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INTELLIGENT MINERAL PROCESSING
INTELLIGENTMINERAL PROCESSING
ADDING VALUE THROUGH INNOVATION
▪ Innovative and smart solution providers
▪ Working with clients to improve
▪ Recovery & grade
▪ Production & profitability
▪ Environmental sustainability
▪ Offering novel approaches
▪ Expert knowledge in mineral liberation and separation
▪ Flexible and responsive
▪ World leaders in fine & ultrafine grinding
MINERAL PROCESSING
SOLUTIONS
▪ METALLURGICAL STUDIES▪ Laboratory and Pilot Scale Testwork
▪ Scoping I PEA I PFS I DFS
▪ OPERATIONAL OPTIMISATION
▪ Plant Audits
▪ Troubleshooting
▪ Optimization
▪ CONSULTANCY▪ Programme Design
▪ Audits
▪ Process Innovation
▪ CP/QP
WHO WE WORK WITHINDUSTRIES
▪ Base Metals
▪ Precious Metals
▪ Industrial Minerals
▪ Critical & Battery Metals
▪ Recycling & Environmental
COMPANIES
▪ Exploration
▪ Prospective & Operational Mining
▪ Recycling
▪ Consultancy & Engineering
▪ Equipment Manufacturing
▪ Grinding Media & Reagent Supplier
Tailings Retreatment
EXPLORATION PROJECT MINING PROCESSING MARKET REMEDIATE
ADDING VALUE ACROSS THE MINE VALUE CHAIN
Plant Optimisation
Plant Troubleshooting
Variability
Review/Audits/Due Diligence
PFS
PEA
DFS
Flow-sheet Development
Early Scoping
QP/CP
Consultancy
Process Innovation
Strategic and Tactical Geometallurgy
Recycling
Environmental
TESTING CAPABILITIES
PROCESS MINERALOGY
GRINDING CLASSIFICATION FLOTATION
GRAVITY SEPARATION
SOLID-LIQUID SEPARATION
HYDROMET CALCINATION
EQUIPMENTJaw Crushers I SPI I DRA GrindMill
Rod & Ball Bond Mill I Vertimill® I HSI
IsaMill™ I SMD I HIGmill® I RoStar Mill
Denver D12 I FLS I Wemco I Gallagher
Spirals I Jigs I Shaking Tables I Superpanner
Falcon
Screens I Cyclones (5” to 10mm) I Centrifuges
Bottle Rolls I Columns I Aachen Reactor
Rotary Calciner I Static Kilns I Furnaces
PILOT SCALE EQUIPMENT
ScreeningRotary Screen 18”
Inclined Screen 1m x 1m
CrushingJaw Crushers I Cone Crusher I Rolls
Crusher
Deagglomeration Twin Shaft Metso Blunger
Hydrocyclones I P600 Continuous Centrifuge Classification
FlotationImhoflot G8 & G14
Continuous Flotation Banks 2 x 6 Cell I Single 50l Cell
Filtration Plate and Frame Press
Gravity Spirals I Jig I Shaking Table I Falcon
ComminutionContinuous Ball Mill 30” x 30”
Rod Mill 32” x 16” I RoStar
Analytical Internal
Malvern Mastersizer 3000
Olympus pXRF
Zeiss Microscope
Brookfield Viscometer
Atomic Absorption
Bulk Density
Specific Gravity
Screen Sizing
Thermal Gravimetric Analysis
OTHER SERVICES
Analytical External
OTHER SERVICES
Optical and Automated Mineralogy
Wet Chemistry
XRF
XRD
SediGraph
SEM
Abrasiveness
Crushability
Abrasion Index
Los Angeles Value
Brightness
CASE STUDIES
Flowsheet Development | Iberian Pyrite Belt VMS
Background
▪ Greenfield exploration project
▪ Contains both Massive Sulphide (MS) and Stockwork (STKW) ore types
Method
▪ Mineralogical assessment of both ores
▪ Sequential flotation for both the MS (Pb/Zn) and STKW (Cu/Pb/Zn) conducted
Results
▪ Mineralogy▪ Assessment showed that the copper in the MS was too fine for economic extraction with a liberation of less than
2µm
▪ Lead and zinc mineralogy also fine with primary grind sizes of c. P80 25µm anticipated, in line with existing operations in the pyrite belt
▪ STKW contained coarser mineralogy but with secondary copper sulphides thus containing an inherent sphalerite activation challenge
▪ Flotation▪ MS lead and zinc performance inline with other operations within the Iberian Pyrite Belt
▪ STKW produced saleable copper (26% Cu), lead (55% Pb) and zinc (52% Zn) concentrates with acceptable recoveries (c. 75%)
▪ Both ore types responded well to standard reagent regimes
▪ Further optimisation work scheduled for Q1 2021 to enhance existing performance
Flowsheet Development | West African Gold
Background
▪ Greenfield exploration project in West Africa
▪ Contains both oxide and fresh ore zones, fresh ore containing the larger tonnage
Method
▪ Heap leach and carbon-in-leach (CIL) amenability testwork
▪ Gravity testwork
▪ Flotation testwork on fresh ore only
Results
▪ Leaching
▪ Oxide ore responded very well to heap leach with recoveries greater than 95%
▪ Oxide ore performed even better to CIL with recoveries above 98%
▪ Sulphide ore also responded well to CIL with recoveries greater than 86%
▪ Gravity / Flotation
▪ Gravity response poor for both oxide and sulphide ores with only 30% of the gold gravity recoverable
▪ Flotation testwork of the fresh ore delivered c. 66% recovery, but only very preliminary testwork and further optimisation will improve this
Flowsheet Development | Iberian Tungsten
Background
▪ Brownfield deposit, previously mined
▪ Typically coarse Wolframite in veins
Method
▪ Coarse gravity separation with Jigs
▪ Fine gravity concentration with shaking tables
▪ Magnetic separation on both feed and gravity concentrates
Results
▪ Ore very amenable to jigging as a preconcentrate separator with >90% recoveries in all size fractions
▪ Fine gravity concentrate produced c. 60% WO3
▪ Magnetic separation on the tungsten concentrate increased grade to 63% WO3
▪ Overall recovery c. 70%
▪ Magnetic separation on the feed produced high recoveries and a suitable primary recovery technique with concentrate for further cleaning
THANK YOU
Contact Us
+44 (0) 1872 223331
www.grindingsolutions.com 2020 Q4 Rev00
mailto:[email protected]://www.grindingsolutions.com/
