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Wirtgen Surface Miner
Surface Mining TechnologyAn economic concept
for blast-free,highly selective Mining
Ulaanbaatar, Mongolia, 9th February 2012
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The Mining Conceptand
The Operating Method
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Slewing ringConveyor counterweight
Drive unit with diesel engine Operator‘s cabin
Slewing and height-adjustable
discharge conveyor
Height-adjustable crawler track
Scraper blade with primary conveyor
Mechanically driven cutting drum
Steered and height-adjustable crawler track
Working direction
A Surface Miner - here’s how it works
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Mining sequences
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Direct / indirect loading options
Sidecasting mode
Front loader from behind Rear loader-loading from the side
Windrowing mode
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Performance ranges
Unconfined compressive strength (UCS) of material in MPa (Mega pascal)
Bank
Cub
ic M
eter
(bm
³) p
er h
our
10 20 30 40 50 60 70 80 90 100 110 120
2200 SM – windrowing
2500 SM
2200 SM – conveyor loading
2200 SM / 3800 SM – Windrowing
4200 SM
Wirtgen product range
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The Applications for Surface Miners
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The following jobs are not longer required:
Cut, crush, load in one operation with one machine
Capabilities of Surface Miners
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• Environmentally friendly:- No dust generation- No noise or air overpressure- No ground vibrations
• Improved safety:- No explosives - No fly rocks
• Better exploitation:- Mining up to the tenementboundary
Mining without blasting
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PartingCoalPartingCoalParting
- High quality ROM-products- Reduced processing cost (less washing,
less crushing)- Reduced waste material handling- Better exploitation of deposit- Better stripping ratio
Highly-selective mining
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CoalPartingCoalParting
Highly-selective mining
- High quality ROM-products- Reduced processing cost (less washing,
less crushing)- Reduced waste material handling- Better exploitation of deposit- Better stripping ratio
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PartingCoalParting
Highly-selective mining
- High quality ROM-products- Reduced processing cost (less washing,
less crushing)- Reduced waste material handling- Better exploitation of deposit- Better stripping ratio
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CoalParting
Highly-selective mining
- High quality ROM-products- Reduced processing cost (less washing,
less crushing)- Reduced waste material handling- Better exploitation of deposit- Better stripping ratio
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Selective mining
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Blending by cutting on a slope
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Gradation in gypsum
Grain size distribution - limestone, gypsum, phosphate
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Steep and stable slope cutting
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Advantages: Small particles in constant flow do not harm truck bodies.No tire and chassis damages since trucks travel on even and solid ground.
Smooth truck loading
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Selective Mining of
Ligniteat
North American CoalRed Hills Mine, Mississippi
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Trial operation in Rio Tinto’s Iron Ore Pilbara Iron Ore Operation
Bench width: 56 mBench length: 800 m
Selective Mining of thin lignite seams
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Trial operation in Rio Tinto’s Iron Ore Pilbara Iron Ore Operation
No. of seams: 6Seam thickness: 0,6 to 2 mStripping ratio: 13:1
Selective Mining of upper two lignite seams
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Trial operation in Rio Tinto’s Iron Ore Pilbara Iron Ore Operation
Selective supervision – camera on Surface Miner
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Trial operation in Rio Tinto’s Iron Ore Pilbara Iron Ore OperationLoading 135 t in approx. 2:45 min = 2945 t/h
Continuous truck loading
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Trial operation in Rio Tinto’s Iron Ore Pilbara Iron Ore Operation
The Benefits at a glance:Highly selective mining of lignite and interburden
- High calorific ROM lignite- High exploitation = low stripping ratio
Production of minus 150 mm particle sizeCutting performance: 3.000 t/h
Wirtgen Surface Miner 4200 SM on the move
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(379 machines sold as per December 31, 2011)
Surface Miner application (by rock type)
Salt - 27 Machines
Coal - 86 Machines
Limestone - 156 Machines
Bauxite - 10 Machines
Caliche, Dolomite, Mudstone, Oilshale, Pegmatite, Shale, Tuff - 11 Machines (total)
Iron Ore - 49 Machines
Gypsum - 26 Machines
Phosphate - 5 Machines
Granite - 5 MachinesKimberlite - 4 Machines
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58Australia
133Asia
42 East Europe
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North Africa
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South Africa8
South America
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North America
51West Europe
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Central America
Surface Miner sold worldwide (as per Dec. 31, 2011)
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Conclusion
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Simple Mining (cut, crush, load in one operation)= Save Money (economic Mining= one machine for the entire job)= Sized Material production (no crushing)= Smooth Material flow (loading of common trucks) Selective MiningSafe Mining (no blasting)Sealed Mining (cutting drum entirely covered, no flying rock, no dust)Surface Manipulation (+ Even floor profiles for easy loading
+ Safe traffic ability+ Surface water drainage)
Slope Manipulation (precise, steep and stable slopes )
For optimisation of mining and processing Wirtgen Surface Miners offer the following benefits
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With our customers around the world
Thank you for your kind attention!