Polysius

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Engineering made by Polysius.Company portrait.

A company ofThyssenKrupp

Technologies

Engineeringmade by Polysius.

Polysius AG is one of the world’sforemost engineering companiesproviding equipment for the cementand basic industries – a position it owes to the outstanding qualityof its products and services.

For Polysius, quality meansgearing every company functionand operation to ensure that clients’requirements are fully met.

The crucial prerequisite for successis the ability to tackle and imple-ment user-specific projects at an agreed cost and to agreedquality standards and deadlines –regardless of whether they involvea complete new plant, a plantconversion or merely sections of a plant. In every case, the conceptproduced ensures the best choice

of machinery for the specificapplication, as well as finely tunedprocesses and inter-stage links for overall plant efficiency.

A comprehensive customerservice programme (including field assembly and commission-ing, personnel training, mainte-nance and servicing, spare partsprocurement, resource analysis,plant optimisation and custom-tailored tests and developmentwork) completes the scope ofservices provided by Polysius.

5Think global,act local.

Securing a long-term future in the face ofinternational competition and responding activelyto market opportunities worldwide requires bothunderstanding for foreign cultures and knowledgeof local markets.

As early as 1947, Polysius set about creating anetwork of foreign subsidiaries, starting with theformation of Polysius Ltd. in Ascot, Great Britain.

Today, Polysius has a worldwide presencethrough 11 strategically-located subsidiaries,ensuring that every client finds the right contactin the Polysius Group at all times – a person they can relate to.

All Polysius companies follow the same princi-ples: the parent company in Beckum acts as the headquarters of the Group. It co-ordinates all the activities of the subsidiary companies,carries out all R&D work, provides the necessaryresource management for the Group and definesthe technical standards the Group companiesneed to observe when bidding for and executingcontracts. This ensures that all Polysius compa-nies offer identical technology.

The foreign subsidiaries are the client’s contactwithin the regional markets they address. Theyemploy local personnel for customer servicing,processing enquiries and administering con-tracts. They also make use of local resources for materials procurement and manufacturing.

Polysius – at home in Beckum and all over the world.

From the vise to heavy plant engineering.

In spring 1859, master machin-ist Andreas Ernst GottfriedPolysius opened his own work-shop in Dessau, thereby layingthe foundations for today’sglobal player – Polysius AG.

In 1870, he set up the G. Poly-sius iron foundry and engineer-ing works, which soon becamea respected designer and man-ufacturer of highperformancemills for the burgeoning con-struction materials industry.

By 1890, the founder’s heirswere working on the company’s100th mill contract.

From that time onwards, Poly-sius specialised in machinesfor crushing, grinding and pro-cessing raw materials and inthe construction of cementworks. The result: in 1898, thecompany built Europe’s firstrotary kiln and in 1907 con-structed a complete cementfactory in Egypt.

In the late 1920s, Dr. GeorgLellep invented the LEPOL®

process, which revolutionisedconventional cement produc-tion. The LEPOL® grate sig-nificantly improved the cementburning process in the rotarykiln and reduced fuel con-sumption by a third.

After the Second World War,Polysius initially restarted itsactivities in Dessau. At thesame time, however, Dr. Curt

Prüssing, a member of thePolysius family, formed West-pol GmbH in Beckum. Threeyears later, this company wasrenamed Polysius GmbH.

With the old name emblazonedon a new corporate banner,business quickly picked up,especially exports. Ten yearsafter the new start, Polysiuswas already employing 600 people in Germany and100 abroad.

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In 1971, the Essen-based company Fried. Krupp GmbHacquired a majority sharehold-ing in Polysius.

In 1992, the company wasintegrated into the Krupp PlantEngineering Division of theFried. Krupp AG Hoesch-KruppGroup.

In 1999, the Krupp merger with the Thyssen Group to formthe ThyssenKrupp AG set

another milestone in our com-pany’s 140-year history. As a member of the internationalThyssenKrupp Technologiessegment, Polysius is poised tomaster the challenges of thefuture.

1893: World Exhibition in Chicago.

Modular analysisby the finite element method.

CAD designing of the POLRO®

drive station.

Grinding trackstresses in a QUADROPOL®

roller mill.

Simulation of multi-phase flow in a separator (CFD).

From left:Four cement production lines in Egypt.Gold ore comminution plant in Nevada, USA.Cement production line in Florida, USA.AT oil extraction processor in Australia.White cement production line in Spain.Cement production plant in Missouri, USA.Nickel ore dressing plant in Venezuela.10,000 tpd kiln line in Anhui, China.

9Custom-tailored quotations.

As a general rule, a lot ofground needs to be coveredbetween a client’s first thoughtsabout a project and the start of actual construction work onthe site.

Polysius accompanies the client all the way, providinghighly professional assistancedesigned to find the technolog-ical and economical solutionbest suited to the client’s indi-vidual needs.

Very often, co-operation startswith Polysius engineers study-ing local conditions (e.g. localinfrastructure, power supply,environmental protectionrequirements, existing produc-tion facilities and raw materialresources).

On the basis of the specificmaterial and process engineer-ing data and taking account ofall boundary conditions, Poly-sius then identifies the opti-mum manufacturing process.Once the process parametershave been defined, work com-mences on machine engineer-ing and on the plant andmachine layout. After this,specifications are prepared for the components required,

their technical data and theway they are integrated in theproduction process.

At Polysius, an analysis of the production process alwaysprecedes layout planning forthe specific function involved – regardless of whether theproject involves an individualunit such as a mill, or a com-plete production plant.Particularly where individualunits are incorporated intoexisting plant configurations,this gives the client the securityof knowing that full compati-bility with other process sec-tions and system componentsis assured.

The proposal prepared by Poly-sius is thoroughly discussedwith the client, placing him in a better position to identify and utilise all available deci-sion-making options. After all,before a contract is awarded it is vital not only for the clientbut also for Polysius to besatisfied that the joint projectwill be a success.

The high quality of Polysiusquotation preparation work isconfirmed by the continuousstream of contracts awarded by clients all over the world.

Cement production line in Mexico.

10 Research and Development.If you don’t think of the future, you won’t have one.

Many plant engineeringcompanies restrict themselvesto merely providing engineeringservices. The Polysius philos-ophy, however, is to developand offer own-name productswhich cater to the clients’needs in the core stages of the production process (rawmaterial preparation, clinkerproduction and cement pro-duction, including automationsystems).

Based on clients’ require-ments, on our great depth ofexperience in the designing,manufacturing and operation of Polysius products and onobservation of technologicaldevelopments in the industry,Polysius plans an appropriateproduct strategy and R&D programme for every product.

The Polysius Research andDevelopment Centre is one ofthe world‘s foremost develop-ment establishments for

cement and primary materialstechnologies.

The intensity of competition in international markets makeshigh-tech innovative prowessimperative.

Polysius has the calibre ofpersonnel needed to meet theconstantly changing require-ments of markets in flux and

rapidly translate the fruits of result-oriented research intomarketable products.

One major challenge for pro-duct and process developmentis that the ever-shorter productlife spans result in a need tosignificantly speed up develop-ment without increasing therisks inherent in innovations.

Thanks to the use of the latestcomputerised R&D tools, as

well as carefully directedupscaling from laboratory topilot and industrial plant, thatrisk can be made calculable or eliminated altogether.

Stimuli for technologicaladvancements come not onlyfrom Polysius engineers butalso from clients and fromscientific institutes with whichPolysius co-operates. Thisclose communication and co-operation on the techno-

logical development front is characteristic of the relation-ship between Polysius and the industry.

In the constant search formarket-oriented innovations tomake production operationsmore efficient and profitable,our main development priori-ties are not »only« to reducecapital costs and minimisepower consumption. We alsofocus particularly on environ-

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mental compatibility, with theobject of reducing emissions,designing low-impact plants,maximising the use of second-ary raw materials and/or fuels,developing and employinganalytical systems for qualityassurance and providing sig-nificantly greater machine andplant availability.

Maintaining our technologicallead through the systematicdevelopment of new products

and processes is a primarycorporate objective at Polysius.

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Cement –the construction material with a past and a future.

It is hard to imagine the modern world without cement. Versatile, easy to use and economical to produce,cement is one of the world’s mostimportant construction materials.

Cement is a binding agent that hardensin air and water and becomes waterresistant when hard. It consists mainlyof compounds of calcium oxide (CaO),silica (SiO2), alumina (Al2O3) and ironoxide (Fe2O3).

The raw components are ground,homogenised and burned. At 600°C,the limestone breaks down into CaOand CO2. This reaction ends at 900°C.At 1,250°C, sintering occurs, i.e. theCaO fuses together with SiO2, Al2O3

and Fe2O3 to form new compounds.This is an exothermic reaction that rais-es the burning temperature to around1,500°C and accelerates the sinteringprocess.

The material leaves the rotary kiln as a granular mass. This is cement clinker,the main component of cement.

The basic properties of the cement, its setting time and strength, are adjust-ed by the addition of gypsum and bygrinding to a particular fineness. Otherproperties and possible applications can be influenced by the addition ofgranulated blast-furnace slag, poz-zolana, trass, fly ash and other inorgan-ic mineral materials.

Raw material preparation.

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Process sequencein a cement plant...

The efficient production ofhigh-grade cement productsdemands far more than com-bining ideal partial processsteps or even ideal individualmachines. The required suc-cess can only be achieved byconsidering the entire produc-tion process and optimising itas a whole, taking due accountof capital cost and operatingexpenses. For this reason,Polysius systematically consoli-dates process and plant know-how to create innovative con-cepts for the process sectors of raw material preparation,clinker manufacturing andcement manufacturing, whichare in turn incorporated intoeconomical overall solutions for the complete cement pro-duction process.

... from raw material preparation

1. CrushingThe raw material is crushed tothe size of coarse gravel.

2. Interim storage, blendingThe raw material is stockpiledor homogenised in blendingbeds.

3. ProportioningThe proportioning station feedsthe raw material to the mill inthe right quantity and composi-tion.

4. GrindingThe raw material is ground to the required fineness in theraw mill and is simultaneouslydried.

5. HomogenisingThe raw meal is homogenisedand stored in silos, from whichit is fed at a controlled rate tothe preheater.

...via clinker manufacturing

6. Preheating and calciningThe raw meal is preheated and calcined in the cyclonepreheater and calciner.

7. BurningThe raw meal is burned at atemperature of around 1,500°Cin the rotary kiln to form clinker.

8. CoolingMost of the heat given off dur-ing clinker cooling is recoveredfor use in the productionprocess.

...to cement manufacturing

9. StorageThe clinker store is the feedstation for the cement grindingstage.

10. GrindingAdditives are fed in during the clinker grinding process to achieve the required typeand grade of cement.

11. Storage, packing andloadingThe finished cement is trans-ferred to storage silos, fromwhich it is loaded into bulktransporters or bags.

Material analysis and quality assurance

The chemical composition of the materials is regularly analysed at various points in the course of the entire production process.This is either performed directly by means of online analysis or by taking representative samples which are then automaticallyprepared and analysed in the plant laboratory. The analysisresults form the basis for process interventions in order to assurequality.

Clinker manufacturing. Cement manufacturing.

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In a time when, on the one hand, the raw materials andfuel grades are deteriorating constantly (primarily due to the use of substitute fuels) and, on the other hand, thedemands on the clinker quality are rising, quality assuranceis an absolute necessity.

With POLAB® CNA for online analysis upstream of theblending bed, POLAB® AOT for online analysis and mixturecontrol of raw meal and POLAB® AMT for sample prepara-tion and analysis in the central laboratory, Polysius offerspowerful systems that provide the earliest possible infor-mation on the chemical composition and homogeneity ofthe materials and initiate the appropriate control interven-tions.

For efficient storage and homogenisation of raw materialsprior to further processing, Polysius offers a broad range ofcircular and longitudinal blending bed and storage systemswith harmonised stacking and reclaiming methods.

Simulation andascertainment ofthe homogeneitydevelopment in the course of rawmaterial prepara-tion using the ISARprogram during thedrafting and opti-misation phase.

Starting material Result

15Raw material preparation.From the quarry to preheater feeding withraw meal.

In order to optimally design the rawmaterial preparation system, it is firstnecessary to have precise knowledge ofthe raw materials and fuels that will beused. This knowledge forms the indis-pensable basis for selection of the pro-duction process, including the blending,storage, homogenisation, grinding andanalysis systems.

The Polysius research centre has all the facilities required for analysing andevaluating quarried raw materials usingchemical, mineralogical, thermal andphysical test methods. Even on thebasis of small data quantities, the veryextensive Polysius database enablesreliable classification of raw materialsand identification of their properties.

Based on the material test results andalso on the customer-specific boundaryconditions, we then select, arrange andengineer the necessary machines andanalysis systems.

Product programme

Material analysis/raw materialPOLAB® CNA

Bulk material storage/blending

Longitudinal stockpile /blending bedCircular stockpile /blending bed

Grinding/dryingQUADROPOL® roller millDOROL® roller millTube mill POLYCOM® high-pressuregrinding roll

Separating/collectingSEPOL® high-efficiency separatorHigh-efficiency cyclone

Material analysis/raw mealPOLAB® AOTPOLAB® AMT

Blending/storageMulticell siloTangential blending siloStorage silo/bin

Flow regulation/conveyingPOLDOS® flow regulatingconveyorPOLDENS® pressure-vesselconveyorAEROPOL® vertical conveyorFLUIDOR® trough conveyor

Coal grinding/fuel preparationLongitudinal stockpile/circular stockpileDOROL® roller millTube millPOLAB® coal dust samplingStorage silo/bin

During this phase Polysius employs aspecial software program called ISAR inorder to ensure adequate examinationof alternative options in the minimumpossible period of time. This database-supported program simulates alterna-tive plant and process configurations,including the resulting raw materialhomogeneity development, enabling us to quickly filter out the solution thatprovides optimum process technologyand cost effectiveness for the particularproject concerned.

For raw material grinding Polysius offers roller mills, tubemills and high-pressure grinding rolls. Selection of the rightsystem for each individual application is determined by thethroughput, feed moisture content, availability, maintenancerequirement, wear characteristics, capital cost and operat-ing expense. High throughput rates, small construction sizeand high availability characterise the QUADROPOL®. Thisnew Polysius roller mill has four rollers, whose bearingassemblies are located outside the grinding chamber andare thus protected against dust and high temperatures. Withits automatic changeover from 4 to 2-roller operation, themill provides high adjustment flexibility to changes in rawmeal requirements. Also, the two opposite grinding rollerscan be swung hydraulically out of the mill housing for main-tenance purposes. The two roller units remaining in the millcontinue the grinding process, so that the QUADROPOL®

fulfils the prerequisites for »online operation« with a practi-cally uninterrupted flow of material from the mill to the kiln.

For the homogenisation or interimstorage of fine-grained products –such as raw meal – Polysius offers avery broad range of silo designs. Themulticell silo (our latest development)consists of a number of individual cellsand is used especially in cases wherethe raw meal has a high segregationfactor and where the process situationrequires only small storage volumesfor the homogenisation. The individualsilo cells are fed consecutively withraw meal and the homogenised mealis discharged from all the cells simul-taneously. A combination of this silotype with the POLAB® AOT provides afurther optimisation of the raw materialpreparation process.

Clinker manufacturing.From the preheater to the clinker conveyor.

Today, the industry’s requirementsregarding quality, maximum performance,minimum costs and low emission rates are more decisive than ever for the com-petitive situation. And that is the reasonwhy x robust and reliable construction x low resource consumption x high operat-ing reliability x low operating and capitalcosts and x process-integrated emissionreduction concepts are the most importantfactors in the success of Polysius clinkermanufacturing systems.

In modern cement plants, the burningprocess is performed in a chain of threesystems. In the multistage cyclone pre-heater with calciner the meal is preheatedto about 800 to 900° C and decarbonatedby kiln exhaust gases. In the rotary kilnitself, a temperature of approx. 1450° C

causes sintering – a chemical/miner-alogical process, during which the cementclinker is formed. Subsequently, the clinker minerals are »fixed« by the coolingprocess in the clinker cooler. The coolingair containing the recuperated heat is used in the kiln as combustion air.

While meeting a large number of require-ments, the plant supplier has the crucialtask of optimising the overall pyroprocess-ing concept by providing high-performanceindividual machines.

Thanks to today’s highly efficient pre-calcination systems, significantly smallerrotary kilns can now be installed, eventhough the throughput rates are usuallyhigher than in the past. This has the effectof reducing the capital cost. The actually

required kiln dimensions essentiallydepend on the employed raw materialsand fuels, the plant configuration, thequality of the cement clinker and the pro-duction rate itself. The kiln shell size,determined on the basis of laboratory test processes, computer simulation andcalculation, is a crucial criterion whendeciding whether to use 2 supports or 3supports. For technical and economicalreasons the practical boundary between a2-support kiln and a 3-support kiln is alength to diameter ratio of approx. 15:1.

Thanks to its high-temperatures, theclinker manufacturing process is eminentlysuitable for the utilisation of waste mate-rials. These waste materials substitute forthe valuable fossil fuels that would other-wise be used in the cement burning

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process. Nowadays, up to 80 % of thefuels used in cement rotary kilns can bereplaced by secondary materials.

In order to significantly increase the usage of large-sized substitute fuels andthus drastically reduce costs, Polysiusdeveloped the precombustion chamber.This shaft reactor thermally processeslarge-sized materials, producing reactivegases and coke that are then fed into thekiln system as fuel. With the precombus-tion chamber it is possible to increase the amount of large-sized substitute fuelsused in the precalciner to three times thepreviously usual quantity.New, unconventional solutions

form the basis for the sophisticatedclinker transport mechanism of thePOLYTRACK®: the transport tracks aredriven by hydraulic cylinders installedbeneath the stationary aeration floor.

POLYTRACK® – the new Polysius coolergeneration. Just a few of its innovativedesign details are: separation of clinkerconveyance and aeration, extremely lowconstruction height, no grate riddlings,very high clinker bed transporting efficien-cy, ideal transverse distribution of theclinker, high thermal efficiency, autoge-nous wear protection of the cooling grate,static plates used for the entire grate andmodular design.

First-class pyroprocessing: 3,000 stpd cementproduction line including:x DOPOL® ’90 cyclone preheater with preceding multicell silo for raw meal storage and blending x PREPOL®-CC-MSC calcinerx POLRO® rotary kiln andx POLYTRACK® clinker cooler.

Developmentof the POLRO®

two-support kiln, which is turned by a friction drive operating

via the kiln tyre and supporting rollers, enabled the specific advantages of the two-support kiln (statically determined

system) to be combined with the required dimensions (L/D = 15).

Product programme

Material analysis/upstreamof kiln feed system

POLAB® raw meal samplingPreheating

DOPOL® ’90 cyclone preheaterCalcining

PREPOL® calcining systemMaterial analysis/hot meal

POLAB® hot meal sampling

BurningPOLRO® two-support kilnTwo-support kiln (girth gear)Three-support kiln (girth gear)BurnerKiln Temperature Scanner

CoolingPOLYTRACK® clinker coolerWhite cement clinker cooler

Material analysis/clinkerPOLAB® clinker sampling

18 Cement manufacturing.From the clinker store to cement dispatch.

In the final process stage ofcement manufacturing, thecement clinker is extracted fromthe clinker stores or silos andfinely ground together withapprox. 5 % gypsum as settingregulator and possibly with otherhydraulic materials also added.The fineness determines thegrade of cement and thus thestrength of the produced concrete.The different types and strengthclasses of cement are stored in separate silos and then dis-charged into loading systems.

In recent years, cement manu-facturers have significantlyincreased their product ranges –a trend that can be expected tocontinue for economical andecological reasons. One aspectis the substitution of cementclinker through secondary com-ponents that are waste materialsfrom other industries or that occurnaturally. The first categoryincludes granulated blast furnaceslags from the iron producingindustry and fly ashes from powerstation firing systems, whilenatural pozzolana and limestoneare examples for the second

category. Gypsum from flue gaspurification systems can also beused instead of natural gypsumor anhydrite. This substitutionnot only reduces the capital costand operating expense but alsorelieves the environment. Theend consumer benefits from theuse of these so-called second-ary materials by receiving com-posite cements with superiorproperties. Cements containingblast furnace slag, for instance,give off less heat when setting,shrink less and are more resist-ant to sulphate than Portlandcement.

However, the increasing diversityof cement components, thesteadily rising production capa-cities and the requirement forplants to be capable of produc-ing different cement types alsolead to increased complexity ofthe production systems. Plantplanners therefore have to takecare that a number of criteriaare simultaneously brought intoan optimum balance. These arethe grinding resistance of theindividual components, their dif-fering finenesses in the cement,

the thermal engineering of theplant to ensure the drying ofmoist components with wasteheat and the crucially importantattainment of the correct gran-ulometric distribution for therequired cement properties. As the basis for designing thecement grinding system, Poly-sius conducts laboratory tests to determine the grinding resist-ance.

Supplementing a great depth ofprocess engineering know-how,Polysius also possesses thebroad portfolio of core equip-ment that is necessary for imple-menting plant owners’ require-ments. In the grinding technolo-gy sector, these are tube mills,roller mills, high-pressure grind-ing rolls and separators. Theability to suitably engineer anddesign these machines for dailyuse under rough operating con-ditions demands great expertisein mechanical engineering, espe-cially in the disciplines drive sys-tems, bearing assemblies andlubrication systems, wear pro-tection and dynamically highlyloaded components.

Clinker silo for37,850 t storagecapacity inArgentina.

Tube mill for cement grinding in Argentina.Tube mills with drive powers of up to 10,000 kW are used in the cement industry, while the oreprocessing industry uses tube mills with more than 15,000 kW. Up to loads of approx. 10,000 kNper bearing, these mills are supported on hydro-dynamic sliding shoe bearings.

Roller mill for cement grinding in Mexico. DOROL® roller mills are used for ultrafine grinding of cement clinker,granulated blast furnace slag, trass, pozzolana etc. and have through-put rates of up to approx. 200 tph.

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Roller mill forgranulated

blast furnaceslag grinding

in China.

3 cement silos (9,000 m3 storage vol-

ume each) includingloading stations for

rail vehicles.

POLYCOM® high-pressure grinding roll including SEPOL®

high-efficiency separator for cement finish grinding in Belgium.For energy saving pressure comminution, Polysius installs high-pressure

grinding rolls with material throughput rates of more than 1,000 tph. For this purpose, we co-operated with foundries to develop rolls that

provide reliable operation under the required high grinding pressures.

Product programme

StorageClinker storeClinker silo

GrindingPOLYCOM®/grinding systemsTube mill/grinding systemsDOROL® roller millSEPOL® high-efficiency separatorSTATOPOL®-C separatorFines coolerFlash dryer

Flow regulation/conveyingAEROPOL® vertical conveyorPOLDENS® pressure-vessel conveyor

Material analysis/finished productPOLAB® cement sampling

StorageSilo

POLAB®

POLAB®

POLAB®

POLAB®

POLAB®

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Analysis points in a cement plant. Comprehensive knowledge of material compositions and properties before and during the production process form the basis for optimum process control.

POLCID® NT masterprocess control system

The process control sys-tem POLCID® NT offersusers a Windows-basedapplication softwarespecially developed andspecifically structured forthe cement industry.

POLCID® NT works onthe client-server princi-ple. The digitised infor-mation from the sensors

is recorded via field bus systems and processeddirectly in the control system computer. The sys-tem’s modular design and open architecture offerendless possibilities for adaptation.

IMS information management system

The IMS system is a powerful product that centrally archives, manages and analyses datafrom different areas of operations and makesthem available for further processing.

POLAB® CNA raw material analyser

The POLAB® CNA uses an electronically regu-lated neutron tube as a radiation source for theonline chemical analysis of raw materials. Theadvantages of a neutron tube are that it can be switched on and off and it delivers mono-chromatic neutrons of equal intensity throughout its entire service life. The system thus furnishesconstant ultra-precise measurement results, providing process-relevant oxide concentrationdata for the entire flow of material passing the analyser, without requiring pre-treatment of the material.

POLAB® AOT online analyser

Installed directly downstream of the raw mill, thePOLAB® AOT takes raw meal samples at short

intervals, prepares and analyses them and thencontrols the raw material composition and millfeeding via an adaptive controller. This ensuresthat the raw meal fed to the silo is of constantoptimum quality.

POLAB® APM – the automatic sample preparation module of all POLAB® systems

The essential precondition for material analysisby spectrometer and diffractometer is reliablesample preparation. POLAB® APM, the mostcompact automatic sample preparation modulein the world, integrates a number of predefinedpreparation programs. In addition, individualizedprograms can be defined for special analysis.

POLAB® ACT – the laboratory automation system

... for small and medium sized applications – but for big demands. The process samples(either automatically supplied via a pneumaticdelivery tube network, or fed in manually, anddosed on the basis of defined procedures) areprepared either for routine analysis, Rietveldanalysis or fineness analysis in the integratedlaser granulometer.

POLAB® AMT sample preparation and analysis system

POLAB® AMT optimally integrates and harmonis-es all required sample preparation and analysiscomponents – and still has an extremely smallfootprint. The AMT configuration is designed toensure the highest standard of efficiency andprovides impressively high sample throughputrates, easy operation and consistent modularity.The sample reception and preparation units, aswell as the analyser units (such as fluorescencespectrometer, diffractometer, laser granulometerand colour difference analyser) are all placedwithin reach of the robot. The robot supplies allthe analyser units with prepared samples andthus supports simultaneous analyses.

POLAB®

21Factory automation.Process control and quality assurance.

Due to the outstanding properties of cement as a building material and to the fact that it is recognisedas being ecologically safe, the number of available types will continue to grow and specialised highlyeffective products will establish themselves on the market.

This demands production plants with excellent quality assurance systems and a high degree ofautomation. The range of products supplied by Polysius includes process monitoring, control, regu-lation and optimisation systems, as well as systems for ensuring constant product quality. All ofthese are of consistent modular design and therefore adaptable to individual plant requirements. In addition, Polysius plans and installs electrical equipment for individual machines and completeplants.