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Published byChristopher Stripe Modified over 9 years ago
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MINE LIFE CYCLE, DOWNSTREAM PROCESSING, AND SUSTAINABILITY
STAGE 1 - Exploration and Assessment STAGE 2 - Construction STAGE 3 - Operation STAGE 4 - Closure
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MINE LIFE CYCLE, DOWNSTREAM PROCESSING, AND SUSTAINABILITY
STAGE 1 - Exploration and Assessment (1-10 years) Exploration - Geophysics Exploration - Drilling (1/10) Geology - Analytical and Mineralogical Assessment Economic Feasibility Assessment (1/10) Orebody Modeling (1/10) Mine Planning and Metallurgical Testwork
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3-D Orebody Model for Mine Planning
INCO's Research Mine at Sudbury, Ontario
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Underground LHD Campbell Mine, Ontario
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Remote-LHD Olympic Dam Mine, Australia
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Mine Life Cycle (continued)
STAGE 2 - Construction( years ) Mine Shaft-sinking & tunnel/stope development (U/G) Adit & tunnel/stope development (mountain-top) Top soil removal, key-cut, haul road development (Open-Pit) Plant Site Preparation, Foundations, Construction of buildings Procurement and Installation of Equipment Waste and Tailing Disposal Site Selection and Preparation Construction of Initial Coffer Dam for tailing disposal
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Open Pit Mine Bingham Canyon Mine
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Open Pit Mining Shovel Loading - Porgera Mine, Papua New Guinea
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Strip Mining Coal Mine Shovel-Truck Operation
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200 T Haulage Truck
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Open Pits are Colorful Florida Phosphate Mining
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Diamond Pipe Deposit
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Ekati Diamond Mine Kimberlite Pipe Deposit
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What its all about at Ekati!
Diamonds are forever!
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Polar Diamond Certificate
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Ekati's Polar Diamond
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Mill Complex Bingham Canyon Mill
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Secondary Crushing Plant
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Grinding Mills Bingham Canyon Grinding Mills
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Grinding Mills
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Mill Control Room Carlin Mine, Nevada
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Separation Circuit
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Mine Life Cycle (continued)
STAGE 3 - Operation ( years ) Mine Blast, Load, Haul, Dump Transport (hoist, convey, truck, rail), Stockpile Safely Store Waste (on site or in-mine) Mill Crush, Grind (comminution) Physical Separation (maybe chemical) (beneficiation) Thicken and Filter (dewater) Safely Store Tailing
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Mine Life Cycle (continued)
STAGE 3 - Operation ( years ) Waste Disposal Dump Contour, Spread top soil Hydro-seed and plan for final drainage Tailing Disposal Plan for Lifts as Tailing Dam builds Control Water Levels Recover water for recycle Revegetate dam walls
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Revegetation Hydro-Seeding a Waste Dump
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Tailing Dam Reclamation
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Mine Life Cycle (continued)
STAGE 4 - Closure( years ) Mine Flood Pit Seal Underground workings Long-term Acid Rock Drainage plan for waste dumps Mill Salvage Equipment Raze Buildings Contour and reseed site Long-term ARD plan for tailing dam
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Mine/Mill Complex Musslewhite Mine, Ontario
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Downstream Processing
Mine/mill complex produces ore or concentrate or unrefined metal/product product transported by airplane, rail, truck or ship to smelter or refinery if leaching is used at mine/mill, unrefined metal or final product is produced Smelting pyrometallurgical processing (multi-stage) roasting to partially remove/control sulfur content melting to separate oxides from sulfides (flux and slag) oxidation to remove sulfur and iron need SO2 control and slag disposal system
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Downstream Processing
Leaching hydrometallurgical processing vat leach, agitation leach, heap leach, in-situ leach Pressure Oxidation or Biological Leaching solid/liquid separation or ion adsorption process solution purification (solvent extraction/ion exchange) need residue disposal method (dewatering/storage) Refining electrometallurgical processing electrowinning to recover metals from solution electrorefining to purify unrefined metal treatment of slime deposits for PMs recovery
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Downstream Processing
Copper Typical Mine/Mill Treatment
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Downstream Processing
Copper Oxide copper treatment
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Heap Leach Operation Installing a Plastic Membrane Liner
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Zaldivar Copper Heap Leach
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Downstream Processing
Complex Copper Sulfide ore Multiple-product Circuit
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Downstream Processing
Copper copper/molybdenum ore
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Downstream Processing
Copper Mixed Sulfide/Oxide Treatment
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Downstream Processing
Copper/Gold ore Typical Mine/Mill Treatment
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Downstream Processing
Gold processing options
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Downstream Processing
Copper LPF Processing
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Downstream Processing
Copper Processing Refractory Copper Ores
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Downstream Processing
Copper/Lead/Zinc processing
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Downstream Processing
Nickel Typical Mine/Mill Treatment
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Downstream Processing
Nickel Matte Separation processing
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Chuquicamata Mine/Mill/Smelter
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Copper Anode Casting Wheel
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Downstream Processing
Bauxite Al2O3 production
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Downstream Processing
Phosphate ore processing
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Downstream Processing
Uranium Ore processing
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Copper-Uranium Ore Olympic Dam Mine, Australia
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Downstream Processing
Coal processing
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Downstream Processing
Coal processing
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Downstream Processing
Coal processing
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Downstream Processing
Coal processing
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Downstream Processing
Coal processing
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Sustainability Important Factors
Technical Economic Social/Political Environmental Past mining activities focussed on only the first two The latter two have now become equally, if not more important
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Gold Flakes
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Gold Panning
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Gold Flakes
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Grinding and Cyanide Leaching
Musslewhite Mine, Ontario
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Smelting Gold Campbell Mine, Ontario
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Pouring Slag Musslewhite Mine, Ontario
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Pouring Gold Bullion Bars
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What its all about! Gold Bullion
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Samarco Iron Ore Flowsheet
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Samarco Iron Ore Concentrator
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Samarco Iron Ore Pipeline
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Iron Ore Pellets Malmberget, Norway
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Sustainability A Mine must plan for closure before it starts up
A mining company must always consider local communities in all parts of the world As an industry, we must find ways to enhance our image and to influence government decision-making Future methods must reduce the footprint of mining no more open pits waste returned to the mine processing at the face robotics and remote-mining systems
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Sustainability Social/Political Issues
Land Use Government policies The Influence of Activism Environmental concerns Aboriginal peoples and treaties Need for jobs and a diversified economy In BC, the Tatsenshini/Windy Craggy decision has had important long-term impact on Mining Similarly, the Delgamuk decision and Nishka Treaty are important to the future of BC's mining industry
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Sustainability The BC Mining Industry must encourage its members to institute vertical integration policies We need to invest in much more value-added processing (i.e. smelting and refining in BC) Downstream manufacturing industries must be encouraged to develop in BC This will provide the necessary systems to begin significant recycling of metals and other materials in the Pacific North-West
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