Advanced Engineering, Worldwide Facilities &Comprehensive Technical Support

EIMCO Process Equipment Companyis an organization whose history anddevelopment are inextricably linkedwith the evolution of twentieth centurymining and minerals processing. Sincethe early 1900s, EIMCO has pioneeredthe development and deployment ofnew process technology and equipment,producing products that have helped themining industry steadily reduce its costof production while maximizingrecovery efficiency.

Today, EIMCO supports the extractiveindustries with an unmatched combina-tion of advanced engineering, world-wide manufacturing facilities and com-prehensive technical support services.

Advanced Engineering - EIMCOblends the latest CAD/CAMtechnologies with an intimateunderstanding of process flowsheetsand mill environments, producingmechanical systems that are productive,reliable and economical.

Worldwide Manufacturing -Manufacturing facilities are locatedin North and South America, Europe,Africa, and Australia.

Technical Support - Expert technicalsupport specialists are available world-wide for process consultation, flowsheet development, mechanism sizing,troubleshooting and new installationstart-up assistance.

Tankage and Erection Service -In many parts of the world, completeerection and construction managementservices are available for containmenttanks and basins used with EIMCO®

sedimentation equipment.

Sedimentation Equipment

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EIMCO® Thickener DrivesEIMCO® thickener drives are the mostdurable and reliable units in the world.Great care in material selection andstrict adherence to AGMA designguidelines result in longer gear life,higher usable torque and maximumpeak torque capacity.

EIMCO® Thickener Drives Feature:

Worm and multi-stage spur gear designs with planetary intermediatereducers

Separate, precision four-point contact main bearings support the main gear and protect against severe radial, overturning and vertical loads

Steel main spur gears are hardened prior to machining

All gears and bearings are oilbath lubricated

Accurate torque control for reliableoverload protection

Rake arm lift mechanisms availablefor all center driven thickeners

All pinion shafts are fully supportedto ensure accurate alignment

Standard torque capacities from 3,000 - 8,000,000 Nm (2,000-6,000,000 ft./lbs.) with special designs available to 13,500,000 Nm (10,000,000 ft/lbs.).

EIMCO® ThickenersEIMCO is the world’s leading manufac-turer of minerals-duty thickeners in ap-plications such as concentrate, tailings,preleach and CCD. With over a halfcentury’s experience and thousands ofinstallations, EIMCO Process engineerscan assist in sizing and mechanismselection for maximum economy andperformance.

Thickener Types:Bridge supported mechanism - forbasins to 53m (174 ft.) in diameter

Column supported mechanism -for basins to 183m. (600 ft.) in diameter. Includes conventional center pier support as well as caisson design with underflow pumps located within the caisson. Center drive and peripheral tractiondrive designs are available.

SwingLiftTM (cable drive) -for thixotropic slurries. Available to90m (300 ft.) diameter.

Hi-RateTM Thickener - Enhanced flocculation accelerates set-tling. Higher flow and loading rates reduce space requirements. Availableup to 125m. (420 ft.) diameter.

Metallurgical Reactor-Clarifier -designed for high-efficiency clarifi-cation of feed streams using me-chanical flocculation in the feedwell.Rakeless (E-CATTM ) - clarifier-thickeners combine excellent clarification and high underflow slurry density in a small footprint.

Delta-Stak® - Inclined Plate Clarifiers give large clarification area in a compact, lowmaintenance tank.

Deep ConeTM Paste Thickener patented system to maximize solids concentration for economic disposal and liquor recovery.

High Density Paste Thickener for high tonnage applications produc-ing high solids concentration.

E-CAT™ Clarifier-ThickenerThe EIMCO® E-CATTM Clarifier-Thickener streamlines liquid-solidseparation flowsheets by combiningoptimized flocculation, high-rate clari-fication and high-density thickening ina single compact unit with no movingparts. The E-CATTM Clarifier’s deeptank and steep compaction cone con-centrate settled solids, while annularrows of clarifying cylinders aggregateand remove fine suspended solids fromthe overflow liquor. An internal cone/pipe system rapidly channels free waterto the feedwell for influent dilution.

Sizes from 2m diameter x 7.7m heightto 12m diameter x 16m height.

EIMCO® Deep Cone™ andHigh-Density Paste ThickenersEIMCO® Deep ConeTM and High-DensityPaste Thickeners optimize flocculationand enhance settled solids compressionfor maximum underflow slurry solidsand minimum thickener footprint. DeepConeTM units accommodate up to 20times the solid mass flow and 10 timesthe volumetric loading of conventionalthickeners. Their deep tank designmaximizes pulp concentration, andproduces uniform, non-segregating,paste consistency underflow slurry.

Deep ConeTM Paste ThickeningApplications:

Coarse or fine tailsCCD circuits - superior washing

Base metals

Phosphate slimes

Diamond slimes

Uranium tails

Surface stacking and water recovery

E-DUC® Feed Dilution SystemE-DUC® feed dilution systems boostsettling rates and dramatically reducepolymer consumption by dilutingthickener feed slurry with clarifiedsupernatant. No pumps are required fordiluting liquor circulation and influentenergy is utilized for polymer mixing,eliminating all moving parts. Theimproved settling efficiency reducesoverflow liquor solids, increasesunderflow slurry density, and reducespolymer consumption by up to 60percent. Retrofits available for mostconventional thickeners.

High Rate Thickeners

High Performance Sedimentation Equipment

E-CATTM Clarifier Design Features Operating AdvantagesNo moving parts Lower capital cost

Lower energy consumptionReduced maintenance

Smaller surface area than Reduced capital and installationconventional thickeners expense

Self-diluting feedwell Optimal flocculant utilizationNo external flocculant dilution pumps

Excellent overflow clarity Effluent re-useLower ponding area requirements

Dense underflow Reduced filtration equip. downstreamReduced handling volumeIncreased CCD efficiency

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The SmartCell™ flotation machinecombines the proven WEMCO® flotationmechanism with cylindrical cells tooptimize energy input, aeration, andmixing. This configuration reducespulp turbulence and improves frothstability. Additional standard featuresinclude a hybrid draft tube, beveledcell bottom, froth crowder, mixingbaffles, and radial launders.

Since the introduction of the SmartCell™

Flotation Machine in early 1996, mostmajor base metal flotation developmentshave selected WEMCO® SmartCell™

machines.

Cylindrical Tank DesignImproves mixing efficiency and

air dispersion

Better surface stability and less

pulp turbulence

Lower capital costs

Hybrid Draft Tube & Beveled TankImproves hydrodynamic mixing

Increases solids suspension

Improves coarse particle recovery

Radial Launder & Mixing BafflesIncreases froth mobility

Decreases froth residence time

Increases recovery

WEMCO® SmartCell™ Flotation Machines

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Semi-CircularFeed Box

DisperserHood

Disperser

Tank Bevels

Hybrid DraftTube

FalseBottom

Motor

AgitatorMechanism

FrothCrowderRadialLaunder

MixingBaffle

SingleConcentrateLaunder

Rotor

Feed

Tails

Ambient Air

Pyramid™ Flotation ColumnsPyramidTM flotation columns deliver highrecoveries and grades, reduce reagentconsumption, decrease maintenancecosts and lower capital expense. Thekeys to success are as follows:

Design: First and foremost, the appropri-ate number, size and layouts of flotationcolumns is accomplished by applyingthe critical design parameters and work-ing with our customers to optimize thelayout of the system. EIMCO’s highlevel of experience can guide our cus-tomers through this step.

KnowledgeScape® process control soft-ware allows engineers to maximize theeconomic gain of virtually any process-ing or manufacturing operation.KnowledgeScape® software is the firstreal-time optimization system that actu-ally learns process dynamics and adjustsprocess setpoints to achieve a true opti-mal operating regime. This is the firstexpert system operating shell ever tocohesively integrate several differentartificial technologies in a commonwrapper. The KnowledgeScape® soft-ware has met with huge successes as aresult of the unique synergy created bycombining such tools as fuzzy logic,neural networks and genetic algorithms.Installations worldwide have experi-enced large productivity increases andalmost immediate return on investment.The KnowledgeScape® software is avail-able as a retrofit system for controllingindividual unit operations or for plant-wide optimization. All EIMCO equip-ment can be provided with embeddedKnowledgeScape® intelligence for opti-mized control.

KnowledgeScape®

Control Software

Process Control

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Sparger Selection: For the “heart” ofthe column, EIMCO Process offers theRateMax® supersonic sparger systemwhich is designed for maximumoperational flexibility and minimummaintenance.

Operation: Proper feed conditioning andselection of column flotation operatingparameters such as froth depth, aerationrate and washwater flow rate can makeor break a column installation.

Benefits of PyramidTM Columns:

Improve hydrodynamic conditions for improved flotation separation

Wear-resistant sparger nozzles

On-line sparger maintenance — No down time!

Reduced capital costs

Pyramid™ Columns Sparger & DesignEIMCO’s latest generation columnflotation sparger system, the RateMax®

supersonic sparger system provides in-credible opportunities to both improveperformance and increase operationalflexibility as well as decrease mainte-nance requirements. The exit velocity ofthe gas leaving a RateMax® nozzle isabout 50% greater than a standard col-umn sparger nozzle, which translatesinto smaller bubbles being formed. Thenet result is that the bubble surface areaflux rate, Sb, is as much as 50% higherthan traditional sparger designs. Someof the features and benefits of theRateMax® sparger include a simple, ro-bust design constructed of wear andchemical resistant ceramics, easy on-linemaintenance of the system and the abil-ity to easily retrofit any column installa-tion. Combined with our ACDSM (Auto-mated Column Designer), engineeringand design services, EIMCO has apotent combination of both technologyand tools to assist any user of columnflotation technology.

WEMCO® Agitair® Flotation CellsAgitair® flotation cells offer fine processcontrol through low-pressure forced aer-ation with individual valves controllingair supply to each bank and cell. Mixingand air diffusion are achieved throughthe use of hollow-shaft impellers andfloor-mounted stabilizer. Several impel-ler and stabilizer configurations areavailable to accommodate various celland process requirements. Agitair®

cells provide excellent performancein cleaner circuits.

Cell Sizes: 1 - 14m3 (40 - 500 ft3)

EIMCO® Drum FiltersEIMCO® rotary vacuum filters provideefficient, continuous filtration with theflexibility to handle dewatering, cakewashing or clarification. Their abilityto accommodate maximum hydraulicflows and a wide range of cycle timesallows optimum cake formation in manydifferent slurries.

EIMCO® Drum Filters Feature:Rigid box and gusset drum construction with unitized end platesand machined annular internal support rings to ensure structural integrity and drum roundness.

Five available discharge arrangements: scraper, roll, EIMCOBELT®, string or precoat.

Cast Hy-FlowTM filter valve with smooth internal contours and large diameter ports for minimal pressure drop.

Large diameter internal piping for high flow volume, minimal pressure drop.

Deep deck sections with poly-propylene grid cloth supports.

Wide choice of materials includingmild steel, rubber-covered steel, stainless steel, and exotic metals.

Drum Filter Sizes:Drum diameter: 1 - 4m (3 - 13.5 ft.)

Drum length: 1 - 11m (3 - 36 ft.)

Filtration area: 1 - 140m2 (9 - 1500 ft2)

EIMCOMET™ MoldedThermoplastic Drum FiltersEIMCOMetTM filters provide dependablevacuum filtration in corrosiveapplications such as those found in manymolybdenum and rare earth circuits -at a substantially lower price thanfilters constructed of exotic metals.All components that contact corrosiveagents are molded thermoplastic or FRP.

EIMCOMetTM Filter SizesDrum diameter: 1 - 3m (3 - 10 ft.)

Drum length: 0.3 - 4.2m (1 - 14 ft.)

Filtration area: 0.9 - 39m2(9.4 - 420 ft2)

EIMCO® Extractor®

Horizontal Belt FiltersEIMCO Extractor® horizontal beltvacuum filters are versatile, high-production machines that utilize bothgravity and vacuum forces for rapidseparation of liquids from coarse solids.Multiple wash zones of adjustablesize can be arranged in co-current orcounter-current fashion, making theEIMCO® Extractor® HBF filter an idealchoice for cake washing applications.Top feed and an extended cake dryingzone accommodate fast settling solidsand low cake moisture requirements.

EIMCO Extractor® Filters Feature:Choice of drainage belt carcass andelastomer materials to match processdemands. Support carcass is fully encapsulated for protection from process liquids.

Trapezoidal, flexible, or static belt edge flanges available.

Air deck support and traveling wearbelt available in larger filter sizes.

Diamond design vacuum pan for high hydraulic flow, low pressure drop. Lowering system provides easy access.

Filters

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EIMCO® Extractor® Filter Sizesand Capacities:Filtration area: 1 - 150m2

(10 - 1600 ft2)

Processing Rates: 50 - 2500 Kg/hr/m2

(10 - 500 lbs/hr/ft2)

Belt Speeds: Variable to 1 mps(200 ft/min)

EIMCO® Agidisc™ FiltersAgidiscTM filters provide compact, low-cost, high volume production wherelarge filtration areas are required. Theyare particularly effective in filtering fast-settling solids that do not require cakewashing. Ideal applications include ironore, coal cleaning and alumina hydrate.

Agidisc™ Filters Feature:Heavy duty tank with external steelframe. Rubber lining availableHy-FlowTM filter valve accommodatesmaximum hydraulic and pneumaticflows with minimum pressure drop

Durable molded plastic sectors

Agidisc™ Filter Sizes:Number of discs: 1 to 15

Disc diameters: 1.2 - 3.8m (4'0" - 12'6")

Filtration areas: 2 - 300m2 (22 - 3300 ft2)

AFP IV™ Automated FilterThe AFP IVTM Filter design provides asimple, rugged and reliable solution tothe special problems associated withminerals processes. These filters notonly provide high throughput andefficient solids capture, but they alsooperate continuously, automatically,in harsh environments, and can handleabrasive or corrosive slurries. Whencoupled with simple systems andEIMCO operating philosophies,operating costs are maintained atthe lowest levels in the industry.

EIMCO® AFP IV™ Filters Feature:15 bar operating pressure

Hydra-ShiftTM Plate Shifter

PLC Control

Automatic lubrication

Automatic drip trays

Automatic shaker

Automatic flood washer

10-25 minute cycle times typical

Double-ended feed

Available up to 120 Chambers

Quick Open/Close Plate Options

1200, 1500, 2000 mm plates in polypropylene or cast iron

Lower operating costs

Recessed plates standard

Membrane plates optional

Special materials

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EIMCO® Belt Press FiltersEIMCO® Belt Press Filters effectivelycombine long gravity drainage andwedge sections with decreasing diametercompression rolls, each one wrapppedover a long arc to maximize retentiontime under pressure. This results inhigher throughputs and lower cakemoistures. Fine coal or tailings can beefficiently dewatered for dry stacking.EIMCO® filters accommodate feedmaterial from 0.5 - 0mm (30 - 0 mesh)in size.

Belt Press Sizes & Capacities:Belt widths: 1.0 - 2.6m (3 - 8.5 ft.)

Capacities: to 30 metric or 33 short tons/hour

EIMCO® Vertical LeafPressure FiltersThe EIMCO® VPF isan automatic, self-sluicing pressure filterdeveloped specificallyfor Bayer liquorfiltration in aluminaprocessing. It featuresa top-opening standardpressure vessel withswing bolt flange andO-ring seal, dischargecone and verticallymounted filter leaves.Operation is fullyautomatic with cakedischarge achieved bysequential leaf sluicingthat minimizes liquorconsumption andeliminates dischargecone blockage.

EIMCO® Vertical Pressure Filters feature:

Quick release internal filtrate spigot connections

Bottom leaf guides to prevent filter cloth wear or damage

Three filtration areas in one standard vessel size: 375, 415, and 440m2

Filters

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Attrition MachinesWEMCO® Attrition Machines provideparticle surface preparation, cleaning anddesliming to improve productivity of

Granular Media FiltersEIMCO manufactures pressure andgravity feed granular media filters forminerals applications such as pregnantsolution filtration in SX/EW circuits. Allfilters use Flexscour® underdrains, whichhave been designed for efficient mediautilization and uniform distributionof simultaneous air scour and waterbackwashes for effective bed cleaning.Flexscour® laterals are partitioned toseparate air and water flows, allowingthe underdrain to be cleaned in place byinternally circulating high temperaturewash water. All underdrain componentsare manufactured of stainless steelfor a completely corrosion-resistantinstallation.

Pressure vessels are fabricated to ASMEcode VIII. Filter vessels are available infull stainless steel construction. Gravityfeed filters are also available in FRPconstruction. EIMCO® filters are avail-able in complete shop-fabricated, skid-mounted modules with all required in-strumentation and controls.

WEMCO® Pacesetter®

Oil/Water SeparatorsThe WEMCO® Pacesetter® oil/waterseparator has become the standard inSX-EW applications for separating aque-ous and organic streams. The Pacesetter®

separator uses a unique, two-stage pro-cess to effectively recover entrainedorganic from either raffinate or electro-lyte or to remove entrained aqueousfrom organic streams. First, influentenergy is diffused by a coalescer packcausing small droplets to collide andform larger ones. This is followed by aseparator pack that provides separatesurfaces and flow paths for aqueousand organic streams thus preventingre-entrainment. The packs are inclinedat 60 degrees to enhance solids removal.The WEMCO® Pacesetter® oil/water sep-arator is designed to handle a wide vari-ety of influent entrainment concentra-tions as well as upset conditions andcrud runs.

Pacesetter® oil/water separators are engi-neered in a range of sizes and can besupplied in a variety of materials ofconstruction such as stainless steels orFRP. Start-up and operation are simpleand reliable with little operator attentionand maintenance required.

Liquid and Liquid Separation

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Scrubbers / Classifiers

subsequent treatment processes such asglass sand preparation and flotation.Powerful attrition action is created byparticles abrading against each other ina thick, high-density pulp as it movesthrough a series of octagonal cells. Eachcell is equipped with a separate motordriven impeller with three sets ofalternating pitch blades. The resulting

flowreversalsprovidecontrolledturbulencefor effectiveattrition.Cast alloy,Ni-hard orrubbercoveredpaddles and

abrasion-resistant steel or rubber-coveredsteel tank liners limit wear andmaintenance.

Cell sizes: 0.20 - 5.7m3 (8 - 200ft3)

ClassifiersWEMCO® Spiral Classifiers providecontinuous wet classification, washing,dewatering or desliming. Fines and low-density materials overflow the tank weirwhile coarse, fast-settling particles areremoved and dewatered by the turningspiral. Large diameter tubular shafts andshort, cast flight arms carry heavy loadswith minimal deflection. A simple liftingdevice permits easy start-up after shut-down or power interruption. Replaceablewear shoes and tank liners simplifymaintenance and ensure long service life.

SpecificationsSpiral diameters:300 - 2500 mm

(12 - 100 in.)

Tank lengths: 1.8 - 14.6m (6 - 48 ft.)

Wear materials: Ni-Hard, rubber, urethane

WEMCO® Dense Media CyclonesWEMCO® Cyclones provide high-tonnage separation in acompact footprint for smaller feed particle sizes in the0.5 - 50mm range. Cast Ni-hard or high chrome steelconstruction minimizes abrasive wear, and easily replace-able sections reduce maintenance expense. An availableautomatic density control system provides precise cutcontrol to (plus/minus) 0.01 SG units.

Sizes: 350 - 700mm diameter

Treatment rates: to 250 tph

WEMCO® HMS SystemsStandardized Mobil-Mill systems are available withWEMCO® Drum, Cone or Cyclone separators. All systemsincorporate feed preparation, separation, product drainage,washing and dewatering, media reclamation, storage and return.All phases are semi-automated or controlled from a singlecontrol panel. EIMCO water clarification and fines pressingcircuits are available to suit. Capacities: to 800 metric or900 short tons/hour.

WEMCO® HMS Drum SeparatorsWEMCO® HMS Drum Separators perform gravimetric solid-solid separations using a separating medium whose specificgravity lies between those of the substances to be separated.Sharp separations are achieved in the specific gravity rangeof 1.25 - 3.8, at feed capacities of up to 820 metric or 900 shorttons per hour. WEMCO® Drum Separators are designed tohandle abrasive materials in the size range between 6 - 300 mm(1/4" - 12"). Single and dual gravity machines are available,designed for low maintenance and service lifetimes of 15years or more.

Capacities: to 820 metric or 900 short tons/hour.

WEMCO® HMS Cone SeparatorsWEMCO® Cone Separators handle separations where onlyslight gravimetric differences exist between sink and floatproduct, and where retention time is critical. Ample area-volumeratio permits sharp separations at high capacities, in feed particlesizes from 1.5 - 75mm (10 mesh - 3").

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Heavy Media Separation

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EIMCO® Separation and Treatment Equipment

Granular Media Filtration SystemsFLEXSCOUR® Stainless Steel Underdrain

POLYKLEEN™ Underdrain System

CASTKLEEN® Underdrain System

Gravity & Pressure Filters

Low-Head Filters

Grit Removal SystemsCenter-Raked Gravity Separators

Aerated Grit Chambers

Grit Washer-Classifiers

Pressure Filtration - Dewatering SystemsSHRIVER® Filter Presses

EIMCO® AFP IV™ Automated Filters

EIMCO® CLARI-DISC® Filters

EIMCO® Vertical Leaf Pressure Filters

EIMCO® Belt Press Filters

Process Control SystemsKNOWLEDGESCAPE® Adaptive Optimizing Software

ThickenersCenter-Drive Circular Thickeners

Peripheral Drive Circular Thickeners

Hi-Rate™ Drive Thickeners

E-CAT™ Thickener-Clarifiers

EIMCO® Deep Cone™ Paste Discharge Thickeners

EIMCO® Swing Lift Thickeners

EIMCO® Thickener Drives

Vacuum Filtration SystemsEIMCO® Rotary Drum Filters

EIMCOMET™ Thermoplastic Drum Filters

EIMCO® Extractor Horizontal Belt Filters

EIMCO® Traveling Belt Filters

EIMCO AGIDISC™ Filters

Aeration Systems / Biological ProcessesEIMCO® Low-Speed Surface Aerators

Propulsair aerators

EIMCO® Carrousel® System

BARDENPHO® Process

Advent AIS System

Rotary Distributors

Anaerobic Digestion Systems

EIMCO® Digester Covers

EIMCO® Hydroseal® Digester Covers

EIMIX® Mechanical Sludge Mixers

ClarifiersEIMCO® Center-Raked Circular Clarifiers

EIMCO® Flocculating Clarifiers

EIMCO® Solids-Contact Clarifiers

E-CAT™ Clarifier-Thickeners

EIMCO® Clarifier Drives

TRAC-VAC® Pneumatic Sludge Collectors

DELTA-STAK® Laminar Flow Clarifiers

FLEXKLEAR™ Laminar Flow Settlers

ClassifiersWEMCO® Spiral Classifiers

Dense Media Separation SystemsWEMCO® Drum Separators

WEMCO® Cyclone Separators

WEMCO® Modular Separation Plants

Flocculation & Mixing SystemsEIMCO® Flash Mixers

EIMCO® Vertical Turbine Mixers

EIMCO® Paddle Flocculators

FLOCSILLATOR® Oscillating Mixers

Flotation Systems - Minerals SeparationWEMCO® 1+1® Cells

WEMCO® SmartCells™

PYRAMID™ Flotation Columns

WEMCO® Agitair® cells

WEMCO® Attrition machines

Global Sales, Service and Full Equipment Life-Cycle Support

Orillia

Salt Lake CityPittsburgh

San Luis PotosiMexico City

Lima

Santiago

Sao PauloJohannesburg

RugbyWiesbaden

MilanMadrid

Torcy

Hoofddorp

Beijing

Singapore

BelmontGosford

e-mail: doeinfo.slc@glv.com • www.glv.com

For a complete listing of office locations, visit www.glv.com or contact our US office at 1.801.526.2000

© 2007 F.L. Smidth Group. All rights reserved.

For a complete listing of office locations , visit www.flsmidthminerals.com or contact our US office at 1.801.526.2000