Page 23 - Hub-4 Magazine Issue 65

Hilltop Aggregates
increase production
with Dernaseer
Located deep in the Co. Tyrone, N. Ireland mountains Hilltop Aggregates was founded in 2012 by brothers Donal and Michael Donnelly to provide sand and aggregates to concrete producers and builders in the local area. In 2016, the company had installed a Dernaseer washing plant and since that time their business has continued to go from strength to strength with their reputation for producing quality materials.
Due to the increase in demand for materials Hilltop recently expanded their washing plant. As they had been pleased with the performance of their washing equipment they decided to to work with Dernaseer for the plant expansion.
The new extended plant involved installing a new 6m x 1.8m 2-deck primary washing screen. This screen scalps off the +40mm which is stockpiled for later crushing and produces two sand fractions which are fed to two DSP compact sand plants. This screen replaced the original 5m x 1.5m washing screen which has now been utilised as a rinsing screen in the new plant. Also, the original plant had produced two grades of sand in a single DSP compact cyclone sand plant but in order to double sand production a second new DSP120 sand plant was installed with one sand plant producing building sand and the other producing concrete sand respectively. The DSPs feature Linatex slurry pumps, Linatex rubber-lined
hydrocyclones and galvanised high-frequency dewatering screens.
As Hilltop had worked into their deposit the clay content had increased so a twin shaft DLW502 Logwasher has been installed to scrub the +5mm-40mm aggregates to ensure clean aggregates. The DLW502 Logwasher consists of twin rotating shafts fitted with heavy-duty abrasion resistant paddles. The paddles conveys the material through the logwasher where the stone on stone action scrubs it clean and breaks up any clay conglomerates which are then floated off through the back. Scrubbed aggregate exits the logwasher onto the 5m x 1.5 rinsing screen to rinse and size a range of aggregates.
For more information on Dernaseer’s product range please email info@dernaseerwashing.com or call +44 (0)78 098 64869

IN SAND & GRAVEL, AGGREGATES AND RECYCLING
T: M: E: sales@dernaseer.com www.dernaseer.com