Published in Rock Products magazine, September 2014
As a dredge moves farther away from the discharge point, the pump speed is increased to maintain a proper slurry velocity within the pipeline. Once maximum pump speed has been achieved, further increasing the discharge distance causes the cost-per-ton of material moved to rise, while production declines. Of course, there is always a cost involved in pumping the water/material slurry and the associated fuel or power required to do so. Because of this, the idea of adding a booster pump to the dredging operation in order to reduce costs may seem counterintuitive.