Parnaby Cyclones supply Wm Hamilton & Sons with a Coarse Material Wash Plant with an Effluent Treatment System.
Plant handles muck away, sweepings and gulley waste.
Designed and supplied by Parnaby Cyclones the plant was commissioned in March 2025.
Obviously, a huge capability enhancement in delivering high-quality, efficiently processed aggregates for their clients and proof of their commitment to innovation and sustainability drives Wm Hamilton to continually improve their operations.
Ian Parnaby – Director, took up the story, “We decided that from the start there should be a huge focus on scrubbing the material, and we wanted to make the most of a tiered-site so we worked with the client and made special provision to provide them with good maintenance and accessibility.”
The 80 TPH plant feed starts at a 15tph, 15m³ feed hopper with oversize protection, a pre-wash screen (which washes, and size protects the Coarse Material Washer). The Coarse Material Washer is a variant on the Log washer (providing options, flexibility & ease of maintenance in tandem) and a Sizing Screen. A Natural Medium and Classifying Cyclone Module which provide two stages of density separation (one within the Coarse Material Washer but also the fines Cyclone.
The Effluent Treatment Plant consists of a 9m Thickener, and a 156 plate Filter Paper Plate Press complete the specification.
Course Material Washer:
One of the key points is that the shafts are independently driven and are spaced further apart, without the intermeshed panels flexibility allows swapping scrolls for paddles to decrease attrition for applications where generating fines is an issue. A bigger surface area allows water to be applied in multiple locations which provides less entrapment than a regular log wash. It also allows for the material to swirl within the paddles to allow better material separation rather than grinding it between the paddles which allows more residency time in the washer main body.
As the organics are flushed out of the back the level can be adjusted to allow a separation parameter change if required which is ideal for the more difficult materials. The position of the paddles can also be changed increasing residency time or changing the nature of the separation or the level of scrubbing.
Duncan Hamilton – MD, took up the story, “Manufacturing of the plant took approximately 6 months. From the outset it was clear to me that the Parnaby Cyclones team were very professional with industry leading experience and knowledge and had high standards in health and safety.
“The whole idea of the new plant was to efficiently recycle the waste we were processing. Originally, we were using the material to cover landfill site, now with all incoming material coming from the central belt the new plant can produce six saleable products with zero to landfill. The new plant has created a far better environmental solution.
“It is quite clear that Parnaby is a great company, and it is a solid partnership with a family firm with history.”