Ian Coltrin FLSmidth

1. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
ATTRITION SCRUBBERS
& LAB TESTING
23 February 2023
Ian S. Coltrin, PE
ProductLine Manager – Flotation & Attrition
Ian.Coltrin@FLSmidth.com
+1 801-758-5774

2. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
23 February 2023
AGENDA
ABOUT FLSMIDTH
FLOTATION IN MINING
ATTRITION SCRUBBERS
ATTRITION SCRUBBER LAB TESTING

3. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
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About FLSmidth

4. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
Minerals and cement
are all around us
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3
2
1
1
Mineralsfor
electronic
devices and
batteries
2
Cement for
construction
3
Copper for
electricity

5. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
Delivering results
for more than a century
▪ Experience and leadership for more than 135 years in cement
and over 100 years in minerals
▪ Globalfirstmoverin the cementindustry in the late 19th century
▪ Expertise and know-how to challenge conventions in both
industries
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6. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
FLSmidth
In mining since 1914
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1882
FLSmidth
is founded
1914
FLSmidth starts to supply
equipmentand services
to the minerals industries
2007
FLSmidth Minerals acquire
GL&V become a single
source supplier
1959
Traylor Engineering &
Manufacturing Companyis
acquired by Fuller Company
(Established 1902)
1990-
Acquisitions of>30 minerals
processing and materials
handling companies
VALUES
A business culture based on:
Competence,Co-operation
and Responsibility
VISION
We drive success through
sustainable productivity
enhancement
STRATEGY
Productivity
provider #1

7. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
FLSmidth in the Mining & Minerals Industry
Long history of strategic acquisitions
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FLSmidth (Denmark) starts to supply equipment and
serv ices to the minerals industry
Fuller Company is established in Catasauqua, PA, USA
Tray lor Engineering & Manuf acturing Company is acquired
by Fuller Company (Established 1902)
FLSmidth acquires
Fuller Company
FLSmidth f orms a
separate minerals
company , FFE
Minerals
FFE Minerals changes name to
FLSmidth Minerals. Acquisition of
Dorr-Oliv er Eimco and Krebs
Engineering f rom GL&V Process
transf orms FLSmidth into a major
supplier to the mining and minerals
industry
Entered into Joint Venture
with NHI Group to dev elop
mid-market product range
Acquisition
of the projects
business of
Sandv ik Mining
Sy stems to
bring f ull “Pit-
to-Plant”
solutions
capabilities to
FLSmidth
1914 1926 1959 1990 1993 1997-99 2000-06 2007 2008 2009 2010 2011 2012 2016 2017
FLSmidth completes the last of 13
strategic acquisition ov er a f iv e y ear
period to f ill all material gaps in f low
sheets f or its key commodities
FLSmidth acquires
IMP Automation
Group
2019 2020
FLSmidth acquires
KnowledgeScape

8. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
From pit to plant
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Exploration Development Extraction
Minerals
material
handling
Comminution
Beneficiation
& recovery
Tailings mgmt
FLSmidth
Metallurgical testing
Plant design
Supply and commissioning
IPCC & mine hoists
Automation
Operational services & remote control
Maintenance & parts
Wear materials
Hydrometallurgy
Pyro processing
Refining
& smelting
FLSmidthdelivers full minerals processing
flowsheetsolutions with a guaranteed
performanceand service support
throughout the life-cycle

9. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
4.
Pumps,
valves and
cyclones
5.
Beneficiation
and recovery
6.
Thickening
7.
Filtration
8.
Tailings
management
1.
Extraction
2.
Minerals
material
handling
3.
Comminution
The mining process cycle
▪ Early w aste
rejection
▪ Insitu processing
▪ Semi-mobile
Processing
▪ Bulk ore sorting
▪ Stockpile
management
▪ IPCC
▪ New Milling
Technology
▪ Wear
technologies
(composites)
▪ Energy recovery
▪ Wear & Lifetime
▪ Displacement
pumps
▪ Coarse flotation
▪ Dry processing
▪ Reflux tech
▪ ROL
▪ High performance
deep cone
thickeners
▪ Paste plants
▪ New continuous
pressure filtration
technology
▪ Dry stack
tailings/Ecotails
▪ Smart tailings
flow sheet
(reduction of
fines)
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10. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
Process flowsheet
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Flotation

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Flotation
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nextSTEP™ WEMCO®
Forced-air Naturally-aspirated
▪ WEMCO® & nextSTEP™ cells.
▪ World’s largest supplier of
flotation equipment with over
53,000 flotation cells installed
since 1951 (>70% market
share).

13. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
Separation by Flotation
▪ Slurry is agitated with additional chemicals making the desired ore hydrophobic.
▪ Air is introduced which create bubbles that the ore attaches to.
▪ Concentrated ore floats to the top. Tailing are removed through the underflow.
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Sokolovic J., Miskovic S., “The effect of particle size on coal flotation kinetics: A
review ”, PhysiochemicalProblems of Mineral Processing, 54(4), 2018, 1172-1190

14. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
FLSmidth Flotation
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WEMCO® nextSTEP™
Probability of Attachment = f(PSD, Slurry % Solids, pH, Reagents, Circulation, Particle
Suspension, Airflow, Bubble Size, Bubble Velocity, Turbulent Eddies, Slurry-Air Mixing
/ Shearing,…)
Energy In → Concentrated Ore Out

15. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
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Attrition Scrubbers

16. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
Attrition Scrubbers
▪ Flotation – cleaning particle surfaces prior to flotation to
increase selectivity.
▪ Glass sand – removing iron oxide coating on silica sand by
attrition and flotation to produce a low-iron glass sand.
▪ Industrial sand – Scrubbing blasting sand and fracturing
sand to disperse contaminating soft particles and other
impurities, which are then removed by desliming. This
process helps your sand product meet API standards by
creating a high purity, more crush resistant silica sand that
will meet your customers’ specifications.
▪ Ores and other minerals (e.g. phosphate) – freeing
impurities so they can be removed with the help of a spiral
classifier or hydrocyclone.
▪ Dissolving solids – using the attrition machine to dissolve
solids, reducing contact time by continuously exposing fresh
surfaces to the solvent.
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▪ Come in pairs with a downdraft and updraft
cell.
▪ Compact machines that require minimal floor
space.
▪ Octagonal tank design provides folding of the
pulp at each apex.
▪ Eliminates dead zones.
▪ Abrasion resistant liners on sides and
impellers.
Attrition Scrubbers

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Attrition Scrubbers
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3 Impeller Scrubbing
• Increased circulation for better particle
scrubbing.
• Eliminates short circuiting.
• Increased suspension reduces
concentrated wear patterns.
Typical wear pattern of 2 impeller
attrition scrubbers

19. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
Attrition Scrubbers
Required Sizing Data:
▪ Application
▪ Solids Throughput
▪ Percent Solids
▪ Solids Specific Gravity
▪ Retention Time
FLSmidth Considerations:
▪ Application
▪ Model Type and Size
▪ Number of Cells
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20. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
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Attrition Scrubbers
Lab Testing

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Lab-scale attrition testing helps to ensure proper equipment
selection.
Performed at FLSmidth’s Minerals Testing and Research
Centre in Salt Lake City.
Attrition Scrubber Tests
▪ Retention time testing
▪ Percent solids testing
▪ Particle size distribution (PSD) analysis
▪ Flotation testing of scrubbed samples
▪ Thickening and Filtration testing of scrubbed samples
▪ Elemental and mineral characterisation
Attrition Scrubbers
Lab Testing

22. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
23 February 2023
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▪ Retention Time Testing:
Samples are scrubbed for prescribed times at set % solids and particle size
distribution.
▪ Percent Solids Testing:
Samples are scrubbed at different % solids values at set retention time and
particle size distribution.
▪ Attrition Feed - Particle Size Distribution:
Samples can be tested at varying size distributions (e.g. removal of slimes) to
identify optimum scrubbing conditions.
Attrition Scrubbers
Lab Testing

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▪ Flotation Testing:
Scrubbed samples are submitted to lab-scale flotation tests under
standard conditions to evaluate the effect of the attrition scrubbing
on flotation performance.
Examples: Preparing surfaces prior to Cu/Mo separation. Floating silica
away from phosphates.
▪ Solid/Liquid Separation Testing:
Scrubbed samples are submitted to lab-scale thickening/filtration
tests under standard conditions to evaluate the effect of the
attrition scrubbing on the rheology of the material.
Process Testing – Flotation & Solid/Liquid Separation

24. The information contained or referenced in this presentation is proprietary to FLSmidth and is protected by copyrightlaw
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Thank you