IT8322308A1 - Steel melting plant with two furnace vessels - Google Patents
Steel melting plant with two furnace vessels Download PDFInfo
- Publication number
- IT8322308A1 IT8322308A1 IT1983A22308A IT2230883A IT8322308A1 IT 8322308 A1 IT8322308 A1 IT 8322308A1 IT 1983A22308 A IT1983A22308 A IT 1983A22308A IT 2230883 A IT2230883 A IT 2230883A IT 8322308 A1 IT8322308 A1 IT 8322308A1
- Authority
- IT
- Italy
- Prior art keywords
- furnace
- gas
- gas pipe
- container
- fact
- Prior art date
Links
- 238000002844 melting Methods 0.000 title claims description 15
- 230000008018 melting Effects 0.000 title claims description 15
- 229910000831 Steel Inorganic materials 0.000 title description 8
- 239000010959 steel Substances 0.000 title description 8
- 239000000463 material Substances 0.000 claims description 9
- 238000003723 Smelting Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 2
- HMJIYCCIJYRONP-UHFFFAOYSA-N (+-)-Isradipine Chemical compound COC(=O)C1=C(C)NC(C)=C(C(=O)OC(C)C)C1C1=CC=CC2=NON=C12 HMJIYCCIJYRONP-UHFFFAOYSA-N 0.000 claims 1
- 239000007789 gas Substances 0.000 description 23
- 239000007921 spray Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 101150006573 PAN1 gene Proteins 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/5252—Manufacture of steel in electric furnaces in an electrically heated multi-chamber furnace, a combination of electric furnaces or an electric furnace arranged for associated working with a non electric furnace
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/56—Manufacture of steel by other methods
- C21C5/562—Manufacture of steel by other methods starting from scrap
- C21C5/565—Preheating of scrap
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/04—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces of multiple-hearth type; of multiple-chamber type; Combinations of hearth-type furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
- F27B3/085—Arc furnaces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Details (AREA)
- Processing Of Solid Wastes (AREA)
Description
D E S C R I Z I O N E DESCRIPTION
dell.' invenzione industriale dal titolo: of. ' industrial invention entitled:
"Impianto per la fusione dell'acciaio con due recipienti del forno" "Steel melting plant with two furnace vessels"
R I A S S U N T O SUMMARY
L'invenzione concerne un impianto per la fusione dell'acciaio con due recipienti fissi del forno, disposti su una piattaforma del forno, specialmente per la fusione di rottame, con coperchi intercambia bili dei recipienti, dei quali uno porta il dispositivo di riscaldamento (elettrodi), laddove alternativamente nel primo oppure nel secondo recipiente si svolge il processo di fusione, mentre nell'altro recipiente viene preparato il materiale da fondere. Per eseguire un impianto per la fusione dell?acciaio del genere menzionato all'inizio, in modo che la conduttura, servente allo scarico dei gas di scarico, non venga a contatto con la massa fusa o con spruzzi di massa fusa e sbocchi d'altro canto nell'altro rispettivo recipiente del forno, in modo che sia possibile sfruttare in maniera ottimale il calore dei gas di scarico, viene proposto che su ogni coperchio ? disposta una curva di aspirazione raccordabile ad una conduttura del gas, e inoltre che la conduttura del gas sbocca rispettivamente nella zona martellare inferiore dell'altro recipiente, e da ogni conduttura del gas ? diramata una conduttura secondaria portante verso un dispositivo depolverizzatore,e inoltre ? previsto che nella conduttura del gas - guardando in direzione della corrente del gas - a valle del punto di diramazione dalla conduttura secondaria ? disposta una valvola di sbarramento del gas e nello sbocco della conduttura del gas nel forno ? disposto un dispositivo di chiusura, che impedisce la fuoriuscita dal forno di materiale caricato o fuso (Figura). The invention relates to a system for melting steel with two fixed furnace containers, arranged on a platform of the furnace, especially for melting scrap, with interchangeable lids for the containers, one of which carries the heating device (electrodes ), where the melting process takes place alternatively in the first or in the second vessel, while the material to be melted is prepared in the other vessel. To carry out a system for the melting of steel of the kind mentioned at the beginning, so that the pipeline, serving the exhaust gases, does not come into contact with the molten mass or with sprays of molten mass and outlets of other in the other respective container of the oven, so that it is possible to optimally exploit the heat of the exhaust gases, it is proposed that on each lid? a suction curve that can be connected to a gas pipe is arranged, and furthermore that the gas pipe opens respectively into the lower hammering area of the other container, and from each gas pipe? branched off a supporting secondary pipeline to a dedusting device, and furthermore? expected that in the gas pipeline - looking in the direction of the gas stream - downstream of the branch point from the secondary pipeline? a gas shut-off valve is arranged and in the outlet of the gas line in the furnace? disposed a closure device, which prevents the discharge from the furnace of loaded or melted material (Figure).
DE SCR IZ IONE DESCRIPTION
L'invenzione concerne un impianto per la fusione dell'acciaio avente due recipienti del forno fissi, di_ sposti su una piattaforma del forno, conformemente alla parte introduttiva della rivendicazione. The invention relates to a steel smelting plant having two fixed furnace vessels disposed on a furnace platform in accordance with the introductory part of the claim.
Dalla DE-OS 31 02 499 ? noto il fatto di operare in un impianto per la fusione dell'acciaio con due recipienti del forno, sui quali rispettivamente ? applicabile il coperchio, contenente gli elettrodi, per la fusione della carica. Mediante il funzionamento alternato dei recipienti ? stato possibile aumentare sostan zialmente la potenza dell?impianto, poich? il forno che di volta in volta non effettua la fusione pu? essere riempito ed il materiale immesso viene preriscaldato dal calore residuo del recipiente. From DE-OS 31 02 499? known the fact of operating in a plant for the melting of steel with two vessels of the furnace, on which respectively? applicable the lid, containing the electrodes, for the melting of the charge. By alternating operation of the containers? was it possible to substantially increase the power of the system, since? the oven that from time to time does not perform the fusion can? be filled and the material introduced is preheated by the residual heat of the container.
Dalla pratica ? anche noto il fatto di collegare fra di loro due recipienti del forno mediante una conduttura, cos? che i gas di scarico che si sviluppano durante la fusione possono essere portati attraverso il secondo forno prima di essere allontanati dall'impianto. In tal modo il materiale preparato per la fusione - situato nel secondo recipiente del forno -viene riscaldato pi? fortemente di quanto possibile tramite il calore residuo del recipiente. From practice? also known is the fact of connecting two vessels of the oven to each other by means of a conduit, so? that the exhaust gases that develop during the melting can be carried through the second furnace before being removed from the plant. In this way the material prepared for melting - located in the second vessel of the furnace - is heated more? as strongly as possible by the residual heat of the container.
In particolare ? per? svantaggioso il fatto che la conduttura colleganta i due recipienti del forno pu? essere intasata o danneggiata dalla massa fusa o dagli spruzzi di massa fusa, quando essa sbocca nel mantello del forno ad un'altezza tale che si verifica ancora un passaggio del gas il pi? possibile buono ed uniforme attraverso il materiale da fondere. In particular ? for? disadvantageous the fact that the pipeline connects the two containers of the oven can? be clogged or damaged by the molten mass or by the splashes of molten mass, when it flows into the shell of the furnace at such a height that there is still a passage of the gas the most? possible good and uniform through the material to be melted.
L'invenzione si pone il compito di eseguire l'impianto per la fusione dell'acciaio del genera menzionato all'inizio, in modo che la conduttura che adduca i gas di scarico caldi sbocca nell?altro rispettivo recipiente del forno, in modo che ? possibile sfruttare in maniera ottimale il calore dei gas di sca rico, laddove la conduttura del gas non pu? essere intasata da particelle di carica o spruzzi di massa fusa. The invention has the task of carrying out the plant for the smelting of the steel of the generation mentioned at the beginning, in such a way that the duct which carries the hot exhaust gases opens into the other respective vessel of the furnace, so that? possible to exploit in an optimal way the heat of the exhaust gases, where the gas pipeline cannot? be clogged with filler particles or molten spray.
Questo problema viene risolto secondo l'invenzione mediante le caratteristiche indicate nel-la parte caratterizzante della rivendicazione. This problem is solved according to the invention by means of the characteristics indicated in the characterizing part of the claim.
Nell'impianto secondo l'invenzione lo scarico dei gas dal recipiente dal forno avviene attraverso il coperchio e quindi a grande distanza dalla massa fusa? In the plant according to the invention, the discharge of the gases from the container from the furnace takes place through the lid and therefore at a great distance from the melt.
D'altro canto la conduttura del gas nella zona martellare inferiore sbocca nel recipiente del forno, cos? che i gas caldi ascendono attraverso il materiale da fondere, situato in questo recipiente del forno, prima di essere addotti al dispositivo depolverizzatore. La corrente del gas viene comandata mediante valvole di sbarramento corrispondentemente disposta. L'entrata di particelle di carica o di spruzzi di massa fusa nell'imbocco della conduttura del gas viene impedita da dispositivi di chiusura disposti nell'im bocco. On the other hand, the gas line in the lower hammering area opens into the oven vessel, so? that the hot gases ascend through the material to be melted, located in this vessel of the furnace, before being conveyed to the dedusting device. The gas flow is controlled by means of correspondingly arranged shut-off valves. The entry of filler particles or molten spray into the inlet of the gas line is prevented by closing devices located in the inlet.
L'invenzione verr? illustrata nel seguito in base ad un impianto di fusione rappresentato schematicamente. Will the invention come? illustrated below on the basis of a fusion plant shown schematically.
L?impianto per la fusione dell?acciaio presenta due recipienti fissi 1, 2 del forno. Si supponga che il recipiente 1 del forno destro nel disegno debba effettuare la fusione. Sul recipiente 1 del forno ? collocato il coperchio 3 con gli elettrodi 5. L'altro recipiente 2 del forno ? chiuso da un semplice coperchio 4. In esso si trova la successiva carica (rottame) che dovr? essere preparata per l'operazione di fusione. I gas di scarico che si producono durante la fusione nel recipiente 1 del forno vengono prelevati per mezzo della curva di aspirazione 6 situata nel coperchio 3 ed immessi attraverso la conduttura 8 nella zona martellare inferiore del secondo recipiente 2 del forno. Dopo il passaggio attraverso il materiale che si trova in questo recipiente il gas viene scaricato attraverso la curva di aspirazione 6? nel coperchio 4 ed addotto al dispositivo depolverizzatore 12? mediante la conduttura secondaria 13?. Con la fusione nel recipiente 2 del forno il gas di scarico corrispondentemente mediante la conduttura di derivazione 13 viene addotto al dispositivo depolverizzatore 12. Valvole di sbarramento 10, 11 rispettivamente 10', 11' liberano le rispettive condutture. Nell'imbocco della conduttura del gas nella zona mantellare inferiore The steel smelting plant has two fixed vessels 1, 2 of the furnace. Let us assume that the vessel 1 of the right oven in the drawing is to perform the melting. On pan 1 of the oven? placed lid 3 with electrodes 5. The other container 2 of the oven? closed by a simple lid 4. In it is the next charge (scrap) that will have to? be prepared for the melting operation. The exhaust gases produced during melting in the furnace 1 vessel are taken by means of the suction curve 6 located in the lid 3 and introduced through the duct 8 into the lower hammering area of the second vessel 2 of the furnace. After passing through the material in this container, the gas is discharged via the suction curve 6? in the cover 4 and supplied to the dedusting device 12? through the secondary pipeline 13 ?. With the melting in the vessel 2 of the furnace, the exhaust gas correspondingly by means of the branch pipe 13 is conveyed to the dedusting device 12. Barrier valves 10, 11 respectively 10 ', 11' release the respective pipes. In the entrance to the gas pipe in the lower mantle area
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823232139 DE3232139A1 (en) | 1982-08-26 | 1982-08-26 | Steel melting plant with two furnace vessels |
Publications (3)
Publication Number | Publication Date |
---|---|
IT8322308A0 IT8322308A0 (en) | 1983-07-28 |
IT8322308A1 true IT8322308A1 (en) | 1985-01-28 |
IT1170185B IT1170185B (en) | 1987-06-03 |
Family
ID=6171993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT2230883A IT1170185B (en) | 1982-08-26 | 1983-07-28 | PLANT FOR MELTING STEEL WITH TWO OVEN CONTAINERS |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5938582A (en) |
DE (1) | DE3232139A1 (en) |
ES (1) | ES525153A0 (en) |
IT (1) | IT1170185B (en) |
SE (1) | SE8303974L (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6254013A (en) * | 1985-09-03 | 1987-03-09 | Ishikawajima Harima Heavy Ind Co Ltd | Method and apparatus for melting scrap |
JPS6280489A (en) * | 1985-10-03 | 1987-04-13 | 石川島播磨重工業株式会社 | Arc furnace facility |
JPH0746034B2 (en) * | 1985-12-09 | 1995-05-17 | 石川島播磨重工業株式会社 | Double melting equipment |
DE4015916A1 (en) * | 1990-05-17 | 1991-11-21 | Fuchs Technology Ag | MELTING UNIT WITH TWO MELTING OVENS arranged next to each other |
DE4138118A1 (en) * | 1991-11-19 | 1993-05-27 | Fuchs Systemtechnik Gmbh | Melting-down and refining unit for steel - consists of two adjacent furnaces with lid mechanisms operated simultaneously, for melting down and refining-overheating the melt |
DE4302285C3 (en) * | 1993-01-25 | 1998-07-09 | Mannesmann Ag | Method and device for operating a two-furnace system |
FR2705767B1 (en) * | 1993-05-27 | 1995-07-21 | Lorraine Laminage | Process and installation for producing liquid steel from ferrous materials rich in carbonaceous materials. |
DE4445209C2 (en) * | 1994-12-17 | 1999-01-21 | Schloemann Siemag Ag | Method and device for operating a double-vessel arc furnace |
CN103801667B (en) * | 2012-11-08 | 2016-01-06 | 沈阳中北真空科技有限公司 | RE permanent magnetic alloy vacuum induction melting rapid hardening equipment |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5947831B2 (en) * | 1976-01-30 | 1984-11-21 | 東伸製鋼株式会社 | Electric furnace steelmaking equipment |
JPS5677684A (en) * | 1979-11-27 | 1981-06-26 | Nakayama Steel Works Ltd | Recovering device for highhtemperature exhaust gas of single or plural melting furnace for steel manufacture |
-
1982
- 1982-08-26 DE DE19823232139 patent/DE3232139A1/en not_active Withdrawn
-
1983
- 1983-07-14 SE SE8303974A patent/SE8303974L/en not_active Application Discontinuation
- 1983-07-22 JP JP58134232A patent/JPS5938582A/en active Pending
- 1983-07-28 IT IT2230883A patent/IT1170185B/en active
- 1983-08-25 ES ES525153A patent/ES525153A0/en active Granted
Also Published As
Publication number | Publication date |
---|---|
ES8405133A1 (en) | 1984-05-16 |
IT8322308A0 (en) | 1983-07-28 |
SE8303974D0 (en) | 1983-07-14 |
DE3232139A1 (en) | 1984-03-08 |
JPS5938582A (en) | 1984-03-02 |
SE8303974L (en) | 1984-02-27 |
ES525153A0 (en) | 1984-05-16 |
IT1170185B (en) | 1987-06-03 |
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