Range of Small Vibratory Screens and Hydrocyclones for Construction Sites

Siltbuster Ltd (UK) has designed and developed a range of compact and mobile vibrating screens and hydrocyclones, to complement its hire fleet of water treatment and materials recycling equipment. These are aimed at the construction, materials processing and remediation industries. 

This is in response to market demand as Siltbuster’s CEO, Dr Richard Coulton explains: “In addition to the removal of silt and clay from water pumped out of excavations, we are increasingly being asked to provide equipment that removes sand and gravel from a variety of construction and remediation sources.

“Whilst lamella clarifiers still provide the best available technology for removing both coarse and fine particles (outperforming both screens and hydrocyclones in terms of their ability to remove finer particles), they do not allow the separation of the coarser sand and gravel sized particles for reuse. That’s why we have introduced these two new products.”

The vibrating screens and hydrocyclones will assist sites in minimising waste and achieving their sustainability targets by allowing the cost effective recovery of sand and aggregates. Depending on the deck sizes the screens can be used to recover between 5 and 20 tonnes per hour of coarse aggregate which translates into between 50 and 200 tonnes a day.

The range of hydrocyclones is primarily designed for the recovery of coarse to medium sized sand particles, but can also be used to recover a fine sand/coarse silt product suitable for re-use in low value applications such as pipe bedding, etc.

Hydrocyclones operate by using water pressure to create a spinning, high shear environment, in which the coarse solids are flung to the outside of the unit by centrifugal action and are then discharged via an opening at the bottom of the conical outlet hopper.

Whilst many aggregate processing plants already use large, static hydrocyclone installations to separate sand from silt, the new Siltbuster units, which are both compact and mobile, are much better suited for use on construction sites. The compact vibratory screens vary in size from 0.6m wide x 0.9m long to 1.2 x 2.4m long, making them ideal for handling smaller quantities of aggregate and for use on small or difficult to access construction sites.

The screens can be fitted with a variety of deck sizes from 0.3mm upwards, allowing their use not only for coarse aggregate recovery but also for sand dewatering. In addition by combining a hydrocyclone with one of Siltbuster’s vibratory screens the company can provide a compact unit that recovers and dewaters the sand too.