SPECIALIST EQUIPMENT


an approximate 300:1 water-to- additive ratio, the MEL-101 supports the water’s role in providing dust suppression using economically concentrated quantities. To control costs, the VFD driven pump regulates chemical fl ow by only releasing chemical when material is detected.


Sprayer placement is key “T e theory behind how we placed the spray heads is important,” says Nance. “It’s common practice for


companies to spray the top of the material after it’s been loaded on the belt as it’s exiting the settling zone. But that approach wouldn’t work for this application.” He explains, “T e problem with only spraying the surface is that only surface particles are treated, and the fi nes tend to ride on the bottom layer near the belt, preventing them from being eff ectively coated. T e untreated particles easily become fugitive once the cargo is disrupted or transferred.”


Due to the diffi culty of treating


particle emissions at the discharge of Conveyor 1, technicians set up the DCU to spray the material in the transfer chute between Conveyor 0 and 1. “By attacking the material from the top and bottom while it’s in free fall, we are able to eff ectively coat more of the dust particles,” says Nance. “As cargo continues its transit and is discharged onto the stockpile, the particles are already treated and remain in the material fl ow.”


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