W.S. Tyler’s Hydro-Clean washing unit cleans aggregate using less water
W.S. Tyler says its new Hydro-Clean washing unit cleans aggregate while reducing water consumption by up to 75 percent over traditional log washers. The unit uses high-pressure nozzles rotating at 90 revolutions per minute to spray up to 90-percent recycled water on material with pressures up to 2,900 pounds per square inch. Its compact size and weight allows it to operate at lower costs than traditional washing systems.
The washing unit removes silt and clay particles as small as 63 microns and can process up to 400 tons per hour, depending on model size and application, according to the company. Where a traditional washing system can require up to three screens along with a log washer or screw, the Hydro-Clean unit requires only one additional wash screen for discharged materials.
Dirty material is fed via a hopper to a vertical washing drum where high-pressure nozzles mounted at the top rotate and spray the material with water, breaking up agglomerates and cleaning the particles of stubborn material. As material travels down the drum cylinder, turbulence in the drum creates additional scrubbing and abrasive forces that enhance the cleaning process. The high-pressure streams of water are injected into areas of the rock that are difficult to reach, resulting in a cleaner product. Washed material exits onto a discharge conveyor that leads to a standard wash screen, which removes any remaining dirt or clay. The resulting dirty water flows through polyurethane screen mesh in the sides of the washing drum and is collected by a waste water pipe, which sends the water to a treatment system.
The Hydro-Clean uses very little water and power. According to the company, water consumption ranges from 27 to 211 gallons per minute, depending on application and model size; and power requirements are no higher than 300 horsepower (225 kW) on the largest model. The unit is available in four model sizes that produce 20 to 400 tons per hour, depending on the application.
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