New Gritbuster (WT-250) Launched

17 Nov 2014

Siltbuster, one of the UK’s leading providers of wet waste separation systems, have launched the Gritbuster WT-250, a larger version of the company’s highly successful material washing, separation and aggregate recovery system.

The original Gritbuster (WT-100) unit was designed around processing road sweepings tipped directly into the system by Road Sweepers and Gulley Tankers, whilst the WT-250 can be fed by telescopic loader removing the need for the bucket wheel and enabling a larger trommel to be installed, increasing capacity.

The Gritbuster WT-250 is aimed at the road sweeping & trommel fines waste recycling markets and is capable of handling up to 25 tonnes per hour. Using well established wet separation processes (detailed below) the plant separates feedstocks into washed gravel and sand products.

The Gritbuster Process:

* Raw material is loaded via a loading shovel or telescopic loader from existing stockpiles
* A screw feed auger ensures both dry and wet feedstocks are handled with ease
* The wet trommel is specifically designed to wash and separate the aggregate whilst minimising the risk of contaminating the sand product with organic matter producing a clean sand product
* An integral hydraulic density separator is used to separate coarse aggregate from plastic, sticks, etc, increasing recycling potential.
* Allows the recovered sand and gravel to be reused as non-structural fill or secondary aggregate if processed in accordance with the WRAP Protocol
* Minimises fresh water requirements by operating in a closed loop when used with a Siltbuster Water Treatment Plant and Filter Press
* Compact design allows installation on existing sites and integration with existing processes

A key aspect of the new design is the integral hydraulic density separator. Siltbuster MD and Gritbuster designer, Dr. Richard Coulton, describes how this has made the new Gritbuster WT-250 ideal for handling trommel fines and other drier feed material.

“We have always been able to produce good quality sand and grit by removing the fine organics, but by now incorporating a hydraulic density separator we can separate the larger material fractions on density rather than just physical size. This means heavier recyclables such as stone and aggregate are recovered in a cleaner recyclable form, from the lighter recyclables such as plastic, paper, wood and other floating materials. This has obvious advantages in terms of LOI reduction, but it also means the lighter items can themselves be recovered and go for recycling.”

The new Gritbuster WT-250 can be supplied with its own packaged Water Treatment & Recycling System and Filter Press.

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