Jet Suction Dredgers
A jet suction-type dredger is often the ideal solution for dredging relatively loose and free-flowing material. The ROHR-IDRECO jet suction dredgers are electric driven (diesel/diesel-electric drives are optional), and our advanced automation and monitoring software, developed in-house, ensures the highest efficiency and the lowest possible energy consumption. Further benefits include reduced wear and tear on pumping equipment, a low carbon footprint and minimal noise pollution.
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Draga Dredger
The standard DRAGA dredger range up to a digging depth of 55 metres is built fully containerised to ensure low-cost transportation worldwide and allow delivery to inland (sand and gravel) mines and hydroelectric locations with often limited accessibility. Later relocation of dredgers to other sites is facilitated through our iPlug-and-Dredge Concept.
The modular design ensures industry-leading delivery times and a continuous availability of parts. Full customization is possible through extensive choices on for example the iPump® type, excavating grinders and other add-ons, and levels of automation, monitoring and visualisation.
ROHR-IDRECO can install a measurement and visualisation system to optimise the mining production. This is done using DGPS receivers, several sonar sensors (pressure, inclinometers etc.) and a proprietary software system that measures the operating point of the suction head or grab. This virtual real-time system helps minimise any dredgeable material left behind by the operator. In combination with the revolutionary ROHR-IDRECO iDredge system, the dredger can even be turned into a (semi) automatic and remote-controlled machine.
Draga 1000
- Max. Dredging depth: 10 m
- Nominal Mixture capacity: 900 – 2400 m³/h
- Available Suction Diameter: 300 – 450 mm
- Available Discharge Diameter: 250 – 400 mm
- Available Dredge Pump Sizes: 250 / 300 / 350 / 400 mm
- Min. Spherical Pump Passage: 160 mm
- Transportable by ten shipping containers
- Efficient Electric Drive System
- Small Environmental Footprint
- Low Noise & Vibration Level
- One-man Operation
Electric-driven: lowest cost per cubic meter. No emission, minimal noise pollution.
In-house iPump® line: developed through sixty years of experience in sand- and gravel extraction. Wear resistant for increased life span, optimal suction characteristics, adaptable for a wide range of tasks.
In-house iDredge® control- and automation system: ensuring increased efficiency and reduced power consumption. Optional: remote controlled dredge systems and data collection for automated analyses on performance.
Containerized for low-cost transportation worldwide and inland delivery to remote locations. Relocation facilitated through the iPlug-and-Dredge Concept. Modular design for industry-leading delivery times and continuous availability of spare parts.
Draga 1800
- Max. Dredging depth: 18 m
- Nominal Mixture capacity: 900 – 2400 m³/h
- Available Suction Diameter: 300 – 450 mm
- Available Discharge Diameter: 250 – 400 mm
- Available Dredge Pump Sizes: 250 / 300 / 350 / 400 mm
- Min. Spherical Pump Passage: 160 mm
- Transportable by three shipping containers
- Efficient Electric Drive System
- Small Environmental Footprint
- Low Noise & Vibration Level
- One-man Operation
Electric-driven: lowest cost per cubic meter. No emission, minimal noise pollution.
In-house iPump® line: developed through sixty years of experience in sand- and gravel extraction. Wear resistant for increased life span, optimal suction characteristics, adaptable for a wide range of tasks.
In-house iDredge® control- and automation system: ensuring increased efficiency and reduced power consumption. Optional: remote controlled dredge systems and data collection for automated analyses on performance.
Containerized for low-cost transportation worldwide and inland delivery to remote locations. Relocation facilitated through the iPlug-and-Dredge Concept. Modular design for industry-leading delivery times and continuous availability of spare parts.
Draga 3000
- Max. Dredging depth: 30 m
- Nominal Mixture capacity: 900 – 2400 m³/h
- Available Suction Diameter: 300 – 450 mm
- Available Discharge Diameter: 250 – 400 mm
- Available Dredge Pump Sizes: 250 / 300 / 350 / 400 mm
- Min. Spherical Pump Passage: 160 mm
- Transportable by road
- Efficient Electric Drive System
- Small Environmental Footprint
- Low Noise & Vibration Level
- One-man Operation
Electric-driven: lowest cost per cubic meter. No emission, minimal noise pollution.
In-house iPump® line: developed through sixty years of experience in sand- and gravel extraction. Wear resistant for increased life span, optimal suction characteristics, adaptable for a wide range of tasks.
In-house iDredge® control- and automation system: ensuring increased efficiency and reduced power consumption. Optional: remote controlled dredge systems and data collection for automated analyses on performance.
Relocation facilitated through the iPlug-and-Dredge Concept. Modular design for industry-leading delivery times and continuous availability of spare parts.
Draga 3500
- Max. Dredging depth: 35 m
- Nominal Mixture capacity: 2000 – 4000 m³/h
- Available Suction Diameter: 400 – 500 mm
- Available Discharge Diameter: 350 – 450 mm
- Available Dredge Pump Sizes: 350 / 400 /450 mm
- Min. Spherical Pump Passage: 180 mm
- Transportable by eight shipping containers
- Efficient Electric Drive System
- Small Environmental Footprint
- Low Noise & Vibration Level
- One-man Operation
Electric-driven: lowest cost per cubic meter. No emission, minimal noise pollution.
In-house iPump® line: developed through sixty years of experience in sand- and gravel extraction. Wear resistant for increased life span, optimal suction characteristics, adaptable for a wide range of tasks.
In-house iDredge® control- and automation system: ensuring increased efficiency and reduced power consumption. Optional: remote controlled dredge systems and data collection for automated analyses on performance.
Containerized for low-cost transportation worldwide and inland delivery to remote locations. Relocation facilitated through the iPlug-and-Dredge Concept. Modular design for industry-leading delivery times and continuous availability of spare parts.
Draga 4500
- Max. Dredging depth: 45 m
- Nominal Mixture capacity: 2000 – 4000 m³/h
- Available Suction Diameter: 400 – 500 mm
- Available Discharge Diameter: 350 – 450 mm
- Available Dredge Pump Sizes: 350 / 400 /450 mm
- Min. Spherical Pump Passage: 180 mm
- Transportable by ten shipping containers
- Efficient Electric Drive System
- Small Environmental Footprint
- Low Noise & Vibration Level
- One-man Operation
Electric-driven: lowest cost per cubic meter. No emission, minimal noise pollution.
In-house iPump® line: developed through sixty years of experience in sand- and gravel extraction. Wear resistant for increased life span, optimal suction characteristics, adaptable for a wide range of tasks.
In-house iDredge® control- and automation system: ensuring increased efficiency and reduced power consumption. Optional: remote controlled dredge systems and data collection for automated analyses on performance.
Containerized for low-cost transportation worldwide and inland delivery to remote locations. Relocation facilitated through the iPlug-and-Dredge Concept. Modular design for industry-leading delivery times and continuous availability of spare parts.
Draga 5500
- Max. Dredging depth: 55 m
- Nominal Mixture capacity: 2000 – 4000 m³/h
- Available Suction Diameter: 400 – 500 mm
- Available Discharge Diameter: 350 – 450 mm
- Available Dredge Pump Sizes: 350 / 400 / 450 mm
- Min. Spherical Pump Passage: 180 mm
- Transportable by thirteen shipping containers
- Efficient Electric Drive System
- Small Environmental Footprint
- Low Noise & Vibration Level
- One-man Operation
Electric-driven: lowest cost per cubic meter. No emission, minimal noise pollution.
In-house iPump® line: developed through sixty years of experience in sand- and gravel extraction. Wear resistant for increased life span, optimal suction characteristics, adaptable for a wide range of tasks.
In-house iDredge® control- and automation system: ensuring increased efficiency and reduced power consumption. Optional: remote controlled dredge systems and data collection for automated analyses on performance.
Containerized for low-cost transportation worldwide and inland delivery to remote locations. Relocation facilitated through the iPlug-and-Dredge Concept. Modular design for industry-leading delivery times and continuous availability of spare parts.