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ThyssenKrupp Polysius A company of ThyssenKrupp Technologies Hot metal desulphurisation plants.
PRO_Roheisen_gb_0505.fh 30.05.2005 14:02 Uhr Seite 1
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Thys
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rupp
PolysiusA company ofThyssenKruppTechnologies
Hot metal desulphurisation plants.
Injection lancein the lance insertionunit after theinjection procedure.
Hot metal desulphurisationin an Austrian steel works with
two treatment stations.
Metallurgical process computer in thecontrol room. (Centre) Slag skimmingmachine also remotely controllable fromthe control room.
Delivery programme
Polysius offers turnkey hotmetal desulphurisation plantswhich are precisely tailoredto the production range of therespective steel works.
All the plant components comefrom a single source, rangingfrom the tank vehicle unloadingstationvia thesilosforstor-ing the desulphurisationreagents, the dispensers, theinjection systems, the lanceinsertion and lance changingunits, the slag skimming ma-chines right up to the controlroom and electrical equipment,the MEPOL pressure-vesselconveyors and the metallurgicalprocess computers.
The Polysius scope of supplyalso includes the extension,modernisation and optimisationof existing hot metal desulphuri-sation plants, as well as fieldassembly, commissioning andsuch services as plant andprocess inspection.
Polysius AGGraf-Galen-Strae 1759269 Beckum/DeutschlandTel.: +49 - (0)25 25 - 99-0Fax: +49 - (0)25 25 - 99-2100e-mail: [email protected]
A company ofThyssenKrupp Technologies
Polysius Ltd.The Brackens, London RoadAscot, Berks. SL5 8BE/EnglandTel.: +44 - (0)13 44 - 88 41 61Fax: +44 - (0)13 44 - 88 64 38e-mail: [email protected]
Polysius S.A.S.770, Avenue Guilibert de la Lauzire13290 Aix en Provence/FranceTel.: +33 - 4 42 - 16 61 00Fax: +33 - 4 42 - 16 61 02e-mail: [email protected]
Polysius S.A.Pl. Manuel Gmez Moreno, s/nEdificio Bronce28020 Madrid/EspaaTel.: +34 - (0)91- 5 55 80 40Fax: +34 - (0)91- 5 55 47 89e-mail: [email protected]
Polysius Corp.180 Interstate North ParkwayAtlanta, GA 30339-2194/USATel.: +1 - 7 70 - 955 - 36 60Fax: +1 - 7 70 - 955 - 87 89e-mail: [email protected]
Polysius de Mxico S.A. de C.V.Sierra Gamn # 120, 8 PisoLomas de Chapultepec11000 Mxico, D.F. /MxicoTel.: +52 - (0)55 - 52 84 01 00Fax: +52 - (0)55 - 52 84 02 73e-mail: [email protected]
Polysius do Brasil Ltda.Av. Brigadeiro Faria Lima 1572 - 14 andarJardim Paulistano01452-908 So Paulo/SP/BrasilTel.: +55 - (0)11 - 3811 45 00Fax: +55 - (0)11 - 3097 81 44e-mail: [email protected]
Polysius de Argentina S.A.25 de Mayo 596 - Piso 14(1002) Buenos Aires/ArgentinaTel.: +54-11-43 11 60 46/7Fax: +54-11-43 11 60 45e-mail: [email protected]
Polysiusa division of ThyssenKrupp Engineering (Pty.) Ltd.71 Nanyuki RoadSunninghill 2157South AfricaTel.: +27 - (0)11- 236 -10 00Fax: +27 - (0)11- 236 -13 01e-mail: [email protected]
Polysius Asia Pacific Pte. Ltd.3 International Business Park# 06-08 Nordic European CentreSingapore 609927Tel.: +65 - 68 9016 28Fax: +65 - 68 9016 35e-mail: [email protected]
Polysiusa division of ThyssenKrupp Engineering(Australia) Pty. Ltd.8 Business Park DriveNotting Hill, Vic. 3168/AustraliaTel.: +61- (0)3 - 95 58 86 66Fax: +61- (0)3 - 95 58 84 88e-mail: [email protected] 15
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Ladle car withtilting device.
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Economical hot metal desulphurisation plantsfrom Polysius the market leader.
Mon
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(Conveying rate)
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1 Control of top pressure2 Control of fluidisation gas3 Discharge control valve4 Measurement of injection
rate (discharge weighing)5 Control of conveying gas
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Variants of thedip-lance method.
Mask of aCoinjection plant.
Coinjection dispenserin a Chinese steel plant. MEPOL principle.
Top left:Outlet control unit of aMEPOL conveyor.
Wear-resistantdischarge controlvalve.
MEFLEX hose forparticularly abrasive
materials.
Functional diagram of ahot metal desulphurisation plantwith two treatment stations.
The production of high-gradesteel qualities is no longerconceivable without targeteddesulphurisation of the hotmetal in ladles outside the blastfurnace process.
For hot metal desulphurisationoutside the blast furnace, thedip-lance method is the mostreliable and the most econom-ical metallurgical process.For this reason, most steelworks world-wide reduce thehot metal's sulphur content incharging and transfer ladles withthe dip-lance injection process.
For more than 35 years Polysiushas been supplying turnkey hotmetal desulphurisation plants
operating with the dip-lancemethod. Thanks to the
advanced planttechnology
and our companys compre-hensive process know-howgained from the installation ofover 50 hot metal desulphuri-sation plants all around theworld, Polysius is the marketleader on this sector.
Process technology
What makes the dip-lance pro-cess so effective for hot metaldesulphurisation is the pneu-matic injection of fine-graineddesulphurisation reagents intothe molten metal with highdosing precision via refractorylances. This causes an intimate
mixing of the desulphuri-sation reagents withthe hot metal. Thedip-lance method canreliably reduce the
sulphur content of the hotmetal to figures as low as
0.001%.
It allows the use ofseveral desulphurisa-tion reagents, such
as lime, calcium car-bide and magnesium, whichremove the sulphur from thehot metal by chemical reactionand convert it to the slag.
There are many ways of con-trolling the dip-lance process tominimise the operating costs.One is to vary the desulphu-risation reagent injection rate,which must take account of thefact that the effectiveness of
hot metal desulphurisationis proportionally opposite tothe desulphurisation reagentinjection rate.
Another way is to inject differ-ent desulphurisation reagentsduring one hot metal treat-ment session. The reagentscan be injected into the moltenmetal individually, simultane-ously or at injection intervalswith the Monoinjection, Co-injection or Multi-injection pro-cesses.
Which of the above processescauses the lowest operatingcosts depends on the oper-ating and production conditions(such as the weight, tempera-ture and sulphur content ofthe hot metal, the requiredfinal sulphur content, the blastfurnace slag and the injectiontime), which can vary fromcharge to charge.
For the selection of the optimuminjection process according tothe production conditions acomprehensive knowledge ofthe metallurgy of the hot metaldesulphurisation process isrequired.
In todays computer-aided hotmetal desulphurisation plants,selection of the optimum pro-cess is performed by a metall-urgical process computer. Thequality of the process is thusdetermined by the quality of themetallurgical process computerand thus by the programmedprocess knowhow.
Due to the large number ofplants already supplied, Poly-sius possesses comprehensivemetallurgical know-how. Thisis implemented in the metal-lurgical process computer which is an in-house develop-ment and thus benefits ournumerous customers all aroundthe world. The metallurgicalprogram contains all mathe-matical equations which reflectthe regularities of hot metaldesulphurisation, so that everyhot metal charge is individualdesulphurised with the optimumprocess.
Plant technology
To minimise the operating costs of the hot metaldesulphurisation process, Polysius offers a specialinjection technology under the proprietary nameMEPOL.
The core item of the MEPOL technology is thepressure-vessel conveyor with five harmonisedmeasurement and control units for measuring,monitoring and controlling all operating param-eters that have an influence on the processand the dosing precision.
Thus the Polysius MEPOL technology ensures ahigh dosing accuracy for each desulphurisationreagent during the whole injection process.
Combined with the metallurgical processcomputer the MEPOL systems ensure thecost-optimised desulphurisation of eachhot metal charge.
High operating reliability and plant availability incombination with favourable operating costs andhigh process flexibility are the most importantcriteria for the quality of the hot metal desulphu-risation plant:
In plants designed by Polysius, such importantcomponents as the discharge control valveand the pressure controller are made of wear-resistant ceramic to ensure a high plant avail-ability. At wear-intensive locations (e.g. at pipebends) MEFLEX hoses are used.
PRO_Roheisen_gb_0505.fh 30.05.2005 14:02 Uhr Seite 1
Probedruck
C M Y CM MY CY CMY K
Thys
senK
rupp
PolysiusA company ofThyssenKruppTechnologies
Hot metal desulphurisation plants.
Injection lancein the lance insertionunit after theinjection procedure.
Hot metal desulphurisationin an Austrian steel works with
two treatment stations.
Metallurgical process computer in thecontrol room. (Centre) Slag skimmingmachine also remotely controllable fromthe control room.
Delivery programme
Polysius offers turnkey hotmetal desulphurisation plantswhich are precisely tailoredto the production range of therespective steel works.
All the plant components comefrom a single source, rangingfrom the tank vehicle unloadingstationvia thesilosforstor-ing the desulphurisationreagents, the dispensers, theinjection systems, the lanceinsertion and lance changingunits, the slag skimming ma-chines right up to the controlroom and electrical equipment,the MEPOL pressure-vesselconveyors and the metallurgicalprocess computers.
The Polysius scope of supplyalso includes the extension,modernisation and optimisationof existing hot metal desulphuri-sation plants, as well as fieldassembly, commissioning andsuch services as plant andprocess inspection.
Polysius AGGraf-Galen-Strae 1759269 Beckum/DeutschlandTel.: +49 - (0)25 25 - 99-0Fax: +49 - (0)25 25 - 99-2100e-mail: [email protected]
A company ofThyssenKrupp Technologies
Polysius Ltd.The Brackens, London RoadAscot, Berks. SL5 8BE/EnglandTel.: +44 - (0)13 44 - 88 41 61Fax: +44 - (0)13 44 - 88 64 38e-mail: [email protected]
Polysius S.A.S.770, Avenue Guilibert de la Lauzire13290 Aix en Provence/FranceTel.: +33 - 4 42 - 16 61 00Fax: +33 - 4 42 - 16 61 02e-mail: [email protected]
Polysius S.A.Pl. Manuel Gmez Moreno, s/nEdificio Bronce28020 Madrid/EspaaTel.: +34 - (0)91- 5 55 80 40Fax: +34 - (0)91- 5 55 47 89e-mail: [email protected]
Polysius Corp.180 Interstate North ParkwayAtlanta, GA 30339-2194/USATel.: +1 - 7 70 - 955 - 36 60Fax: +1 - 7 70 - 955 - 87 89e-mail: [email protected]
Polysius de Mxico S.A. de C.V.Sierra Gamn # 120, 8 PisoLomas de Chapultepec11000 Mxico, D.F. /MxicoTel.: +52 - (0)55 - 52 84 01 00Fax: +52 - (0)55 - 52 84 02 73e-mail: [email protected]
Polysius do Brasil Ltda.Av. Brigadeiro Faria Lima 1572 - 14 andarJardim Paulistano01452-908 So Paulo/SP/BrasilTel.: +55 - (0)11 - 3811 45 00Fax: +55 - (0)11 - 3097 81 44e-mail: [email protected]
Polysius de Argentina S.A.25 de Mayo 596 - Piso 14(1002) Buenos Aires/ArgentinaTel.: +54-11-43 11 60 46/7Fax: +54-11-43 11 60 45e-mail: [email protected]
Polysiusa division of ThyssenKrupp Engineering (Pty.) Ltd.71 Nanyuki RoadSunninghill 2157South AfricaTel.: +27 - (0)11- 236 -10 00Fax: +27 - (0)11- 236 -13 01e-mail: [email protected]
Polysius Asia Pacific Pte. Ltd.3 International Business Park# 06-08 Nordic European CentreSingapore 609927Tel.: +65 - 68 9016 28Fax: +65 - 68 9016 35e-mail: [email protected]
Polysiusa division of ThyssenKrupp Engineering(Australia) Pty. Ltd.8 Business Park DriveNotting Hill, Vic. 3168/AustraliaTel.: +61- (0)3 - 95 58 86 66Fax: +61- (0)3 - 95 58 84 88e-mail: [email protected] 15
94/G
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rinte
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. . . from a single source right downto the details.
Ladle car withtilting device.
![Use of Hot Metal With High Phosphorous Content in …...blast furnace is naturally converted into the hot metal by 90–100%. The only possibility to limit the [%P] of the hot metal](https://static.documents.pub/doc/80x56/5f4652d286652e476d5bee5e/use-of-hot-metal-with-high-phosphorous-content-in-blast-furnace-is-naturally.jpg)
