NO842671L - DISPOSAL DEVICE FOR METALLURGICAL Ovens - Google Patents
DISPOSAL DEVICE FOR METALLURGICAL OvensInfo
- Publication number
- NO842671L NO842671L NO84842671A NO842671A NO842671L NO 842671 L NO842671 L NO 842671L NO 84842671 A NO84842671 A NO 84842671A NO 842671 A NO842671 A NO 842671A NO 842671 L NO842671 L NO 842671L
- Authority
- NO
- Norway
- Prior art keywords
- pipe
- loading
- deposition
- charging
- tube
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 14
- 230000008021 deposition Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 238000010891 electric arc Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 6
- 238000011161 development Methods 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract 3
- 238000000576 coating method Methods 0.000 abstract 3
- 239000002893 slag Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 239000000969 carrier Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010310 metallurgical process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C21C5/527—Charging of the electric furnace
-
- 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
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
- F27B3/18—Arrangements of devices for charging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/0025—Charging or loading melting furnaces with material in the solid state
- F27D3/0032—Charging or loading melting furnaces with material in the solid state using an air-lock
-
- 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)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
Det beskrives en beskikningsinnretning for metallurgiske ovner,. særlig for elektro-reduksjons- eller lysbueovner, med et bes-kikningsrør (4) som på tett måte er ført gjennom ovnstaket,. hvori området ved dette er tilknyttet en beskikningsgods-tilføring. For å få en liten fallhøyde for fingodset, med tilhørende liten støvutvikling, samtidig som varmebelastningen på innretningen skal være liten, foreslås det at beskikningsrøret (4) ved en beskikning senkes ned til i. nærheten av badoverflaten i ovnsrommet (3), idet beskik-ningsrøret ved sin fra ovnsrommet vendte ende har en åpning (6) som i beskikningsrørets (4) nedsenkede stilling vil. flukte med utløpsåpningen til et mot beskikningsrørets (4). vegg anliggende beskikningsgods-tilføringsrør (8).A coating device for metallurgical furnaces is described. in particular for electro-reduction or arc furnaces, with a viewing tube (4) which is passed through the furnace roof in a tight manner. in which the area by this is connected to a supply of supply goods. In order to obtain a small drop height for the fine goods, with associated small dust development, at the same time as the heat load on the device should be small, it is proposed that the coating pipe (4) is lowered to a near the bath surface in the oven compartment (3). the pipe at its end facing away from the furnace space has an opening (6) which in the lowered position of the coating pipe (4) will. align with the outlet opening to one against the beaker (4). wall adjacent fittings supply pipe (8).
Description
Oppfinnelsen vedrører en beskjikningsinnretning for metallurgiske ovner, som angitt i patentkrav l's innledning. The invention relates to a charging device for metallurgical furnaces, as stated in the introduction of patent claim 1.
Mineralske metallbærere og kullstoffbærere har hittil fortrinns-vis blitt ført frem til metallurgisk viderebearbeidelse i store stykker. Den finmasse som fremkommer under utvinningen av mine-ralene har vanligvis blitt ført til slagghauger, eller finmassen har blitt underkastet kompliserte oppredningsprosesser. Mineral metal carriers and carbon carriers have so far preferably been carried forward for metallurgical further processing in large pieces. The fine mass that appears during the extraction of the minerals has usually been taken to slag heaps, or the fine mass has been subjected to complicated settling processes.
Ved mineralutvinningsanlegg fremkommer det mye finmateriale. Side-produkter ved mange metallurgiske fremgangsmåter fremkommer like-ledes i finkornform. Av økonomiske grunner er det idag imidler-tid nødvendig å tilføre finmassen eller fingodset direkte til den metallurgiske prosess. Dessuten er det ønskelig å føre mange materialtyper i finkornform inn i prosessen, for derved å få et raskere reaksjonsforløp. At mineral extraction plants, a lot of fine material is produced. Side products from many metallurgical processes also appear in fine grain form. For economic reasons, however, it is now necessary to add the fines or fines directly to the metallurgical process. In addition, it is desirable to feed many types of material in fine-grained form into the process, in order to obtain a faster course of reaction.
En egenart ved disse prosesser for bearbeidelse av finkornet materiale er at fremgangsmåtene innbefatter et slaggbad, som ikke eller bare i liten utstrekning er tildekket med beskjikningsgods eller finmateriale. De metallurgiske reaksjoner foregår i og/ eller på slagget. Fingodset blir ført i porsjoner til slagget. A peculiarity of these processes for processing fine-grained material is that the methods include a slag bath, which is not or only to a small extent covered with slag or fine material. The metallurgical reactions take place in and/or on the slag. The fines are taken in portions to the slag.
Den termiske oppdrift, gasutviklingen og de naturlige påkastings-virvler gir store støvtap, idet støvet går ut sammen med ovn-gassen. Dette gir en metallurgisk ubalanse, fører til lavere metallprodukt-utbytte og gir en overbelastning av gassrenseanleg-gene. The thermal buoyancy, the gas evolution and the natural throw-on vortices cause large dust losses, as the dust exits together with the furnace gas. This creates a metallurgical imbalance, leads to a lower metal product yield and causes an overload of the gas purification plants.
For å beskytte taket i det metallurgiske kar mot slaggbadetsTo protect the roof of the metallurgical vessel from the slag bath
høye varmestrålingsintensitet, må taket ha en beskyttelsesavstand på eksempelvis 1-2 m fra slaggbadet. Beskjikningsrør for be-sk j ikningsgodsets tilførsel, går gjennom dette tak. Beskjik-ningsrør som rager langt inn i ovnsrommet vil riktignok hindre støvtap, men vil til gjengjeld være utsatt for den store heten og vil således ha kort levetid. Vannkjølte beskjikningsrør, som rager langt inn i ovnsrommet, er ikke aktuelle fordi vannlekkasje high heat radiation intensity, the roof must have a protective distance of, for example, 1-2 m from the slag bath. Charging pipes for the supply of charging goods go through this roof. Charging pipes that project far into the furnace chamber will indeed prevent dust loss, but will in return be exposed to the great heat and will thus have a short lifespan. Water-cooled charging pipes, which protrude far into the furnace chamber, are not relevant because of water leakage
vil kunne ødelegge ovnsdriften.will be able to destroy the oven operation.
Hensikten med oppfinnelsen er å tilveiebringe en beskjikningsinnretning for metallurgiske ovner, hvilken innretning gir en lav fallhøyde for fingodset som føres inn, med tilhørende lav støvutvikling. Samtidig skal varmebelastningen på innretningen være liten. The purpose of the invention is to provide a charging device for metallurgical furnaces, which device provides a low drop height for the fines that are introduced, with associated low dust generation. At the same time, the heat load on the device must be small.
Dette oppnås med de trekk som er fremhevet i karakteristikken til patentkrav 1. This is achieved with the features highlighted in the characteristics of patent claim 1.
Foretrukne videreutviklinger vil gå frem av underkravene.Preferred further developments will proceed from the sub-requirements.
Med den nye utforming av beskjikningsinnretningen unngås høye varmebelastninger på beskjikningsrøret, fordi det bare kjøres langt inn i ovnsrommet under selve beskjikningen, og således i en hviletilstand ender i området ved ovnstaket og således er beskyttet mot altfor sterk stråling. Samtidig bevirker avstands-reduksjonen mellom beskjikningsrørets utløpsåpning og badets overflate, at man unngår støvdannelse ved tilføringen av fingodset. En utforming som angitt i krav 3 gjør det mulig å foreta en dosering av beskjikningsgodset, fordi det i tilføringsrøret dan-nes et kammer mellom beskjikningsrørets vegg (i opptrukket til-stand av dette), og skyveren, slik at man her får et doserings-volum. With the new design of the charging device, high heat loads on the charging tube are avoided, because it is only driven far into the furnace chamber during the charging itself, and thus in a state of rest ends up in the area of the furnace ceiling and is thus protected against excessively strong radiation. At the same time, the reduction of the distance between the settling tube's outlet opening and the bath's surface means that dust formation is avoided when the fines are added. A design as stated in claim 3 makes it possible to dose the loading material, because a chamber is formed in the supply pipe between the wall of the loading pipe (when it is pulled up by this), and the pusher, so that here you get a dosing volume.
Oppfinnelsen skal forklares nærmere under henvisning til tegning-en som viser et utførelseseksempel, idet The invention shall be explained in more detail with reference to the drawing which shows an exemplary embodiment, as
figur 1 viser et skjematisk riss av en beskjikningsinnretning i Figure 1 shows a schematic diagram of a charging device i
form av et snitt gjennom et ovnstak, mensform of a section through a furnace roof, while
figur 2 viser en detalj i større målestokk. figure 2 shows a detail on a larger scale.
Beskjikningsinnretningen innbefatter et beskjikningsrør 4 med åpninger 5 og 6. Dette beskjikningsrør kan ved hjelp av en hydraulikksylinder, en elektroinnstillingsanordning eller en annen mekanisk anordning 1 senkes ned til en stilling over smeiten 2 i ovnsrommet 3. Dette nedsenkbare beskjikningsrør 4 går i en tetningssylinder 7 som bevirker en avtetting av systemet mot ovnsrommet 3 og hindrer av ovngass kan trenge ut i ovnhuset. The charging device includes a charging tube 4 with openings 5 and 6. This charging tube can be lowered to a position above the forge 2 in the furnace chamber 3 by means of a hydraulic cylinder, an electrical setting device or another mechanical device 1. This submersible charging tube 4 goes in a sealing cylinder 7 which causes a sealing of the system against the oven chamber 3 and prevents oven gas from penetrating into the oven housing.
Et beskjikningsgods-tilføringsrør 8 er slik tilknyttet tetningssylinderen 7 at beskjikningsgodset 9 bare kan gå inn i beskjik-ningsrøret 4 når dette er senket ned slik at åpningen 6 flukter med tilføringsrørets 8 utløpsåpning. Beskjikningsgodset kan da gå inn i ovnsrommet 3 og ned i smeiten 2. Tilføringsrøret 8 kan i en avstand fra sin utløpsåpning lukkes mot materialbunker-en ved hjelp av en skyver 10, slik at det fremkommer et doser-ingsvolum eller en doseringsstrekning 11. A loading material supply pipe 8 is connected to the sealing cylinder 7 in such a way that the loading material 9 can only enter the loading pipe 4 when it is lowered so that the opening 6 is flush with the outlet opening of the supply pipe 8. The charging material can then enter the furnace chamber 3 and down into the smelter 2. The supply pipe 8 can be closed at a distance from its outlet opening towards the material bunker by means of a pusher 10, so that a dosing volume or a dosing section 11 is produced.
Det nedsenkbare beskjikningsrør 4 styres i tetningssylinderen 7 ved hjelp av styrelister 12, slik at røret ikke kan sette seg fast (figur 2). The submersible deposition tube 4 is controlled in the sealing cylinder 7 by means of guide strips 12, so that the tube cannot become stuck (figure 2).
Beskjikningsrøret 4 har sin utgangsstilling eller hvilestilling i den viste øvre stilling. For beskjikning åpnes skyveren 10. Så snart tilføringsrøret 8 er fylt med beskjikningsgods lukkes skyveren 10. Beskjikningsrøret 4 senkes helt til godset 9 The charging tube 4 has its starting position or resting position in the upper position shown. For loading, the pusher 10 is opened. As soon as the supply pipe 8 is filled with loading goods, the pusher 10 is closed. The loading pipe 4 is lowered all the way to the goods 9
kan gå inn i beskjikningsrøret gjennom åpningen 6 og strømme ned i smeiten 2. Umiddelbart etter at godset er strømmet ut, trek-kes beskjikningsrøret 4 opp og til den viste utgangsstilling. can enter the charging tube through the opening 6 and flow down into the smelter 2. Immediately after the material has flowed out, the charging tube 4 is pulled up and to the starting position shown.
Fyllemengden bestemmes av doseringsstrekningen. Totalmengden som føres inn bestemmes av leveringsrytmen og av antall anvendte systemer. The filling quantity is determined by the dosing section. The total quantity brought in is determined by the delivery rhythm and by the number of systems used.
Claims (5)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3326505A DE3326505C2 (en) | 1983-07-21 | 1983-07-21 | Loading device for metallurgical furnaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO842671L true NO842671L (en) | 1985-01-22 |
Family
ID=6204689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO84842671A NO842671L (en) | 1983-07-21 | 1984-07-02 | DISPOSAL DEVICE FOR METALLURGICAL Ovens |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS6038583A (en) |
| DE (1) | DE3326505C2 (en) |
| NO (1) | NO842671L (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5218617A (en) * | 1990-06-01 | 1993-06-08 | Hylsa S.A. De C.V. | Apparatus for feeding iron-bearing materials to metallurgical furnaces |
| DE4406898A1 (en) * | 1994-03-03 | 1995-09-07 | Rwe Energie Ag | Process for the simultaneous melting of melted-down material and lumpy rust slag from waste incineration plants |
| DE19744151C5 (en) * | 1997-10-07 | 2004-08-26 | Outokumpu Oyj | Process for melting fine-grained, directly reduced iron in an electric arc furnace |
| AT407752B (en) | 1999-04-22 | 2001-06-25 | Voest Alpine Ind Anlagen | METHOD AND DEVICE FOR MELTING METAL MATERIAL |
| FI118438B (en) * | 2004-09-09 | 2007-11-15 | Outotec Oyj | Hot feed distributor |
| AT502904B1 (en) | 2005-12-07 | 2008-02-15 | Voest Alpine Ind Anlagen | CONVEYOR SYSTEM, PLANT ASSEMBLY AND METHOD OF COUPLING METALLURGICAL PROCESSES |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4113060Y1 (en) * | 1964-07-02 | 1966-06-21 | ||
| NO147532C (en) * | 1981-04-27 | 1983-04-27 | Elkem As | PROCEDURE AND DEVICE FOR CHARGING A MELTING OR REDUCING OVEN. |
-
1983
- 1983-07-21 DE DE3326505A patent/DE3326505C2/en not_active Expired
-
1984
- 1984-07-02 NO NO84842671A patent/NO842671L/en unknown
- 1984-07-04 JP JP59138852A patent/JPS6038583A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE3326505C2 (en) | 1986-06-19 |
| JPS6038583A (en) | 1985-02-28 |
| DE3326505A1 (en) | 1985-02-07 |
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