The TMAC Resources Inc. Hope Bay Project An Innovative ......Vertical Shaft Impactor (VSI) • Feed...
Transcript of The TMAC Resources Inc. Hope Bay Project An Innovative ......Vertical Shaft Impactor (VSI) • Feed...
The TMAC Resources Inc.
Hope Bay Project
An Innovative Approach
Gerhard Bezuidenhout
Gekko’s mission
Global Footprint
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
How we make a difference
• Pre-concentration flowsheets
• New technologies, focus on liberation Low Energy
• Modular and miniaturised design
• Underground processing Small Footprint
• Design and construct business model, cut waste
• Lower capex, opex, faster time to install
Higher and faster returns
• CEEC, Austmine, METS Ignited, Innovation Australia
• Graduate program, Grinning Gekko Supplier Award
Industry change agent
• Focus on vulnerable young families, pre-school
• Cancer research
Community Fund
Intelligent Unique Technology
• InLine Pressure Jig
• InLine Leach Reactor
• Gekko Mag-Screen
• InLine Spinner
• G-Rex Resin Column
• Gekko Electrowinning
• Gekko Python
Python for Underground
The TMAC Resources Inc - Hope Bay
Project - An Innovative Approach
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 2018.
• The expected head grades at 11.4 g/t Au
TMAC Resources – Hope Bay
Project Concentrator
TMAC Resources – Hope Bay
Project Concentrator
Gravity (IPJ)
VSIs
Secondary
Crushers Reclaim
Primary
Crusher
Ball Mills
Flotation MCCs
Tailings
Thickener
Reagents
Batch ILR
Continuous ILRs
Detox
Gold Room
(incl G-Rex)
Regrind
Mills
Hope Bay – Process Flowsheet
Comminution and Gravity
APRON FEEDERCYCLONEU/F
CLEANERIPJ
CYCLONEO/F
SECONDARY JAW CRUSHER
GRAVITYCONCENTRATE
CLEANER IPJ TAILS
TERTIARY SCREEN UNDERSIZE
SECONDARYSCREEN
GRIZZLY UNDERSIZE
JAW PRODUCT SECONDARY SCREEN UNDERSIZE
VSI PRODUCT
VSI FEED
ORE
ROUGHERIPJ
PRIMARY MILL
IPJ CONCENTRATE
IPJ TAILS
CYCLONE
IPJ FEED
FLOTATION COND TANK
TERTIARYSCREEN
PYTHON 1 PRIMARY JAW CRUSHER
VSI CRUSHER
Hope Bay – Process Flowsheet PYTHON PROCESSING PLANT
CLEANER IPJ TAILS
TERTIARY SCREEN UNDERSIZE
SECONDARYSCREEN
GRIZZLY UNDERSIZE
JAW SECONDARY SCREEN UNDERSIZE
VSI PRODUCT
TERTIARYVSI CRUSHER
APRON FEEDER
APRON FEEDER
PYTHON 2 FEED
ROUGHER
CLEANER
CYCLONEO/F
CYCLONEU/F
GRAVITYCONCENTRATE
CYCLONEU/F
CLEANERIPJ
CYCLONEO/F
SECONDARY JAW CRUSHER
SECONDARY JAW CRUSHER
GRAVITYCONCENTRATE
CLEANER IPJ TAILS
TERTIARY SCREEN UNDERSIZE
SECONDARYSCREEN
GRIZZLY UNDERSIZE
JAW PRODUCT SECONDARY SCREEN UNDERSIZE
VSI PRODUCT
VSI FEED
ORE
ROUGHERIPJ
PRIMARY MILL
CONCENTRATE BELT FILTER
CONCENTRATE STOCKPILE
FLOTATION IPJ CONCENTRATE
IPJ TAILS
FLOTATION CONCENTRATE
FLOTATION TAILS
CYCLONE
IPJ FEED
FLOTATION COND TANK
TERTIARYSCREEN
FLOTATION TAILS THICKENER
CONCENTRATE TREATMENT
PRIMARY MILL
FLOTATIONIPJ CONCENTRATE
FLOTATION CONCENTRATE
FLOTATION TAILS
CYCLONE
IPJ FEED
FLOTATION COND TANK
PYTHON 1 PRIMARY JAW CRUSHER
TAILINGS IMPOUNDMENT AREA
TAILINGS
STAGE TWO - 2017
Collector Promoter
Frother
Flocculant
CONCENTRATE THICKENER
IPJ TAILS
VSI CRUSHER
Hope Bay – Process Flowsheet
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 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
The minus 600 mm material is fed to
the primary jaw crusher which
crushes the rock to a P95 of 125 mm.
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
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.
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
Castlemaine Goldfields Plant – Gravity Circuit
Design 800k tpa – 94% gravity recovery
Primary Grinding Mill
• The primary ball mill prepares the IPJ tails for the downstream flotation
with a target P80 of 150 um
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.
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
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.
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
Theory of Operation
Removal of diffusion layer/abrasion – Faster access for CN – Faster Kinetics
Electrowinning Cells
The ILR5000CA – Continuous ILR
The G-Rex 13000 Upflow
Resin Column
The G-Rex 13000 Upflow
Resin Column
5,000 km
8,000 km
10,000 km
Hope Bay Sealift Routes
Gekko Technical Partnerships
• Technical Partnership
• Review opportunities across global
operations
• Reduce energy consumption
• Long term opportunity underground
• Replace surface mills
Lean Manufacturing And Office
Status – March 2017
• Equipment delivery: Arrived August 25th 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 2016
- Commissioning started beginning of January 2017
- 18,000 hours total
- First Gold pour February 9th 2017
- Everything is on budget
Status – March 2017
Project fly-through
https://www.youtube.com/watch?v=H7mSbfvoA4k
Status – March 2017
Status – March 2017
Project Update
https://www.youtube.com/watch?v=09_h8slDnJQ
“it’s all about people”
Gekko Team 2016