EP1013778A1 - Procédé et installation pour la production de métal à partir de minerais métalliques - Google Patents

Procédé et installation pour la production de métal à partir de minerais métalliques Download PDF

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Publication number
EP1013778A1
EP1013778A1 EP99102445A EP99102445A EP1013778A1 EP 1013778 A1 EP1013778 A1 EP 1013778A1 EP 99102445 A EP99102445 A EP 99102445A EP 99102445 A EP99102445 A EP 99102445A EP 1013778 A1 EP1013778 A1 EP 1013778A1
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EP
European Patent Office
Prior art keywords
plastic
shut
transport line
lance
transport
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99102445A
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German (de)
English (en)
Other versions
EP1013778B1 (fr
Inventor
Joachim Dr. Janz
Manfred Dipl.-Ing. Voss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Der Gruene Punkt Duales System Deutschland AG
Original Assignee
Der Gruene Punkt Duales System Deutschland AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Der Gruene Punkt Duales System Deutschland AG filed Critical Der Gruene Punkt Duales System Deutschland AG
Priority to SI9930005T priority Critical patent/SI1013778T1/xx
Publication of EP1013778A1 publication Critical patent/EP1013778A1/fr
Application granted granted Critical
Publication of EP1013778B1 publication Critical patent/EP1013778B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
    • C21B5/023—Injection of the additives into the melting part

Definitions

  • the invention relates to a method and an apparatus for producing metal from metal ores, in particular pig iron from iron ore, in which the metal oxides containing ore with a carbon and / or hydrogen (and possibly their compounds) containing reducing gas brought into reaction contact is, which previously from solid carbon and / or hydrocarbonaceous Substances was obtained.
  • the reduced metal ore then enters a smelting process. That for the reduction required gas is in the area of the reduction and melting process obtained by using carbonaceous substances (e.g. coke, coal, oil, natural gas) are added to the zone of the already reduced and heated metal, whereby with the addition of (air) oxygen a decomposition or conversion into carbon-containing gas takes place, which is fed to the previous reduction becomes.
  • carbonaceous substances e.g. coke, coal, oil, natural gas
  • the conventional blast furnace process in which in the blast furnace of Continuous from top to bottom - both the reduction of the metal ore and the formation of the reducing gas and the subsequent melt liquefaction of the metal takes place.
  • iron ore is aggregated Coke added as a carbon carrier.
  • Blown material oil or coal dust
  • plastic waste also in organically and / or inorganically contaminated Form, usable as a supplier for the components of the reducing gas do.
  • Plastic waste is constantly accumulating in large quantities and is serious Disposal problem. It is mostly, if not exclusively, in solid form, be it as - often heavily contaminated - packaging waste as a waste or similar in the course of the production of plastic objects.
  • the invention provides that those referred to in the method of the beginning Genus for the extraction of the reducing gas supplied carbon and / or hydrocarbonaceous substances, at least partially of plastic in crushed, fluidized form as an agglomerate in the wind power in the rack of the metallurgical shaft furnace, in particular a blast furnace become. This happens via lances, which protrude into the shaft furnace and which are connected to a transport line. Via this transport line the plastic to be blown is led to the lances.
  • shut-off devices proposed in the transport line so that it is not only protected is, but an immediate resumption of the overall operation of the plant and blowing in the plastics.
  • a first and a third shut-off device are in the transport line provided to prevent the return transport of plastic or one Setback of the hot gas masses from the blast furnace into the transport line a second shut-off device is formed.
  • Their functionality is described in the Claims, but in particular also explained in more detail in the figure description.
  • the invention makes use of the fact to solve blockages in the transport line take advantage that there is a pressure in the transport line which is 4 to Is 6 times the atmospheric pressure. So becomes the inside of the transport line relaxed to the outside atmosphere (approx. 1 bar) via a ventilation opening, there is a very large pressure and suction effect on the blockages that come loose and are transported out of the system from the transport line become.
  • FIG. 1 shows a blast furnace 1 constructed in a conventional manner, which has a plurality of nozzles or wind molds 20 distributed uniformly around the circumference in the lower frame region (see FIG. 3), which are connected via a line 5 and a ring line 2 in a wind heater 4 heated wind 3 is supplied.
  • the wind 3 can also be enriched with oxygen 3a (O 2 ).
  • O 2 oxygen
  • Some or all of the nozzles 20 have one or more lances 18 over which Additional fuel can be blown in.
  • the usual number of nozzles 20 of the windform arrangement is e.g. 32, and each nozzle has one Diameter of e.g. 140 mm.
  • two lances are provided, which typically have a diameter of 12 or Have 8 mm.
  • only one lance 18 is to be supplied in each nozzle 20 of fluidized plastic and has e.g. a diameter of 28 mm.
  • either all of the lances 18 can be fluidized Plastic are loaded, or the nozzles 20 are mixed, i.e. some nozzles e.g. two oil lances on, while other nozzles 20 turn are equipped with a plastic lance 18.
  • a plastics processing plant 6 becomes a silo 7 shredded plastic in the form of an agglomerate with a high specific surface area and a grain size of 1 to 10 mm, preferably 5 mm. It has proven itself Use of plastic that forms an agglomerate with a bulk density of leads greater than 0.35. Plastic packaging cups or the like are used for these purposes. suitable, e.g. Plastic films when shredding to a lower bulk density lead so that special precautions are taken before or during blowing to be able to blow in a sufficient amount.
  • FIG. 1 shows an injection vessel 8 into which the plastic agglomerate is introduced via a coarse-grain sieve 14 and fluidized by blowing in a fluidizing gas by means of a blower 11 via lines 12 and 13.
  • a fluidizing gas by means of a blower 11 via lines 12 and 13.
  • the fluidized plastic is then metered in a separate metering device 9, for example a mechanical screw metering device or a cellular wheel metering device, and is fed uniformly to the corresponding lances 18 of the windform arrangement via a line 10.
  • the plastic particles are conveyed here by entrained-current flow, ie with a high gas content, for example at a ratio of 5 to 30 kg of plastic per 1 kg of fluidizing gas.
  • Compressed air is used as the fluidizing gas in the present example, since there is no risk of explosion due to the size of the plastic particles of 1 to 10 mm.
  • the injection quantity of the plastic can be varied over a wide range (e.g. 30-150 kg plastic / t RE). It was also found that with the same good gasification, a 1.5 times higher amount of plastic compared to oil can be blown in. If the amount of plastic injected is more than 70 kg / t RE, O 2 is expediently added to the wind stream for good gasification, as already mentioned above. The wind should then be enriched with 0.05 to 0.1% O 2 , preferably 0.08% O 2, for each kg plastic / t RE above the value of 70 kg / t RE. For good gasification, the mixed wind temperature from the blast heater 4 is above 1100 ° C. The blowing pressure at the lances 18 is expediently 0.5 ⁇ 10 5 to 1.5 ⁇ 10 5 Pa above the pressure in the blast furnace 1.
  • the flow velocity of the gas with the floating Plastic particles are sufficient in comparison to the tube cross section of the lance 18 be high in order to melt or melt and thus bake the plastic to avoid in the lance 18 by heat reflection.
  • a suitable relationship the flow velocity to the lance cross section is in the range of 20,000 up to 40,000 1 / sec x m, preferably at 25,000 1 / sec x m. Is this value too low, if there is a risk of caking, if the value is too high, this occurs excessive wear in the lances 18.
  • discontinuities and constrictions in the flow and radii of less than 1 m in the event of curvatures are especially in the connection area 18a of the lances.
  • FIG. 2 Another solution is shown in FIG. 2 and can consist in perform fluidization and dosing in one go. This is in the bottom In the area of the injection vessel, a ball valve 19 is provided as a metering device. The Fine adjustment is made via the pressure setting and the amount of fluidizing gas.
  • this solution requires precise and rapid control of the compressed air supply on the upper line 13 of the injection vessel 8 depending on the fluctuating Internal pressure of the blast furnace 1. For this purpose it is in a suitable place In the blast furnace 1, a pressure sensor is provided, which is connected via a control loop 17 Valve in line 13 quickly readjusted to an exact dosage come.
  • the fluidization and metering of the plastic particles can also be done by means of a pressure-tight rotary valve. In this case, the injection vessel 8 omitted.
  • Figure 4 shows an enlarged view of the as l. designated section in figure 1 and 2 of line 10, via which the plastics to be blown into blast furnace 1, in particular plastic waste in agglomerated form, transported to the lance 18 become.
  • This transport line 10 is connected to the fittings in Injection tower (these include, for example, the metering device 9, but also e.g. the connection for the compressed air or the supply for purge air / nitrogen) formed by a piece of hose 21.
  • This is followed by a shut-off block 22 of the transport line 10 and to the shut-off block in the direction of the blowing lance 18 in turn connects to an essential lance fitting part 23 including the blowing lance 18.
  • the shut-off block 22 comprises a shut-off valve as the first shut-off device 24, which is closed to remove blockages (will be executed later). About that In addition, a vent line goes from the transport line 10 in the shut-off block (opening) 25, which has a shut-off valve 26.
  • a piece of hose 27 which is the transport line 10 of the shut-off block with a heat shut-off valve 28 as a second shut-off device connects.
  • This second shut-off device is followed by a third shut-off device 29 for shutting off the lance 18.
  • Behind the third Shut-off device (seen from the shut-off block) is a mouthpiece 30, via which by means of a connecting piece 31 compressed air in the lance 18 and so that it can be blown into the blast furnace 1.
  • the operation of the above arrangement is as follows: if from any For this reason, no plastic or other reducing agent in the blast furnace is blown in, the shut-off device (29) is closed and the connection 31 opened and then compressed air is in the standstill of the blowing system in the Blown lance. This compressed air is blown in either manually or also automatically whenever the plastic transport to the lance is interrupted is. The introduction of this compressed air prevents the Blow-in lance heats up undesirably and thus prevents heat damage.
  • the connection 31 for entering compressed air into the lance is always opened when the plastic supply to the lance is closed by the third shut-off device is.
  • the connector 31 itself consists essentially of a valve, which is connected to a compressed air reservoir.
  • the plastic agglomerates to be blown into the blast furnace 1 tend to be dependent on their grain shape and size, but also on their specific composition to block the line 10, which - as described above - prevents should be. If such a blockage occurs, one must rapid blockage can be provided.
  • This is the shut-off block trained, in which in the case of a tamper after closing the shut-off valves (first and / or third shut-off device) a vent valve or the vent valve 26 is opened.
  • This ventilation takes place above the outside atmosphere, which has the consequence that between the transport line 10 in the affected part
  • a pressure drop of almost 4 to 6 bar can be recorded via the ventilation line 25 is, while the total pressure drop across the line from the blow fittings to the blowing lance is only about 0.5 to 0.8 bar.
  • Through the blatant Air pressure drop will put considerable pressure on the clogging plastic mass exercised, resulting in the sudden emptying of blockages in the transport line leads, so that this in turn after blocking the valve 26 for the Blowing the

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Iron (AREA)
  • Furnace Charging Or Discharging (AREA)
EP99102445A 1998-12-22 1999-02-09 Procédé et installation pour la production de métal à partir de minerais métalliques Expired - Lifetime EP1013778B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9930005T SI1013778T1 (fr) 1998-12-22 1999-02-09

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19859354 1998-12-22
DE19859354A DE19859354A1 (de) 1998-12-22 1998-12-22 Verfahren und Vorrichtung zur Erzeugung von Metall aus Metallerzen

Publications (2)

Publication Number Publication Date
EP1013778A1 true EP1013778A1 (fr) 2000-06-28
EP1013778B1 EP1013778B1 (fr) 2001-05-09

Family

ID=7892182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99102445A Expired - Lifetime EP1013778B1 (fr) 1998-12-22 1999-02-09 Procédé et installation pour la production de métal à partir de minerais métalliques

Country Status (17)

Country Link
US (1) US6231638B1 (fr)
EP (1) EP1013778B1 (fr)
JP (1) JP3281614B2 (fr)
KR (1) KR100318121B1 (fr)
CN (1) CN1139663C (fr)
AT (1) ATE201050T1 (fr)
BR (1) BR9901289A (fr)
CA (1) CA2261501C (fr)
DE (2) DE19859354A1 (fr)
DK (1) DK1013778T3 (fr)
ES (1) ES2157674T3 (fr)
GR (1) GR3036284T3 (fr)
PL (1) PL337312A1 (fr)
PT (1) PT1013778E (fr)
SI (1) SI1013778T1 (fr)
TW (1) TW523549B (fr)
ZA (1) ZA991337B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT409635B (de) * 2001-01-17 2002-09-25 Haemosan Erzeugung Pharmazeuti Entsorgung von mit hitzeresistenten erregern infiziertem material
WO2008014579A1 (fr) * 2006-08-03 2008-02-07 Companhia Siderúrgica De Tubará0 . Procédé d'injection de caoutchouc granulé dans des hauts fourneaux
DE102008026835A1 (de) * 2008-06-05 2009-12-17 Kurt Himmelfreundpointner Verfahren und Vorrichtung zum Zufördern von förderfähigen Materialien zu Reaktionsöfen
AT512017A1 (de) * 2011-09-30 2013-04-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung zur roheisenerzeugung
ITUB20153608A1 (it) * 2015-09-14 2017-03-14 Danieli Off Mecc Impianto e metodo di recupero e trattamento di residui di frantumazione di rottami ferrosi

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100391901B1 (ko) * 1998-12-12 2003-09-19 주식회사 포스코 고로내폐플라스틱취입장치
US6461400B1 (en) * 2000-04-12 2002-10-08 Art J. Parker Process for extracting quantities of precious metals
KR100485522B1 (ko) * 2002-12-04 2005-04-28 주식회사 포스코 입형식 소성로
DE102011013251A1 (de) 2011-03-07 2012-09-13 E.S.C.H. Engineering Service Center Und Handel Gmbh Verfahren zur Herstellung von Roheisen im Hochofen
DE102013006541A1 (de) 2012-10-30 2014-04-30 E.S.C.H. Engineering Service Center Und Handel Gmbh Verfahren zur Herstellung von Roheisen im Hochofen
DE102014216336A1 (de) 2014-08-18 2016-02-18 Küttner Holding GmbH & Co. KG Verfahren zum Einblasen von Ersatzreduktionsmitteln in einen Hochofen
CN113739581B (zh) * 2021-08-12 2022-09-30 昌黎县兴国精密机件有限公司 一种用于高炉或竖炉富氢冶炼的车载供氢方法及设备
AU2023331879A1 (en) * 2022-08-29 2025-02-27 Paul Wurth S.A. Iron ore reducing and melting apparatus and method
DE102023105805A1 (de) 2023-03-09 2024-09-12 Hochschule Hamm-Lippstadt, Körperschaft des öffentlichen Rechts Verfahren zur Herstellung von Stahl mit reduzierter Kohlendioxidfreisetzung

Citations (6)

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Publication number Priority date Publication date Assignee Title
FR597770A (fr) * 1924-05-10 1925-11-28 Cie Du Carbone Pulverise Pour Procédé et dispositif pour l'injection de combustible pulvérisé par les tuyères d'insufflation des hauts-fournaux et autres appareils métallurgiques
DE2714355A1 (de) * 1977-03-31 1978-10-12 Klein Alb Kg Verfahren und vorrichtung zum einschleusen von rieselfaehigem beschickungsgut
EP0059904A1 (fr) * 1981-03-11 1982-09-15 Fried. Krupp Gesellschaft mit beschränkter Haftung Installation pour alimenter un récipient métallurgique ayant des points d'insufflation multiples en charbon et procédé pour faire fonctionner l'installation
JPS61153218A (ja) * 1984-12-26 1986-07-11 Kawasaki Steel Corp 高炉内粉体吹込み用ランスの冷却方法
EP0622465A1 (fr) * 1993-04-26 1994-11-02 Stahlwerke Bremen GmbH Procédé pour la production de métal à partir de minerais métalliques
JPH06335628A (ja) * 1993-05-31 1994-12-06 Mitsubishi Heavy Ind Ltd 粉体供給装置

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DE2935544A1 (de) * 1979-09-03 1981-03-19 Fritz Dr.Rer.Nat. 7889 Grenzach Mindermann Herstellung von eisen aus eisenoxyd mit belebtschlamm (klaerschlamm) und bzw. o.a. kohlenstoffhaltigen abfallstoffen
DE4104252C2 (de) * 1991-02-13 1998-07-02 Schingnitz Manfred Entsorgungsverfahren für schadstoffbelastete, kohlenstoffhaltige Abfallstoffe
US5244490A (en) * 1992-05-07 1993-09-14 General Motors Corporation Iron making method using waste polymer material
CN1118173A (zh) * 1993-12-21 1996-03-06 不来梅钢铁工厂有限公司 由金属矿冶炼金属的方法
KR100227597B1 (ko) * 1993-12-21 1999-11-01 테오토르 스필퇴버 금속광석으로부터의 금속의 제조방법
US5554207A (en) * 1994-11-25 1996-09-10 Usx Corporation Process of recycling iron oxides and plastics in steelmaking

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Publication number Priority date Publication date Assignee Title
FR597770A (fr) * 1924-05-10 1925-11-28 Cie Du Carbone Pulverise Pour Procédé et dispositif pour l'injection de combustible pulvérisé par les tuyères d'insufflation des hauts-fournaux et autres appareils métallurgiques
DE2714355A1 (de) * 1977-03-31 1978-10-12 Klein Alb Kg Verfahren und vorrichtung zum einschleusen von rieselfaehigem beschickungsgut
EP0059904A1 (fr) * 1981-03-11 1982-09-15 Fried. Krupp Gesellschaft mit beschränkter Haftung Installation pour alimenter un récipient métallurgique ayant des points d'insufflation multiples en charbon et procédé pour faire fonctionner l'installation
JPS61153218A (ja) * 1984-12-26 1986-07-11 Kawasaki Steel Corp 高炉内粉体吹込み用ランスの冷却方法
EP0622465A1 (fr) * 1993-04-26 1994-11-02 Stahlwerke Bremen GmbH Procédé pour la production de métal à partir de minerais métalliques
JPH06335628A (ja) * 1993-05-31 1994-12-06 Mitsubishi Heavy Ind Ltd 粉体供給装置

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* Cited by examiner, † Cited by third party
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PATENT ABSTRACTS OF JAPAN vol. 010, no. 355 (C - 388) 29 November 1986 (1986-11-29) *
PATENT ABSTRACTS OF JAPAN vol. 095, no. 003 28 April 1995 (1995-04-28) *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT409635B (de) * 2001-01-17 2002-09-25 Haemosan Erzeugung Pharmazeuti Entsorgung von mit hitzeresistenten erregern infiziertem material
WO2008014579A1 (fr) * 2006-08-03 2008-02-07 Companhia Siderúrgica De Tubará0 . Procédé d'injection de caoutchouc granulé dans des hauts fourneaux
DE102008026835A1 (de) * 2008-06-05 2009-12-17 Kurt Himmelfreundpointner Verfahren und Vorrichtung zum Zufördern von förderfähigen Materialien zu Reaktionsöfen
AT512017A1 (de) * 2011-09-30 2013-04-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung zur roheisenerzeugung
AT512017B1 (de) * 2011-09-30 2014-02-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung zur roheisenerzeugung
US9428818B2 (en) 2011-09-30 2016-08-30 Primetals Technologies Austria GmbH Method and device for producing pig iron
ITUB20153608A1 (it) * 2015-09-14 2017-03-14 Danieli Off Mecc Impianto e metodo di recupero e trattamento di residui di frantumazione di rottami ferrosi
WO2017046708A1 (fr) * 2015-09-14 2017-03-23 Danieli & C. Officine Meccaniche S.P.A. Installation et procédé pour la récupération et le traitement de résidus provenant du concassage de déchets ferreux
US11213830B2 (en) 2015-09-14 2022-01-04 Danieli & C. Officine Meccaniche S.P.A. Plant and method for recovering and treating residues from crushing ferrous scrap

Also Published As

Publication number Publication date
CA2261501C (fr) 2003-11-18
US6231638B1 (en) 2001-05-15
JP2000192157A (ja) 2000-07-11
JP3281614B2 (ja) 2002-05-13
BR9901289A (pt) 2000-09-05
KR20000047372A (ko) 2000-07-25
PT1013778E (pt) 2001-08-30
ATE201050T1 (de) 2001-05-15
KR100318121B1 (ko) 2001-12-22
SI1013778T1 (fr) 2001-08-31
CN1261106A (zh) 2000-07-26
EP1013778B1 (fr) 2001-05-09
GR3036284T3 (en) 2001-10-31
CN1139663C (zh) 2004-02-25
DE19859354A1 (de) 2000-07-06
ZA991337B (en) 2000-12-19
CA2261501A1 (fr) 2000-06-22
DK1013778T3 (da) 2001-08-13
HK1030796A1 (en) 2001-05-18
ES2157674T3 (es) 2001-08-16
TW523549B (en) 2003-03-11
DE59900087D1 (de) 2001-06-13
PL337312A1 (en) 2000-07-03

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