DYNAMIC AIR INCORPORATED

DENSE PHASE PNEUMATICCONVEYING SYSTEMS

Dynamic Air Inc. Corporate Headquarters, St. Paul, Minnesota, USA

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Let's Dispel SomeMyths, Right Away

Fact: Dynamic Airis world renowned for itspneumatic conveying systems.

1. Each Dynamic Air system iscustom-designed, with over10,000 systems worldwide.

2. Our systems utilize the bestavailable technology to achievethe optimum performancecharacteristics at the highestefficiencies.

3. Our systems provide the ultimatein reliability with capacities aslow as a few hundred pounds perhour to over 400 tons per hourand distances exceeding 5000feet in length.

4. Dynamic Air has developed16 different pneumatic conveyingconcepts, utilizing both pressureand vacuum for handling a widevariety of dry bulk solids andprocess applications.

5. Our systems and services arecomprehensive. (Completesystems can include weighing,batching, blending, mixing, lumpbreaking, storage, completeelectronic control equipment andmore.) And we offer completeengineering and design, a state-of-the-art full scale test facilityand the highest caliber of techni-cal and engineering expertise inthe business.

This brochure explains how oursystems can improve efficiency,reliability and overall quality of yourmaterial-conveying process. But keepin mind that manufacturing thehighest quality systems in the worldis only part of our success story.Dynamic Air has built its reputationon listening to our customers,designing custom systems to fitspecific and unique needs andproviding outstanding field supportservices on a worldwide basis.

Everybody Claims That His SystemIs The Best For Every Application

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When it comes to conveying bulkgranular materials regardless of howabrasive, fragile or difficult to handle,Dynamic Air Dense Phase PneumaticConveying Systems are State-of-the-Art.

There's no longer any question thatdense phase pneumatic conveyingcan be the most reliable, efficientmethod for handling a remarkablywide range of dry bulk solids.

By definition, dense phase pneumaticconveying simply means using asmall amount of air to move a largeamount of bulk solid material inclosely-associated slugs through aconveying line. The process is similarto extruding.

Unlike "dilute phase" pneumaticsystems that typically use largeramounts of air (either positive pressureor vacuum) to move relatively smallamounts of material at high velocitiesin suspension, dense phase offers theenormous advantage of efficiently"pushing" a much denser concentrationof bulk solids at relatively low veloci-ties (300 to 2000 feet per minute)through a conveying line.

The result: gentle handling of heavyabrasive materials and non-abrasivesolids that cannot tolerate degradation.For many fragile crystalline andgranular materials there is no finerprocess. And Dynamic Air's densephase systems offer more gentletreatment of system components aswell: because of the lower velocities,system wear and related breakdownsare minimized.

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Dynamic Air's dense phase pneumaticconveying is:

• Energy and labor efficient.• Reliable, because of fewer moving parts and

less system wear.• Flexible, allowing installations of entire

conveying systems in spaces too small orcrowded for mechanical systems with mini-mum disruption to your production schedules.

• Totally contained, minimizing particulatecontrol problems.

Typical materials conveyed are:alumina, aluminum oxide, baby formula, ball clay,barite, bauxite, bentonite, borax, calcium carbonate,calcium chloride, carbon black (pelletized), cement,coffee beans (roasted), cullet, detergent (agglomer-ated), feldspar, fine coal, flour, fluorspar, fly ash,foundry molding sand, glass batch, glass beads,ground meal, gypsum, iron oxide, kaolin clay, kyan-ite, lime, litharge, magnesium, milk powder, peanuts,PVC resin, quartz, roofing granules, salt, silica sand,soda ash, sodium sulfate, steel chips, sulfur, sugar(crystal), talc, titanium dioxide and more.

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Dynamic Air'sExclusiveDyna-Chek® 4Booster Fittingis the Key toComplete Controlof Your Material Throughthe Entire Conveying Line.The earliest dense phase conveyingsystems were nothing more than ablow tank and a pipeline. Somesystems still are. In these systems, allthe air required to convey the materialout of the transport vessel and toovercome friction in the conveyingline is added at the blow tank.

But these more primitive systemshave major drawbacks. Paramountamong them: reduced efficiency,because they require larger volumesof air and are limited to conveyingsmaller batches of material.

Further, the larger amounts of air thatmust be added to these systems toprevent plugging leads to increasedconveying velocity. This velocitycreates some of the very problems thatdense phase systems were developedto avoid - greater abrasion and/orproduct degradation.

The Dyna-Chek 4 booster fittingprovides a precise, gentle pushexactly where it is needed.

Dynamic Air systems do not addall the air at the transportingvessel. Instead, we add only thevolume required to move thematerial into the line at maximumdensity. After the material beginsto convey down the line, we addonly the necessary air to overcomeconveying line friction, as it occursand not before.

Friction can increase in a system forvarious reasons, such as a bend in theconveying line or a change in materialcharacteristics. Dyna-Chek 4 boosterfittings allow us to maintain yourmaterial at a maximum density andminimum conveying velocity,overcoming friction as it occurs.

The Dyna-Chek 4 booster fitting is soreliable that most materials can bestopped or restarted anywhere alongthe conveying line regardless oflength!

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The Dynamic Air precision-control concept is unsurpassedfor system reliability, efficiency,flexibility and performance.

Because we add air all along the line,we improve the material-to-air ratiothroughout the system withoutcausing plugging problems. Thus, wecan convey large batches of materi-als, providing the highest obtainableefficiencies with the added plus ofthe highest degree of reliability.

Dynamic Air systems are designed toconserve valuable compressed air.Since your material is maintained atthe lowest possible velocity through-out the entire system, there is lessabrasion. The conveying line life isextended and degradation of fragilematerials more effectively minimizedthan with any system that adds allthe energy (almost always too muchenergy) only at the blow tank.

Because of its unique check valveaction, the booster fitting is highlyresponsive to back feeding of theconveyed material, and it can be

throttled to obtain optimum effi-ciency at virtually any point in theconveying line. Furthermore, ourbooster fittings make our systemshighly flexible - we can handle manymaterials previously thought impos-

sible for pneumatic conveying, andby adding new booster fittings, aDynamic Air system can even beeasily expanded, modified or up-graded for most processes, materialsor design changes.

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We are the world'sdense phase pneumaticconveying specialists.We are a manufacturer.Our systems are recognized assecond to none for their reliabilityand performance. And they gobeyond pneumatic conveying toinclude a full range of componentsfor a complete material handlingsystem: air-activated gravity con-veyors, switches, bag breakers,batch weighing systems, divertervalves, mixers and blenders, dustcontrol equipment, automatic bagopeners, lump breakers, aerators,bin discharge systems, silo blenders,feeders, rotary spouts, powderpumps, storage bins and hoppers,and much more, any of which canbe designed into a Dynamic Airsystem.

We provide completelyengineered systems.Any truly high performance systemis more than hardware. Dynamic Airis a world leader in dense phasepneumatic conveying because of ourpeople and the expertise they canbring to your material handlingdesign problem.

We are listeners first and foremost.We never walk into a client's plantwith standardized plans in our backpockets and off-the-shelf "compro-mise" solutions. Instead, we mergeour bulk handling expertise withyour unique process knowledge todesign a custom system for yourapplication.

We have a fully equippedtesting laboratory.If you have a new material that mustbe tested or if our knowledge ofyour material is limited, we will testyour special material in our full-scale test facility.

In our testing lab, we determineconveyability, material-to-air ratios,material velocities, hygroscopiceffects, build-up tendencies, dustcollector requirements, degradation,segregation, filling times, conveyingtimes, optimum conveying pres-sures, air volumes, aerated bulkdensities and any other test data thatmight be required. Little is left indoubt.

Complete turnkey system for conveying, weighing and blending ceramic powders

Full scale testing facilities

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Railroad sanding system

Turnkey carbon black conveying system

Weighing/batching conveying system

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Mobile Truck LanceTM filling a truck

Dense phase transporter with a Vibra-JetTM

bin discharger conveying detergentMultiple dense phase conveying lines

High density vacuum system conveying carbon blackFull Line Concept® pneumatic conveying system conveying corn

Dense phase pneumatic conveying system

Bag delivery to a mixer surgebin and a mixer delivery systemManual bag breaker with PowderPusher delivery to a mixer surgebin and dense phase deliveryfrom a mixer to three use bins.

Rail unloading with weighingand in-plant delivery systemDense phase batch delivery totwo storage silos, from silos viaDyna-Slide conveyors to weighhopper with air blending andtransporter delivery to two in-plantuse bins.

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Dust removal systemutiltizing an existing screwconveyor systemDense phase batch delivery systemfrom a central dust collector via a screwconveyor to one storage silo.

Unloading of storage silosto in-plant use bin systemsDense phase batch delivery systemfrom four storage silos, via a Dyna-Slideconveyor, to four in-plant use bins.

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Rail unloading and in-plantdelivery systemDense phase batch delivery systemfrom a rail car, via a Dyna-Slideconveyor, to two storage silos andfrom silos to two in-plant use binsusing a common conveying line.

Dust removal systemwithout a screw conveyorDense phase batch delivery systemfrom a central dust collector to onestorage silo.

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Rail unloading and in-plantdelivery systemDense phase batch delivery systemfrom a rail car, via a Dyna-Slideconveyor, to two storage silos andfrom silos to two in-plant use binsusing a common conveying line.

Vacuum-pressure railunloading utilizing bothdilute and dense phasesystemsCombination of a dilute phasevacuum system and a densephase batch pressure systemto two storage silos; densephase batch delivery from silosto two use bins.

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Weighing and batching systemVariable rate screw feederbatching with dense phasedelivery to an in-plant surge bin.

Weighing and batching systemDyna-Slide conveyors to a weighhopper and air blender; densephase transporter to two in-plantuse bins.

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In-plant delivery systemDense phase batch deliverysystem using Full Line Conceptfrom one batch hopper to threein-plant use bins.

In-Plant delivery to pressurizedreactor systemDense phase batch delivery froma storage silo to a high pressurereactor.

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Silo blending and in-plantdelivery systemSilo blending with densephase batch delivery toa truck loading spout oran in-plant bagging machine.

Continuous in-plantdelivery systemDense phase continuousdelivery from a storage siloto an in-plant use bin.

PneumaticConveyingSystemComponents

TufferTM Aerator/LumpBreaker

Blendcon® Silo BlendingHead, 16-port

Dyna-SlideTM Air ActivatedGravity Conveyors andFeeders

Vibra-JetTM Bin Aerator,Model D and Model K

Vibra-JetTM Bin Discharger

Blendcon® Silo BlendingHead, 10-port

Accu-FloTM Screw Feeder NETX® Vibratory Feeder

Forberg Fluidized ZoneBatch Mixer

Forberg Batch Cooler/Dryer

Forberg Continuous Mixer

BagBuster® Bag Breaker/CruncherTM Bag Compactor

BulkBusterTM Bulk BagUnloader

BulkBusterTM Bulk BagUnloader with BagBuster®

Bag Breaker

Bulk Bag Slitter

Posi-flate® InflatableSeated Butterfly Valve

Quiet-PacTM VacuumBlower Package

NETX® Vibratory Screener

Modu-Kleen® DowndraftCartridge Type DustCollector

View-XTM Sight Tubes

90 Degree DiverterSwitch Receiver

Rotary Spout

15 Degree 2-Way & 3-WaySwitches

Multi-port Switch

Superslik® AbrasionResistant Tubing Bends

TransporterCrossover Switch 2-Way Sliding Switch

Valve Receiver

Plain, Hard Iron andCeramic Tubing Bends/Elbows

Long Radius CeramicLined Tubing Bend

Pipe Couplings

End Receiver

Modu-Kleen® CartridgeType Bin Vent Filter

Modu-Kleen® Bag TypeBin Vent Filter

Modu-Kleen® TopRemoval Cartridge TypeBin Vent Filter

Modu-Kleen® CartridgeType Vacuum Filter/Receiver

www.dynamicair.com

Corporate HeadquartersDynamic Air Inc.1125 Willow Lake Blvd.St. Paul, MN 55110USA

Phone +1 651 484 2900Fax +1 651 484 7015

Printed in USA • © 2001

Bulletin 9906-2 (dm2)

Dynamic Air Conveying Systems®, Accu-FloTM, BagBuster ®, Blendcon®, BulkBusterTM, Dyna-Chek ®, Dyna-SlideTM,Modu-Kleen®, NETX ®, Quiet-PacTM, Superslik ®, TufferTM, Vibra-JetTM and View-XTM are registered trademarks ofDynamic Air Inc., St. Paul, MN USA. Posi-flate® is a registered trademark of Posi-flate, St. Paul, MN USA.

United KingdomDynamic Air Ltd.14 Carters Lane, Kiln FarmMilton Keynes MK11 3ERUnited Kingdom

Phone +44 (0) 1908 568155Fax +44 (0) 1908 564615

BrazilDynamic Air Ltda.Av. Mathias Lopes, 582112960-000 Nazaré Paulista SPBrazil

Phone +55 11 4597 8000Fax +55 11 4597 8001

AustraliaSuite 122300 Richmond RoadGrey Lynn Auckland 1002New Zealand

Phone +64 9 376 3623 (NZ)+61 3 9543 4888 (AU)

Fax +61 3 9543 4887