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LIBERATION, SEPARATION, EXTRACTION
STAGE 1 - Blasting STAGE 2 - Primary Crushing STAGE 3 - Secondary Crushing STAGE 4 - Grinding STAGE 5 - Separation by size STAGE 6 - Separation by values STAGE 7 - Extraction of values
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What is an Ore? Mineralized rock that can be mined/processed
At a time (temporal) At a place (spatial) At a profit (economic) Waste rock can become an ore Tailings can become an ore
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Drilling and Blasting Create a top size suitable for transportation
Begin the process of Liberation Factors Drill hole diameter Drill hole spacing and pattern Explosive type Delay system
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Drilling and Blasting
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Influence of Blasting Practices
S. Morrell and W. Valery, “Influence of Feed Size on AG/SAG Mill Performance”. SAG 2001, Vancouver, Canada, pp Morrell, S., “The Influence of Feed Size on Autogenous and Semiautogenous Grinding and the Role of Blasting in its Manipulation”, Proc. 22nd International Mineral Processing Congress, Eds.: L.Lorenzen and D.J. Bradshaw, p
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Influence of Blasting Practices
S. Morrell and W. Valery, “Influence of Feed Size on AG/SAG Mill Performance”. SAG 2001, Vancouver, Canada, pp Morrell, S., “The Influence of Feed Size on Autogenous and Semiautogenous Grinding and the Role of Blasting in its Manipulation”, Proc. 22nd International Mineral Processing Congress, Eds.: L.Lorenzen and D.J. Bradshaw, p
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Order of Processing Blasting Primary Crushing Secondary Crushing
Grinding Regrinding
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Crushing Machines
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Crushing Machines
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HPGR – high-pressure grinding rolls
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High-Pressure Grinding Rolls
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Jaw Crusher
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Gyratory Crusher
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Symons Cone Crusher
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Cone Crusher Liners
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Vibrating Screen
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Secondary Crushing Plant
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Alternate Secondary Crushing Plant Design
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Open Circuit Crushing
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Grinding Mills
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Grinding Mills Rod Mill – opened up for maintenance Ball Mill – overflow type
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Conical Ball-Mill
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Grinding Mills Bingham Canyon Grinding Mills
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Tube Mill
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Rod-Mill Central Peripheral Discharge
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Rod-Mill End Peripheral Discharge
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Rod-Mill Overflow Discharge
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Grinding and Cyanide Leaching
Musslewhite Mine, Ontario
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Cyclo-Paks
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Spiral and Rake Classifiers
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Rake Classifier
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Rake Classifier
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Spiral Classifiers
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Cyclone and Particle Recovery
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Size Distribution of Soils
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Size Distribution Curves
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Bimodal Size Distribution
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Hydrocyclone
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Separator Partition Curves
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Stoke’s Law
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ABC Grinding Circuit
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Bond Work Index Formula
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Size Ranges in Separators
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Electronic Sorting
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Electrostatic Separation
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Cross-Belt Magnetic Separator
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Drum Magnetic Separator
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2-stage Drum Magnetic Separator
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Pinched Sluice
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Riffles in a Sluice
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Humphrey Spiral – iron ore
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Particle Distribution in Spiral Trough
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Reichert Cone separator
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Fluid (pulp) Flow in a Cone Separator
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Shaking Table
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Statification on a Shaking Table
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Gold on a Shaking Table
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Jigging - stratification
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Centrifugal Concentrator – the Falcon
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Flotation Cell
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Flotation Cell Agitator Design
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Flotation Cell - Rotors
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Separation Circuit
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Copper Flotation Circuit
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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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Copper – Downstream Processing
Kidd-Creek Smelter flowsheet
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Copper Ores – Concentrating
Simplest Copper Flotation Circuit
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Copper Ores – Concentrating
Copper/Gold Flotation Circuit
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Copper/Moly Ores – Concentrating
Copper/Moly Flotation Circuit
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Copper Ores – Concentrating
Multiple Sulfide Differential Flotation Circuit
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Copper Ores – Concentrating
Mixed Oxide/Sulfide Copper Flotation Circuit
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Copper Ores – Concentrating
Copper Oxide Processing to final metal
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Copper Ores – Concentrating
Copper Oxide Processing - LPF
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Copper Ores – Concentrating
T.O.R.C.O. Processing of Copper Ores
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Copper Anode Casting Wheel
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Thickener - tailings
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Thickeners - zones
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Thickener – Area Calculation
where A = thickener area (m2) W = dry solids mass flow (tph) F = liquid:solid ratio of feed D = liquid:solid ratio of discharge R = settling rate (m/hr) S = liquid S.G. (kg/L)
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Marine Tailing Disposal
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Drum Filters
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Disk Filter
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Pressure Filter - Larox
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Rotary Dryers
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Rotary Kiln
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Mill Control Room Carlin Mine, Nevada
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Questions?
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Dissolution of Gold in Cyanide Elsner's Equation
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Precipitation of Au from Solution
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Downstream Processing
Gold processing options
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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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Downstream Processing
Uranium Ore 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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Downstream Processing
Coal processing
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