Bucket Ladder Dredgers
This type of dredger is also designed for the extraction of sand and gravel from wet mining pits and comes in both a land-based and floating type. The dredging depth of bucket ladder dredgers varies from 0 to 12 (or 14) metres for the land-based models and from 6 to 24 metres for the floating models. Similar to floating clamshell dredgers, floating bucket ladder dredgers are equipped with an on board processing plant comprising a double or single deck screening machine, crusher, fine sand recovery, conveyor belt or hydraulic transportation to shore.
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Landbased bucket ladder dredger
- Crawler type excavator
- Stockpile conveyor, optional: slewing conveyor belt
- Oversize separation with screen
- Dewatering screen
- Bin for dumper loading
K 75 R
- Bucket capacity: 75 l
- Capacity: 36 – 144 m³/h
- Chain driving power: 45 kW
K 125 R
- Bucket capacity: 125 l
- Capacity: 60 – 240 m³/h
- Chain driving power: 55 kW
K 175 R
- Bucket capacity: 175 l
- Capacity: 84 – 340 m³/h
- Chain driving power: 75 kW
Floating bucket ladder dredger
- Caterpillar chain
- frequency controlled drive motors, dimensioning depending on dredging depth
- dewatering screening machine
- sand processing
- transportation by conveyor belt
KS 125
- Bucket capacity: 125 l
- Capacity: 20 – 240 m³/h
- Chain driving power: 55 kW
KS 175
- Bucket capacity: 175 l
- Capacity: 80 – 330 m³/h
- Chain driving power: 110 kW
KS 225
- Bucket capacity: 225 l
- Capacity: 100 – 430 m³/h
- Chain driving power: 160 kW
KS 250
- Bucket capacity: 250 l
- Capacity: 120 – 480 m³/h
- Chain driving power: 2 x 90 kW
KS 350
- Bucket capacity: 350 l
- Capacity: 170 – 670 m³/h
- Chain driving power: 2 x 110 kW
KS 400
- Bucket capacity: 400 l
- Capacity: 190 – 760 m³/h
- Chain driving power: 2 x 160 kW