12 April 2019, 14:34
Haver & Boecker Niagara's Hydro-Clean™ washing system effectively cleans deleterious material from aggregates and minerals while reducing water consumption by as much as 75 percent and energy costs by up to 15 percent over traditional washing systems.
Haver & Boecker Niagara is featuring the Hydro-Clean in Hall B2, Booth 149 at bauma 2019 in Munich.
“We want to ensure our customers maintain the highest efficiency and achieve maximum ROI,” said Peter Grotjohann, managing director of the German facility. “The Hydro-Clean washing system is one of a kind. It helps us to achieve this initiative by quickly and thoroughly cleaning materials to provide our customers with more sellable product and minimize material and resource waste.”
Due to its compact size and weight, overall operating and structural costs are considerably lower with the Hydro-Clean than with traditional washing systems, which also have a larger footprint and require more equipment.
Taking feed material as large as 150 millimeters (6 inches) into its vertical drum, the Hydro-Clean employs high-pressure nozzles, rotating at 90 rpm, to spray as much as 90 percent recycled water on the material with pressures as high as 140 bars (2,000 psi). The washing system removes silt and clay particles as small as 63 microns from mineral mixtures. The washer comes in four model sizes — the HC350, HC700, HC1000 and HC2000 — that process 18 to 400 tons per hour, depending on the model and application.
The Hydro-Clean consumes minimal resources. Water consumption ranges from 102 to 798 L/min (27 to 211 gpm), depending on application and model size, and energy costs are as much as 15 percent lower than with conventional washing systems. The Hydro-Clean also experiences less wear than washing alternatives, thanks to a maintenance-friendly design that allows for easy exchange of the few standard components.
Ideal for use in clay-heavy material deposits, the Hydro-Clean is fed contaminated material via a hopper into its vertical drum. Once inside, high-pressure nozzles mounted at the top rotate and spray the material with water. The turbulence in the drum creates additional scrubbing and abrasive forces that enhance the cleaning process as the material travels down the drum cylinder. High-pressure streams of water are injected into holes and cracks within the rock that are difficult to reach with traditional cleaning methods, creating a cleaner product that generates higher selling value. In addition, many producers use this washing system to turn material that was once waste into sellable product.
During the cleaning process, the washed material works its way down the drum and exits onto a discharge conveyor that leads to a wash screen. The screen removes any remaining dirt or clay still on the stone as it fractionates the material.
Source: Haver & Boecker