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IPJ and ILR Update New Developments Tim Bell Gekko Systems May 2010

IPJ and ILR Update New Developments Tim Bell Gekko Systems May 2010. ALTA10. Outline. Brief introduction to Gekko Systems The InLine Pressure Jig (IPJ) and recent developments The InLine Leach Reactor (ILR) and recent developments Case Studies. ALTA10. The Company.

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IPJ and ILR Update New Developments Tim Bell Gekko Systems May 2010

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  1. IPJ and ILR Update New Developments Tim Bell Gekko Systems May 2010 ALTA10

  2. Outline Brief introduction to Gekko Systems The InLine Pressure Jig (IPJ) and recent developments The InLine Leach Reactor (ILR) and recent developments Case Studies ALTA10

  3. The Company • Offices: Ballarat, Perth, Johannesburg, Vancouver, Santiago • Agents: Russia, Peru, Argentina, Brazil • 400 units installed in over 40 countries worldwide ALTA10

  4. IPJ Technology Targets >100 µm free gold and > 200 µm sulphides Continuous mass pull 5 – 30% Best in circulating loads of crushing and grinding mills Pre-concentration IPJ Development. Why? ALTA10

  5. IPJ Developments – Liberation Recovery Recover the mineral as soon as it is liberated – lower energy cost Coarse Gravity-Flotation (Python Circuit) ALTA10

  6. IPJ Developments – Python • Fully assembled plant • Fast Installations and commissioning ALTA10

  7. IPJ Developments – Multiple IPJs Single jig limited to 100 tph solids Modular pre-assembled systems ALTA10

  8. Pirquitas Pre-Concentration Module ALTA10

  9. IPJ - Automation • Automatic start and stop sequence operation • Provides monitoring of streams and reaction to process problems • Enables automatic mass balancing ALTA10

  10. IPJ – Integration into circuits • Through bed jigging • Ceramet ragging SG 2 to 5.0 • Gravity feed or pump feed • Direct coupled pumps • Pressure monitoring and dump valves • Polyurethane piping spools ALTA10

  11. ILR - Technology • Slow rolling drum 1-2 rpm • Standard reagents only • High dO levels Up to 10 ppm using H2O2 as the oxidant and up to 25ppm when using O2 • Batch Leach reactors. Models to treat batches of 900 - 24,000 kg • Continuous leach reactors. Models up to 2.1 t/hr installed and Super ILR available up to 9 t/hr ALTA10

  12. Batch ILR – Improvements ILR rolling drum technology – The most efficient chemistry! • Single solution cone, single pump • Automation provides largely hands free operation • PLC program optimisation ALTA10

  13. Batch ILR – Sizing Tool • GRG Testwork and/or Plant Survey Data • AMIRA P420 Gravity Model – Estimates the size of a gravity circuit required • The model provides a clear picture of the recovery gain by increased % of product feed. • In a typical grinding circuit application the tool will direct you as to which is the more appropriate stream to feed the BCC. • ILR can then be selected to match the BCC yield ALTA10

  14. Continuous ILR – Improvements ALTA10

  15. Continuous ILR – High Tonnage Treatment Option ALTA10

  16. ALTA10 Continuous ILR – Improvements

  17. ALTA10 Gravity Box

  18. Gravity Box • Fully engineered package of screen, concentrator, ILR, frames, piping, electrical, automation, installation and commissioning. • Pre-assembled during fabrication to ensure rapid installation. • Suitable for new plant or existing upgrade. • Standard designs at various tonnages completed and repeatable (drawing packages and or complete assembly options available) • Specifically designed to assist engineers and operators in meeting tight deadlines in a climate that is seeing more gold projects fast tracked, juniors starting operations on strict capex budgets and engineers pushed on lead times.

  19. Batch ILR Case Study – St Ives • ILR3000BA in operation since 2003 • >98% ILR Leach recovery • Overall gravity recovery 20-30% • ILR produces >100k oz’s per annum • ILR Impacts overall recovery by approximately 2.5% • High Availability – running daily since 2003 • High Recovery (Increased gravity recovery by 8%) • Integral part of the overall plant • ILR3000BA replaced shaking table ALTA10

  20. Batch ILR Case Study – Target • ILR100BA in operation since 2002 • >98% ILR Leach recovery • Overall gravity recovery ~50% • ILR Impacts overall recovery positively • High Availability • High Recovery • Integral part of the overall plant • Has eliminated historical security concerns St Ives, Agnew, Kelian & Target ILR Batch units formed the foundation of batch IC technology to grow to more than 150 installations of the unit process globally in <10 years! ALTA10

  21. IPJ Case Study

  22. IPJ Case Study • Gravity circuit consists of IPJ’s in HPGR and ball mill combination grinding circuit, IPJ concentrate to Gekko ISPs, flotation scavenging. • 86-92% Au gravity recovery • 97-99% Au overall recovery ALTA10

  23. ALTA10 End

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