Ototec Mineral Beneficiation

8/3/2019 Ototec Mineral Beneficiation

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Mineral Processing – Hydrometallurgy

Jaakko Leppinen



© Outotec Oyj CMD 2008 Seville, Spain2

Mineral Processing - Hydrometallurgy

BIO

CRUSHING GRINDING FLOTATION

HEAP LEACHINGOF ORE

ORE

SOLUTION PURIFICATION

METAL

CONCENTRATE

FLOTATION

TAILINGS

REDUCTION

LEACH RESIDUE

ORELEACHING

CONCENTRATELEACHING




Mineral Processing - HydrometallurgyCRUSHING GRINDING FLOTATION

HEAP LEACHINGOF ORE

ORE

SOLUTION PURIFICATION

METAL

CONCENTRATE

FLOTATIONTAILINGS

REDUCTION

LEACH RESIDUE

ORELEACHING

CONCENTRATELEACHING

ENVIRONMENTAL ISSUES

ENERGY CONSUMPTION

WATER CONSUMPTION

CHEMICALS CONSUMPTION

TAILINGS MANAGEMENT

- SOLID RESIDUES

- WATER RECYCLING

- CHEMICALS




Energy-efficient grinding technologyEfficiency in the grinding circuit

improves the overall performance ofthe concentrator.

Outotec provides Advanced ControlTools (ACT) for grinding circuits:

Desired particle size distribution isachieved and maintained.Throughput of the mill is optimized.

Outotec Skimmair® flotation

technology with grinding circuitThis ensures cost-effective, trouble-free and efficient operation ofgrinding circuit.




Advanced Flotation technologyOutotec sets new standards for

Superior flotation performance:aeration, mixing and frothremoving.

Low operating and maintenancecosts and high equipmentreliability.

The wide range of available cellsizes, including the worldlargest operating flotation cell(TC- 300) permits plant designto be compact, economical andefficient.




PRINCIPLE OF FLOTATION

CONCENTRATE

AIR

VALUABLE MINERALGANGUE MINERAL

ORE

FROMGRINDING

REAGENTS CONTROL OFCONDITIONS

FROTH WITH MINERALS

CONDITIONING STAGE FLOTATION STAGE

TAILING




Leading Thickener Technology

The revolutionary SUPAFLO® High Rate Thickener concept has pioneered andredefined the methods of clarification and thickening around the world over the pastdecade.




PRINCIPLE OF THICKENING

1 2

THICKENED UNDERFLOWTO TAILINGS

SOLUTIONTO RECYCLEORDOWNSTREAMPROCESS

SLURRY (SOLIDS + SOLUTION)




PRINCIPLE OF PASTE THICKENING

ORDINARY THICKENER PASTE THICKENER

PASTE

THICKENED SLURRY




Paste thickeningOutotec leads the industry with thickening

technologies for base metals and mineralsslurries, using:High rate,High Compression,Paste Thickeners.

Why use Paste Thickeners?To efficiently use water (water shortage inmine-sites).Underflow (paste/solids) does not requirefiltration.De-watering a slurry to a paste will lead toenvironmentally sustainable tailingsmanagement.Paste might be used for refilling degradedmine-areas (rehabilitation of mine-sites).




Outotec hydrometallurgical processes

StandardHydroCopper ®

Zn hydrometallurgy (directzinc concentrate leach

technology)SX technology

Customer specific tailoredDifferent unit processes(known performance)Equipment selection




The HydroCopper ®

- process• HydroCopper® is a chloride

medium based leaching process:• Copper concentrates.• Secondary copper raw materials.

• Operating at atmospheric pressureand T = 80 -100°C.

• Final product copper wire rod.• No concentrate transportation!!




Customized process solutionWhat is a customized process

solution?Utilization of existing knowledgeand references.Adaptation of the knowledge fora customer specific case.

Customized process to treatcustomer specific raw material

LeachingImpurity controlResidue controlProduct control.

Environmental aspects takeninto account.




Mine to metal concept

MINE CONCENTRATOR HydroCopper ® END PRODUCT

No concentrate transportation.Local sosio-economic impacts.




SummaryOur customers want to produce metals competitively.

Only those producers survive in the long run who usesustainable technologies.Profitability and environmentally sound technologies

can and must go hand in hand.Technology development is the key.It is important to evaluate the whole production chain,

from ore to metal.

© Outotec Oyj CMD 2008 S ill S i17




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