This model is discontinued.
The DRW-800 dredger and the GRAT 800/40 pump is designed for use in mining and processing plants, mining and metallurgical plants, thermal power plants, cement plants, diamond mining and gold mining enterprises, technological lines for crushing, mineral processing and similar industries.
Provided that the length of the pipeline is 200 meters and the conventional geodetic lift is not more than 5 meters, this model nominally produces 120 cubic meters per hour or 1,200 cubic meters per 10 hours of operation. The density of sand is 1.3 tons per cubic meter, the weight of extracted sand is 1560 tons.
The extraction costs of 1560 tons of sand will amount to 1,600 kW/h in 10 hours. The nominal consumption of diesel fuel for 10 hours of operation is 1,600 kW/h x 0.226 l/kWh = 361.6 liters. From this calculation, we conclude: To extract 1560 tons of sand, 361.6 liters of diesel fuel is needed. The cost of mining one ton of sand is 361.64 liters/1560 tons = 0.232 liters per ton.
|Water column height||40||m;|
|The Production of the dry residue (nominal)||120||m³/h|
|The Production of the dry residue (maximum)||240||m³/h|
|Power pump for pumping pulp||160||kW|
|Pulp transport length (nominal)||700||m|
|The depth of the development (minimum)||0,4||m|
|The depth of the development (maximum)||8||m|
|Diameter solids (max)||120||mm|
|Diameter pressurized slurry pipeline||315||mm|
|The length of the dredger||13||m|
|The width of the dredge||2.4||m|
|Overall width with pontoons||5.4||m|
|The height of the dredger||2.3||m|
|Onboard power supply||12/24||V|
|Engine 250 kW (Diesel Engine Weichai/Ricardo/SDEC)||1||pcs|
|Pump GrAU-800/40* or Warman 10/8″||1||pcs|
|Active milling cutter (increased productivity for light soil)||1||pcs|
|Auxiliary pump (ejector) 33 m/cube per hour feed at a head of 70 m||1||pcs|
|Hydraulic motion control||1||pcs|
|Hydraulic cylinder lifting main suction pipe||2||pcs|
|Fixing of the dredger at the work site of the anchor, hydraulic winches||3||pcs|
|Anchors Danforth 50 kg||3||pcs|
|Drive of a milling cutter (hydraulic motor)||1||pcs|
|Fuel tank 1000 liters||1||pcs|
|The battery (200 А/h)||2||pcs|
|Screw (loosening soil)|
|Water cannon for pulp|
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