CDE’s water recycling and fines recovery systems to reduce waste, lower freshwater use, and improve compliance.
End-to-End Technical Support
CDE’s world-leading systems are supported by Rocktec’s hands-on installation, troubleshooting, and long-term service.
Solving Critical Processing Challenges
Whether you’re upgrading or building new, CDE’s fully integrated wet-processing systems are engineered to tackle tough material-processing challenges and deliver long-term performance in demanding quarrying and recycling conditions.
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.
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.
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.
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.
Common Processing Challenges
Clay-heavy feedstocks, fines loss, and limited water access can slow production and reduce efficiency.
Targeted CDE Solutions
High-efficiency washing, advanced classification, and robust water recycling tackle your toughest material challenges.
Proven Results
Recover valuable fines, reduce waste, and boost productivity with CDE’s integrated solutions.
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.
Custom Solutions
We design equipment to meet the unique needs of each site, ensuring optimal efficiency and throughput for your specific requirements.
Built to be Tough
Our solutions withstand the harshest working conditions, delivering consistent and reliable performance using premium materials and advanced manufacturing.
Expert Support
From design to commissioning, our team provides hands-on assistance, installation support, troubleshooting, and ongoing maintenance partnerships.
95%Water
Recovery Rate
40+
Years CDE Experience
30+
Years Rocktec Expertise
100%
NZ Local Support
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.
Complete Your Environmental Control System
Trackout Control Mats
Durable, reusable construction entrance systems that minimize sediment tracking onto roadways as vehicles enter and exit sites.
Dust Suppression Systems
Advanced dust control solutions for material handling and processing areas to complement your trackout control program.
ESS Conveyor Skirting
Dust-tight sealing systems for conveyor transfer points, providing comprehensive dust control throughout your operation.
Environmental Solutions
Complete range of environmental compliance solutions including water treatment, dust suppression, and waste management systems.
Proven Solutions in Action
Whitehall Quarry: A Rocktec-Engineered Transformation Delivering Results
In 2023, Winstone Aggregates began a major upgrade of its Whitehall Quarry to meet growing demand across the Waikato and Bay of Plenty regions. Rocktec
Hi-Lab Aggregate Plant Built for Stevenson Construction – Huntly, NZ
Rocktec designed, built, and installed a custom hi-lab aggregate plant for Stevenson Construction Materials at their greenfield site in Huntly, New Zealand. This modular, skid-mounted
Tertiary Crushing Plant Installed for Stevenson – Drury, NZ
Rocktec designed, built, and installed a high-performance tertiary crushing plant for Stevenson Construction Materials at their Drury Quarry site. This advanced system improves final-stage material
Slag Processing Plant Built for Winstone Aggregates – New Zealand
Rocktec partnered with Winstone Aggregates to design, build, and install a high-performance slag processing plant in New Zealand. This purpose-built system was developed to crush,
