The Albion Process at the GPM Gold Project The success of a technology
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1 The Albion Process at the GPM Gold Project The success of a technology Paul Voigt, Glencore Technology (paul.voigt@glencore.com.au) David Walker, Core Resources (dwalker@coreresources.com.au) CIM Conference 2018, Stream: A Vision For The Future - Mineral Processing In Canada
2 GPM Gold The success of a technology Outline 1. Albion Process technology 2. Performance of the Albion Process at GPM 3. Review of global installations 4. The Future for Refractory Gold Projects 2
3 Albion Process Technology 1. Albion Process Technology
4 Albion Process The Albion Process is a combination of mechanical and chemical liberation Ultrafine grinding: IsaMill TM stirred mill: FeS 2 = 80 % passing 10 microns CuFeS 2 = 80 % passing microns Ni 9 Fe 9 S 32 = 80 % passing microns ZnS = 80 % passing microns Oxidative Leaching: Atmospheric pressure leach Gold Applications ph = 5.5 ( Neutral Albion Leach ) Conventional baffled tank (Modular) Sulphate solutions - no chlorides Supersonic oxygen injection 4
5 Gold Albion Process Flowsheet CONCENTRATE Water ULTRAFINE GRIND Oxygen Limestone ALBION LEACH THICKENER Significant detail of Albion Process chemistry and design is available in published literature. CIL LEACH DETOX + TAILINGS DORE 5
6 Albion Process - Low Process Risk All components of the technology are well demonstrated: IsaMill o > 130 IsaMills in operation globally o 17 mills in gold re-grind applications Atmospheric Leach o 6 operating Albion Process Oxidative Leach Pants o Zinc, lead, gold and copper plants o 700,000 tpa of sulphide concentrate currently processed Oxygenation System o >520 HyperSparge units installed in Albion Process and other oxidative leach applications o Extremely successful at high utilisation of oxygen of 90+%, above design
7 2. GPM Project - Albion Process Plant Performance
8 GPM Gold The success of a technology The GPM Gold Project Armenian gold project, owned by GeoProMining LLC Open cut mine - 1 Mtpa ROM, 14.5 Mt reserves Historical grinding & flotation plant (1976) + CIL plant (1997) Oxide ores exhausted 2012, gold now refractory in pyrite 8
9 GPM Gold The success of a technology Refractory gold plant installed 2012 Albion Process technology installation BFS and Pilot Plant completed 2011 by Core Resources Gold recoveries of 95%+ (up from 20% recovery without Albion Process treatment). Low skill workforce Plant tolerates highly variable throughput, sulphur grades and climate 100,000 tpa concentrate, producing 120,000 ozpa gold Plant production at up to 130% of nameplate design 9
10 GPM Albion Process Plant Performance Process Plant Overview Recovered Water PRIMARY MILLING BULK FLOTATION Flotation Concentrate Flotation Tailings CYANIDE LEACH (CIL) PLANT TAILINGS STORAGE IsaMill GRINDING PLANT Oxidised Residue OXYGEN PLANT LIMESTONE PLANT OXIDATIVE LEACHING PLANT Au recovery without Albion = 20% Au recovery with Albion = 95-98% 10
11 GPM Albion Process Plant Performance 3 years of stable gold recoveries 11
12 GPM Albion Process Plant Performance Variable Sulphur Grades (<10% to >30%) 12
13 GPM Albion Process Plant Performance Variable Throughput ( tpd) 13
14 GPM Albion Process Plant Performance Better than Pilot Plant 14
15 GPM Ramp Up Relative McNulty Curve Series 1-2 Performance 15
16 Albion Process Global Albion Installations Process Case Studies 3. Albion Process - Global Installations
17 Albion Process Installations 6 Albion sites 11 ZipaTank 400+ HyperSparge 17
18 GPM Gold Project Albion Process Plant Oxidative Leach Circuit Commodity Gold Location Armenia Client GeoProMining M5000 IsaMill Limestone Grinding Plant Refractory pyrite concentrate 120,000 ozpa gold Commissioned March 2013 Application: Recovery of precious metals from a refractory arsenic bearing deposit within the setting of a soviet era mining complex
19 Las Lagunas Tailings Albion Process Plant M5000 IsaMill being installed Commodity Gold Location Las Lagunas, Dominican Republic Client Panterra HyperSpargers oxygen addition First gold pour from Albion Complex arsenopyrite/gold tailings 80,000 ozpa gold Commissioned in 2012 Application: Albion Process required to recover gold from complex matrix in tails dam (80% recovery, up from 35%), and leave arsenic minerals inert
20 Copper Project Albion Process Plant Oxidative Leach Circuit Commodity Copper Location Africa Client Confidential First Copper Cathode Production Copper Concentrate 10,000 tpa copper cathode >99 % copper recovery Commissioning late 2017 Application: Recovery of copper and cobalt from low and medium grade concentrates in the African region
21 Asturiana de Zinc Albion Process Plant Oxidative Leach Circuit Commodity - Zinc Location Spain Client Glencore Sparging systems Bulk lead/zinc concentrate 4,000 tpa zinc cathode >99 % zinc recovery Commissioned 2010 Application: Recovery of zinc from a bulk concentrate as electrowon cathode with lead and silver in residue for smelting
22 Nordenham Albion Process Plant Oxidative Leach Circuit Commodity - Zinc Location Germany Client Glencore M5000 IsaMill Bulk lead/zinc concentrate 35,000 tpa zinc cathode >99 % zinc recovery Commissioned 2011 Sparging system Application: Recovery of zinc from a bulk concentrate as electrowon cathode with lead and silver in residue for smelting
23 MRM Albion Process Plant Oxidative Leach circuit Commodity - Zinc Location Australia Client Glencore Off Gas Scrubber HyperSparge system Bulk lead/zinc concentrate 150,000 tpa of cleaned zinc concentrate Commissioned 2014 Application: Selective oxidation of galena in a bulk concentrate to chemically liberate lead from zinc
24 4. The Future for Refractory Gold Projects
25 The Future for Refractory Gold Projects Demonstrated Alternative Albion Process Demonstrated high recoveries Demonstrated in current operations POx Guaranteed by technology provider / Lower capital costs Simple equipment + low skills requirement Short commissioning and ramp up period Can treat high carbonate material Tolerates variable feed rate and quality High availability and low maintenance
26 Albion Process Project Development Study phase well defined and understood Scale up now well understood, less sample and testwork required to define process. Phase 1 Amenability testwork and Class 5 Engineering Study (+/- 40%) Phase 2 Further batch testwork and Class 4 Engineering Study Phase 3 Feasibility study Piloting can be conducted if client requires, but not required for process guarantees. Study management can be provided by Core Resources (GT s laboratory and marketing partner). Basic engineering conducted by Glencore Technology. Flexible project delivery model Can work direct to client or through engineering companies
27 Albion Process Technology Access Information and contacts: Paul Voigt Manager Hydrometallurgy, Glencore Technology David Walker General Manager Integrated Solutions, Core Resources dwalker@coreresources.com.au
28 Thank You. 28
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