The TMAC Resources Inc. Hope Bay Project An Innovative Approach. Gerhard Bezuidenhout

Transcription

1 The TMAC Resources Inc. Hope Bay Project An Innovative Approach Gerhard Bezuidenhout

2 Gekko s mission

3 Global Footprint

4 Global & Gold/Silver Focused - increasing coal/polymetallic focus Total 150 staff Team of 45 in Metallurgy & Process Engineering Offices: Ballarat, Jo-Burg, Vancouver, Perth, Moscow Agents: South America, Ghana 600 units installed in over 40 countries worldwide

5 How we make a difference Low Energy Pre-concentration flowsheets New technologies, focus on liberation Small Footprint Higher and faster returns Industry change agent Community Fund Modular and miniaturised design Underground processing Design and construct business model, cut waste Lower capex, opex, faster time to install CEEC, Austmine, METS Ignited, Innovation Australia Graduate program, Grinning Gekko Supplier Award Focus on vulnerable young families, pre-school Cancer research

6 Intelligent Unique Technology InLine Pressure Jig InLine Leach Reactor Gekko Mag-Screen InLine Spinner G-Rex Resin Column Gekko Electrowinning Gekko Python

7 Python for Underground

8 The TMAC Resources Inc - Hope Bay Project - An Innovative Approach

9 Background TMAC is a mineral exploration and development company developing economically and environmentally sustainable mining projects in the Hope Bay Greenstone Belt in Nunavut, Canada. The site is situated in the country s far north, within the Arctic Circle and has very specific requirements. TMAC needed a robust plant that was easy to transport and install with a low height profile and low energy usage. The Python Environomic Processing Plant is Gekko s flagship mineral processing solution. As an innovative plant specifically designed for highly efficient gold and sulphur liberation in remote environments, the Python was the perfect choice for the Hope Bay project. Over the life of the Hope Bay mine, TMAC can expect to achieve 91% recovery rate. The modular plant has been designed to initially treat 1,000 tonnes of mill feed per day by the end of Stage 1 and reach its maximum capacity of 2,000 tonnes per day in early The expected head grades at 11.4 g/t Au

10 TMAC Resources Hope Bay Project Concentrator

11 TMAC Resources Hope Bay Project Concentrator Flotation Ball Mills MCCs Gravity (IPJ) VSIs Secondary Crushers Reclaim Primary Crusher Gold Room (incl G-Rex) Tailings Thickener Reagents Batch ILR Regrind Mills Continuous ILRs Detox

12 Hope Bay Process Flowsheet Comminution and Gravity ORE PRIMARY JAW CRUSHER PYTHON 1 GRIZZLY UNDERSIZE SECONDARY JAW CRUSHER JAW PRODUCT CYCLONE O/F SECONDARY SCREEN SECONDARY SCREEN UNDERSIZE CYCLONE VSI CRUSHER VSI FEED VSI PRODUCT TERTIARY SCREEN UNDERSIZE TERTIARY SCREEN CLEANER IPJ TAILS PRIMARY MILL APRON FEEDER CYCLONE U/F IPJ FEED ROUGHER IPJ IPJ CONCENTRATE FLOTATION COND TANK IPJ TAILS CLEANER IPJ GRAVITY CONCENTRATE

13 Hope Bay Process Flowsheet PYTHON PROCESSING PLANT ORE PRIMARY JAW CRUSHER PYTHON 1 GRIZZLY UNDERSIZE SECONDARY JAW CRUSHER JAW PRODUCT CYCLONE O/F SECONDARY SCREEN SECONDARY SCREEN UNDERSIZE CYCLONE VSI CRUSHER VSI FEED VSI PRODUCT TERTIARY SCREEN UNDERSIZE TERTIARY SCREEN CLEANER IPJ TAILS PRIMARY MILL APRON FEEDER APRON FEEDER FLOTATION CYCLONE U/F IPJ FEED ROUGHER IPJ IPJ CONCENTRATE FLOTATION CONCENTRATE Frother Collector FLOTATION COND TANK Promoter IPJ TAILS CLEANER IPJ GRAVITY CONCENTRATE CONCENTRATE THICKENER CONCENTRATE BELT FILTER CONCENTRATE TREATMENT FLOTATION TAILS FLOTATION CONCENTRATE CONCENTRATE STOCKPILE STAGE TWO CYCLONE O/F CYCLONE GRAVITY CONCENTRATE FLOTATION FLOTATION COND TANK CYCLONE U/F PRIMARY MILL ROUGHER IPJ CONCENTRATE PYTHON 2 FEED GRIZZLY UNDERSIZE SECONDARY JAW CRUSHER SECONDARY SCREEN VSI CRUSHER IPJ TAILS TERTIARY CLEANER CLEANER IPJ TAILS FLOTATION TAILS JAW SECONDARY SCREEN UNDERSIZE VSI PRODUCT TERTIARY SCREEN UNDERSIZE IPJ FEED Flocculant FLOTATION TAILS THICKENER TAILINGS TAILINGS IMPOUNDMENT AREA

14 Hope Bay Process Flowsheet

15 Three Stage Crushing Circuit A front end loader recovers the ore from the ROM pad and tips onto the Primary Grizzly to scalp out +600 mm materials. The minus 600 mm material is fed to the primary jaw crusher which crushes the rock to a P95 of 125 mm. The primary jaw crusher product is fed to the secondary screen, screening at 50 mm, the secondary crusher crushes oversize to a P95 of 75 mm

16 Tertiary (VSI) Crusher The Vertical Shaft Impactor (VSI) operates in closed circuit with screens Energy benefits of circuit established with fine crushing Consistency of modular approach The VSIs models are Remco VS300RR

17 Vertical Shaft Impactor (VSI) Feed accelerated, leaves rotor at 70 m/s. The VSI handles large variation in moisture content, ideally suited wet screened products. This is a very versatile comminution technology.

18 Continuous Gravity Recovery The product of the VSI and screening then fed to the InLine Pressure Jigs (IPJ) This is for gravity concentration of free gold and sulphide recovery This a Continuous gravity recovery, not batch. Treatment of coarse particles up to~20mm

19 Castlemaine Goldfields Plant Gravity Circuit Design 800k tpa 94% gravity recovery

20 Primary Grinding Mill The primary ball mill prepares the IPJ tails for the downstream flotation with a target P 80 of 150 um

21 Flotation Cells The tailings from gravity separation are fed to the flotation circuit. Following gravity separation flotation is the most common industrial method by which valuable minerals are separated from the waste rock targeting finer minerals not recovered by gravity. The slurry is agitated and with the use of air and reagents to the valuable minerals are recovered.

22 InLine Leach Preparation Due to the coarseness of the ore feeding gravity and flotation the flotation concentrate is usually reground finer to improve the leach kinetics and recovery

23 ISP InLine Spinner (BCC) Often incorporated as a second gravity step for mining operations, the ISP further concentrates and upgrades material from the IPJ or other jigs. The ISP is extremely effective for recovering coarse free gold from concentrates and for alluvial operations. The ISP has the major advantage of very little water use, which is ideal for use in small milling and cyanide systems.

24 ILR Smart, Simple, Highly Effective Intensive Cyanidation Reactor for Au & Ag Concentrates 1996 ILR Continuous Prototype Launched (Pioneered commercial IC) 2016 Over 140 Units, 27 countries Technical & Market Leading Technology 20 years

25 Theory of Operation Removal of diffusion layer/abrasion Faster access for CN Faster Kinetics

26 Electrowinning Cells

27 The ILR5000CA Continuous ILR

28 The G-Rex Upflow Resin Column

29 The G-Rex Upflow Resin Column

30 Hope Bay Sealift Routes 5,000 km 8,000 km 10,000 km

31 Gekko Technical Partnerships Technical Partnership Review opportunities across global operations Reduce energy consumption Long term opportunity underground Replace surface mills

32 Lean Manufacturing And Office

33 Status March 2017 Equipment delivery: Arrived August 25 th 2016, in more than 200 containers; unloaded at end of August Construction slightly delayed due to building and foundation delays nothing to do with Gekko or TMAC. - Construction completed end December Commissioning started beginning of January ,000 hours total - First Gold pour February 9 th Everything is on budget

34 Status March 2017 Project fly-through

35 Status March 2017

36 Status March 2017 Project Update

37 it s all about people Gekko Team 2016