The Rohr-Idreco dredge was installed on an existing sand and gravel operation. The customer chose the Rohr Gantry Type Clamshell dredge to increase production and digging depth. Rohr dredges are known for their easy operation and low energy consumption. This 10.5 cu.yd. (8m3) Clamshell is an electric dredge with a digging depth of approx 200 ft (60m) and production capacity up to 400 tph. The dredge is equipped with an on-board Fine Sand Recovery System, High Frequency Fine Sand Dewatering Screen Cyclone and Crusher. The Rohr Gantry Type Clamshell has fully automated controls (to support a one-man operation) and very low power requirements, as well as a DGPS/Sonar system for improved material recovery. Rohr also supplied the approx. 400 ft. (240m) of floating conveyors that delivers the separated and dewatered material to the main conveyor belt system going to the plant.
Rohr’s Gantry Type Clamshell dredges have a standard digging depth of up to 200 ft. (60m). Production ranges from 300 to over 2,000 tph, depending on material and digging depth.
Rohr-Idreco Dredge Systems is the world leader in bucket ladder, clamshell, and jet suction dredge applications and technology for the sand and gravel industry, mining and dam restoration projects.
Rohr-Idreco specializes in deep digging applications up to 330 feet (100m) deep.