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Pump U900/90 for its direct purpose to pump coal slurry, called coal pumps, and is mainly used for hydro-transportation of coal and sludge in mines and concentrators. In addition, the coal mine U900/90 has found its widespread use in quarries, the metallurgical, mining and processing and cement industries, as well as in the transport of other bulk materials.
General characteristics:
| Production | 900 | m³/h |
| Water column height | 90 | m |
| The Production of the dry residue (nominal) | 135 | m³/h |
| The Production of the dry residue (maximum) | 300 | m³/h |
| Power pump for pumping pulp | 315 | kW |
| Powerpoint | 300 | kW |
| Pulp transport length (nominal) | 900 | m |
| The depth of the development (minimum) | 0,4 | m |
| The depth of the development (maximum) | 12 | m |
| Diameter solids (max) | 200 | mm |
| Diameter pressurized slurry pipeline | 250 | mm |
| Area of use | River |
Specifications:
| The length of the dredger | 13 | m |
| The width of the dredge | 2.4 | m |
| Overall width with pontoons | 8 | m |
| The height of the dredger | 4 | m |
| Weight dredger | 16 | ton |
| Internal supply | 12 | V |
| Outdoor supply | 12 | V |
| Onboard power supply | 12/24 | V |
Installed Hardware:
| Engine 300 kW (specific consumption of diesel fuel 200 g/kWhh) | 1 | pcs |
| Pump U-900/90* | 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 |
| Reversible propeller 35 kW (dredger drive drive) | 2 | pcs |
| Hydraulic motion control | 1 | pcs |
| Hydraulic cylinder lifting main suction pipe | 2 | pcs |
| Anchor piles (length 8 meters) | 2 | pcs |
| Fixing of the dredger at the work site of the anchor, hydraulic winches | 3 | pcs |
| Anchors | 3 | pcs |
| The drive of the main pump GRT 800/70 (hydraulic motor) | 1 | pcs |
| Drive of a milling cutter (hydraulic motor) | 1 | pcs |
| Floating slurry pipeline D-200 or 250 mm | 100 | m |
| Auxiliary crane-beam | 1 | pcs |
| Fuel tank 1000 liters | 1 | pcs |
| Technical water tank 500 liters | 1 | pcs |
| The battery (200 А/h) | 2 | pcs |
| Economic indicators |
| 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 135 cubic meters per hour or 1,350 cubic meters per 10 hours of operation. The density of sand is 1.3 tons per cubic meter, the weight of extracted sand is 1755 tons. The extraction costs of 1755 tons of sand will amount to 2,500 kWh in 10 hours. The nominal consumption of diesel fuel for 10 hours of operation is 2,500 kW x 0.200 l/kW = 500 liters. From this calculation, we conclude: To extract 1755 tons of sand, 500 liters of diesel fuel is needed. The cost of mining one ton of sand is 500 liters/1755 tons = 0.285 liters per ton. |
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