EP2653568A1 - Vorrichtung und Verfahren zur Flächenbegasung in einem Reduktionsreaktorschacht - Google Patents

Vorrichtung und Verfahren zur Flächenbegasung in einem Reduktionsreaktorschacht Download PDF

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Publication number
EP2653568A1
EP2653568A1 EP20120164635 EP12164635A EP2653568A1 EP 2653568 A1 EP2653568 A1 EP 2653568A1 EP 20120164635 EP20120164635 EP 20120164635 EP 12164635 A EP12164635 A EP 12164635A EP 2653568 A1 EP2653568 A1 EP 2653568A1
Authority
EP
European Patent Office
Prior art keywords
reducing gas
reduction reactor
reactor shaft
reduction
bustle
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.)
Withdrawn
Application number
EP20120164635
Other languages
German (de)
English (en)
French (fr)
Inventor
Georg Aichinger
Karl-Heinz Beham
Reinhard Pum
Wolfgang Sterrer
Kurt Wieder
Johann Wurm
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.)
Primetals Technologies Austria GmbH
Original Assignee
Siemens VAI Metals Technologies GmbH Austria
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.)
Filing date
Publication date
Application filed by Siemens VAI Metals Technologies GmbH Austria filed Critical Siemens VAI Metals Technologies GmbH Austria
Priority to EP20120164635 priority Critical patent/EP2653568A1/de
Priority to US14/390,813 priority patent/US20150114180A1/en
Priority to RU2014145209A priority patent/RU2618037C2/ru
Priority to IN7623DEN2014 priority patent/IN2014DN07623A/en
Priority to UAA201411313A priority patent/UA113428C2/uk
Priority to EP13719051.8A priority patent/EP2839042B1/de
Priority to CN201380020715.7A priority patent/CN104245964A/zh
Priority to AU2013251098A priority patent/AU2013251098A1/en
Priority to KR20147032326A priority patent/KR20150004860A/ko
Priority to PCT/EP2013/058048 priority patent/WO2013156548A1/de
Priority to CA2870594A priority patent/CA2870594A1/en
Publication of EP2653568A1 publication Critical patent/EP2653568A1/de
Priority to ZA2014/06290A priority patent/ZA201406290B/en
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft 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
    • F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
    • F27B15/006—Equipment for treating dispersed material falling under gravity with ascending gases
    • 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
    • F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
    • F27B15/02—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B15/10—Arrangements of air or gas supply devices

Definitions

  • the present invention relates to an apparatus for producing metal sponge or pig iron from metal oxide-containing particulate material using a reducing gas comprising a reduction reactor shaft and a plurality of reducing gas inlet conduits ending in the interior of the reduction reactor shaft for introducing reducing gas into the interior of the reduction reactor shaft.
  • the introduction of the reducing gas into the reduction shaft usually takes place essentially via a so-called Bustle channel which extends around the circumference of the reduction shaft for the most part - also Bustle for short called - which communicates via so-called Bustle slots with the iron oxide-containing material filled interior of the reduction shaft in conjunction.
  • the bustle may be located within the refractory lining of the reduction well - a so-called internal bustle - or outside the reduction well - a so-called external bustle.
  • Reduction gas from the Bustle is distributed into the reduction shaft via the openings in the refractory lining of the reduction shaft - the bustle slots - which originate from the internal bustle or are connected to the external bustle.
  • the bustle usually runs the entire circumference of the reduction well, and then bustles are also essentially around the entire circumference arranged - because the reducing gas must be introduced evenly distributed to achieve a uniform reduction.
  • the distribution and introduction of the reducing gas is generally carried out so that the Bustle slots open into a not filled in the operation of the reduction shaft area of the interior space.
  • the reduction shaft is often made with a vertical increase seen from above along the axis of the reduction shaft diameter of its interior - the inner diameter is determined by the Feuerfestausmautation so that such an extension can be realized, for example, by changing the thickness of the refractory lining. Due to the angle of repose of the iron oxide-containing material is formed at the extension - also called return - around the entire circumference of a not filled by the bed of annulus. The Bustle slots then open into this annulus.
  • the reducing gas entrains dust which, after being introduced into the reduction shaft, is deposited in the annulus and in the bed of the iron oxide-containing material. Therefore, it forms from the circumference of the reduction shaft, where ?? Reduction gas is introduced, towards the center of the bed towards a dust-free gas increased pressure drop from - the deposited dust clogs flow paths of the reducing gas through the bed. Among other things, this leads to an uneven gasification of the bed and thus to an uneven reduction result.
  • the disadvantage here is that the channels after EP0904415B1 must be supported in the center of the reduction well, reducing gas for the channels due to the removal of Bustle and channels can not be routed from the bustle in the channels, and it is at a plurality of channels due to the occupied by them cross-sectional area to congestion in the down moving beds can come.
  • WO2009000409 Proposes to introduce the entire reducing gas via channels, without Bustle, into the reduction shaft. Since, accordingly, the channels must introduce more reducing gas and be dimensioned correspondingly larger than in EP0904415B1 , the congestion problems are exacerbated. Furthermore, the gas supply to the cross-sectional area of the shaft is less uniform than using a bustle.
  • a blast furnace process for the production of pig iron is known from the prior art, which is supplied in the standard version from above with lumpy iron carriers and coke and is injected at the bottom of hot blast.
  • recent developments lead to the blast furnace being operated with technically pure oxygen, and a portion of the blast furnace gas is fed to the blast furnace in the lower region of the shaft as additional reducing gas after treatment.
  • a supply of reducing gas only over a bustle on the circumference also leads to uneven gas distribution in the blast furnace shaft.
  • the object of the present invention is to provide a device and a method for producing metal sponge or pig iron from metal oxide-containing particulate material using a reducing gas in a reduction reactor shaft, in which the problems of the prior art are avoided as completely as possible.
  • the metal sponge is preferably sponge iron.
  • the metal oxide-containing particulate material is preferably chunky iron-containing material.
  • lumpy material is meant material with a grain size of, for example, about 5 mm, up to 50 mm in the case of sintering, up to 100 mm after agglomeration processes such as compaction; for example, lump, pellets or sinter.
  • Under reduction reactor shaft is to be understood, for example, a shaft reactor as used for example in a COREX® process, or the upper part of a blast furnace - ie the part of a blast furnace, in which the indirect gas reduction takes place, above the cohesive zone.
  • a shaft reactor for example, solid sponge iron is produced, while in a blast furnace, liquid pig iron is produced.
  • a plurality of reducing gas inlet lines ending in the interior of the reduction reactor shaft are present.
  • the expression in the interior is to be understood as meaning that a reducing gas inlet line can protrude into the interior, but also that the end of a reducing gas inlet line can lie in the interior wall delimiting the interior space - for example the opening of a bustle slot in the refractory lining.
  • the reducing gas exits the reducing gas inlet lines through reduction gas outlets of these reducing gas inlet lines and then flows through the bed of metal-oxide-containing particulate material.
  • a reducing gas channel body crossing the interior of the reduction reactor shaft for introducing reducing gas into the interior of the reduction reactor shaft is present. He can traverse the interior as a secant or as a diameter, with a diameter is preferred as a diameter, because reducing gas can then be introduced more symmetrically, more uniformly in the bed.
  • the reduction gas channel body can, for example, run horizontally, so that reducing gas can be introduced into the bed at a vertical level.
  • the reduction gas channel body can also be a lowest point or a have the highest point with respect to the vertical, so that it has two from the wall of the reduction reactor shaft to the center of the reduction reactor shaft downwardly or upwardly inclined sections. Reduction gas is then introduced into the bed at various vertical levels during operation.
  • the reducing gas outlets of the reducing gas inlet lines located in the interior of the reduction reactor shaft are all located within a section of the vertical longitudinal extent of the reduction reactor shaft which has a vertical thickness of up to 100% of the diameter of the reduction reactor shaft.
  • the thickness of the section is up to 40% of the diameter of the reduction reactor shaft, more preferably up to 30% of the diameter of the reduction reactor shaft, most preferably up to 20% of the diameter of the reduction reactor shaft. The smaller the thickness of the section, the easier it is to supply all of the reducing gas inlet lines from a source with reducing gas.
  • reducing gas inlet conduits are designed as bustle slots.
  • reducing gas inlet lines are designed as half-shells open at the bottom with walls extended downwards, preferably substantially parallel, which half-pipe shells rest on support tubes.
  • the support tubes preferably have coolant channels inside.
  • In the half-pipe shells lying in the interior of the reduction reactor shaft end of the half-pipe shell is provided with a connecting the downwardly extending walls transverse wall.
  • the support tubes protrude from the edge of the reduction reactor shaft into the interior of the reduction reactor shaft, preferably radially. They are not supported on their lying in the interior of the reduction reactor shaft end, so designed as so-called flying pipes.
  • the reduction gas channel body can be designed as a downwardly open half-pipe shell with downwardly extended, preferably substantially parallel, walls, which half-pipe shell rests on a support tube.
  • the support tube preferably has coolant channels inside. The support tube is supported on both sides of the jacket of the reduction reactor shaft.
  • two web plates could be attached to both sides of a support tube - for example, welded - to ensure analogous in the bed a space below the support tube.
  • the reducing gas channel body lies at least partially within that section of the vertical longitudinal extent of the reduction reactor shaft which, seen vertically, has a thickness of up to 100%, preferably up to 40%, more preferably up to 30%, most preferably up to 20%, of the diameter of the reduction reactor shaft in which the reducing gas outlets of the reducing gas inlet conduits are located.
  • reducing gas from the reducing gas outlets can be easily guided to the reducing gas channel body, or it can be easily guided from the source of reducing gas supplying the reducing gas inlet lines to the reducing gas channel body.
  • the reduction gas channel body rests on the outer wall of the reduction reactor shaft.
  • At least a plurality of the reducing gas inlet lines start from an internal bustle, ie are bustle slots of an internal bustle.
  • All reduction gas inlet lines may also be bustle slots of an internal bustle.
  • the number A of reducing gas inlet lines, which are bustle slots of an internal bustle is less than or equal to X, that is, A ⁇ X.
  • an internal bustle requires a less elaborate design of the pressure vessel of the reduction reactor shaft and allows a less expensive supply of reducing gas.
  • a higher number of bustle slots can be realized compared to an external bustle.
  • At least several of the reducing gas inlet lines start from an external bustle, ie are bustle slots of an external bustle.
  • All reduction gas inlet lines may also be bustle slots of an external bustle.
  • the number B of reducing gas inlet lines which are bustle slots of an external bustle is less than or equal to X, that is, B ⁇ X.
  • an external bustle Compared to an internal bustle, an external bustle has the advantage that the bustle slots can be easily cleaned from the outside, and that the refractory lining inside the reduction reactor shaft can be made more uncomplicated.
  • the Bustle slots open as described in the introduction into a not filled in the operation of the reduction shaft area of the Interior. This is achieved, for example, by producing the reduction shaft with a sudden enlargement of the diameter of its interior, seen vertically from above along the longitudinal axis of the reduction shaft.
  • a plurality of the reducing gas inlet conduits are flying tubes. This means that not all reduction gas inlet lines are flying tubes.
  • the number C of reducing gas inlet pipes, which are flying pipes is smaller than X, that is, C ⁇ X.
  • reducing gas can be introduced at different distances from the inner wall of the reduction reactor shaft, which leads to a homogenization of the introduction and thus to a better reduction result.
  • flying tubes As compared to a continuous reduction gas duct body, flying tubes provide easier assembly and better substitution capability, while also providing a gain in terms of even distribution of the reducing gas over a reduction reactor shaft only with Bustle.
  • the reduction gas channel body traverses the interior of the reduction reactor shaft, which is bounded by the inner walls of the reduction reactor shaft.
  • the reduction gas channel body thus has two inside wall-side ends.
  • At least one inner side end of the reducing gas channel body is substantially vertically below the reduction gas channel body, a reducing gas supply line for supplying reducing gas into the interior of the reduction reactor shaft.
  • substantially vertically below means that at least part of the mouth of the reducing gas supply line is located vertically below the reduction gas channel body. Then, during operation, the reducing gas emerging from this orifice can enter the bulkhead when ascending into a free space formed below the reducing gas channel body and distribute in this free space, which traverses the interior of the reduction reactor shaft below the reducing gas channel body.
  • the reductant gas supply line is from an internal bustle. It is then, for example, a - specially trained for this task - Bustle slot of the internal bustle, or it is a subsection of this internal Bustle.
  • a reducing gas supply line for supplying reducing gas into the inner space of the reduction reactor shaft is present; then two reduction gas supply lines may be present - for example, two sections of an internal bustle.
  • the reducing gas supply line originates outside the reduction reactor shaft, for example from an external bustle. It is then, for example, a Bustle slot of the external bustle, possibly specially designed for this task.
  • the internal or external bustle is provided with at least one feed for reducing gas through which reducing gas is directed into the internal or external bus.
  • at least one feed with respect to the circumference of the reduction reactor shaft is offset to the position of the reducing gas supply line below an inner-wall-side end of the reducing gas channel body, preferably by 45 ° -90 °, particularly preferably substantially 90 °.
  • the reducing gas flows as long as possible in the internal or external bustle before it enters a cavity formed in the bed below the reducing gas channel body during operation.
  • dust deposits in the internal or external bustle are minimized.
  • the inner diameter of the reduction reactor shaft is widened in the region of its longitudinal extension, in which the reducing gas channel body and possibly flying tubes are present, in relation to other regions of its longitudinal extent.
  • the expansion is intended to substantially compensate for the loss of cross-sectional area available for the downward movement of the bed in the interior, which results from the area requirement of the reduction gas duct body and possibly the flying pipes. For example, if this loss is 10% of the area of the cross-sectional area in the interior, then the inner diameter should be extended to about 2 - 10%. As a result, congestion problems in the downwardly moving bed can be reduced since area which is occupied by the flying tubes or the reduction gas channel body and thus is not available for a downward movement of the bed, is compensated by the extension again.
  • the region in which the inner diameter of the reduction reactor shaft is widened preferably comprises a section of the vertical longitudinal extent of the reduction reactor shaft which, seen vertically, has a thickness of up to 100%, preferably up to 40%, particularly preferably up to 30%, very particularly preferably up to 20%, of the diameter of the reduction reactor shaft.
  • the extension may also be present above the region of the longitudinal extent in which the reduction gas channel body and possibly flying tubes are present.
  • Another object of the present invention is a method for producing metal sponge or pig iron from a bed of metal oxide-containing particulate material in a reduction reactor shaft using a reducing gas, characterized in that a first subset of the reducing gas is introduced into the bed by means of a plurality of reduction gas inlet lines ending in the interior of the reduction reactor shaft, and a second subset of the reducing gas is introduced into the bed by means of a reducing gas channel body traversing the interior of the reduction reactor shaft.
  • a free space forms in the bed below the reduction gas channel body during operation.
  • the reducing gas can distribute and enter from it into the bed.
  • the reducing gas is thus introduced into the bed by means of the reducing gas channel body in the interior of the reduction reactor shaft.
  • reducing gas inlet lines are designed as bustle slots
  • reducing gas is introduced into the bed by means of the bustle slots.
  • reducing gas inlet lines are designed as downwardly open, lying on support tubes half-pipe shells with downwardly extended walls, for example, as a flying tubes, so formed in operation analogous to the ReduktionsgaskanalSystem below a free space in the bed. In this space, the reducing gas can distribute and enter from it into the bed.
  • FIG. 1 According to the prior art shows that in a reduction reactor shaft 1 via a feed device 2 introduced iron oxide-containing particulate material forms a bed 3.
  • Reduction gas 4 - represented by corrugated arrows with a massive tip - flows through the bed and reduces the lump to sponge iron.
  • the illustration of device parts for removing spent reducing gas from the reduction reactor shaft has been omitted for reasons of clarity.
  • the reducing gas 4 is passed into an internal bustle 6 formed in the refractory lining 5 of the reduction reactor shaft 1. From internal Bustle 6 go several reducing gas inlet lines for the introduction of reducing gas into the interior of the reduction reactor shaft - here Bustle slots 7 - from which end in the interior of the reduction reactor shaft 1.
  • FIG. 2 a device according to the invention is based on the repetition of in FIG. 1 used reference numerals for reasons of clarity mostly omitted.
  • the mouths 9a, 9b, 9c, 9d of the bustle slots are the reduction gas outlets of the bustle slots 7. They lie in a horizontal plane 10th
  • a reduction gas channel body 11 passes through the interior of the reduction reactor shaft 1.
  • the reduction gas channel body is designed as a downwardly open, resting on a support tube 12 half-pipe shell 13 with downwardly extended walls.
  • the support tube 12 is supported on both sides of the jacket 14 of the reduction reactor shaft, which is not shown.
  • the reduction gas channel body 11 runs horizontally and traverses the interior as a diameter. It lies within that section of the vertical longitudinal extent of the reduction reactor shaft which, viewed vertically, has a thickness of up to 100% of the diameter of the reduction reactor shaft, in the illustrated case below 30%, in which the orifices of the Bustle slots are located.
  • FIG. 3 shows a view of in FIG. 2 shown device from above vertically downwards.
  • the two feeds 16a and 16b of the bustle 5 are with respect to the circumference of the reduction reactor shaft 1 by substantially 90 ° to the position of the - in FIG. 3 not visible - reducing gas supply lines below the inner wall-side ends 17a, 17b of the reduction gas channel body 1 offset.
  • FIG. 4 schematically shows how the reducing gas channel body 11 below in the bed a space 18 is formed.
  • the support tube 12 carries the half-pipe shell 13 with extended substantially parallel walls. It is also shown that the extended side walls are supported on the support tube by means of struts to prevent bending under the pressure of the bed 3.
  • a corresponding free space is formed with analogous construction of the flying tubes described above.
  • FIG. 5 schematically shows one to FIG. 3 analogous view of another embodiment of the device according to the invention.
  • an external Bustle exists, which consists of the two parts 19a and 19b. It is supplied by the feeds 22 and 23 with reducing gas.
  • the external bustle could also be designed as a continuous ring, which is not shown in an extra figure.
  • the reducing gas channel body 11 connects the two parts 19a and 19b. From the external Bustle go Bustle slots 20, which in a dashed line indicated annulus, which in the bed due to a sudden expansion of the interior is formed, open within the jacket 14 of the reduction reactor shaft. Also, for the purpose of introducing reducing gas, flying tubes 21, which are supported on the jacket 14 as well as the reducing gas channel body, exit. They end in the interior of the reduction reactor shaft.
  • a first subset of the reducing gas is introduced into the bed by means of a plurality of reducing gas inlet lines ending in the interior of the reduction reactor shaft - external or internal Bustle bustle slots, or flying tubes from an external Bustle.
  • a second subset of the reducing gas is introduced into the bed by means of a reducing gas channel body traversing the interior of the reduction reactor shaft.
  • FIGS. 6 and 7 show schematically how in FIG. 3 and FIG. 4 the partial section of the internal bustle 6, which acts as a reduction gas supply line for supplying reducing gas into the interior of the reduction reactor shaft, is designed vertically below the reduction gas channel body 11.
  • the internal bustle 6 has an extension downwards; the reduction gas channel body 11 is located such that the free space 18 below the reduction gas channel body 11 lies approximately in a plane with the annular space into which the bustle slots 7 open with their mouths 9e.
  • FIG. 6 shows a section of a device according to the invention.
  • An internal bustle 6 is present in the refractory lining 5 in the shell 14 of the reduction reactor shaft.
  • a section of the internal bustle 6 is extended downwards.
  • the internal Bustle 6 bounding the interior wall is shown hatched.
  • some openings of bustle slots 7 are shown in the area of the bottom of the internal bustle 6; Limits of the floor are shown with dashed lines.
  • a bustle slot 7 with mouth 9e is shown in section.
  • a reducing gas channel body 11 At the portion of the internal bustle 6, which is extended downward, enters a reducing gas channel body 11 through the hatched wall into the interior. It is shown for clarity only a portion of the reduction channel body 11 with support tube 12 and half pipe shell 13. Perpendicular below the reduction gas channel body 11, the hatched shown wall has an opening 15, is introduced through the reducing gas into the interior. This opening 15 is a reducing gas supply line from the internal Bustle 6.
  • the reducing gas channel body 11 is such that the space 18 below the reducing gas channel body 11 is approximately in a plane with the mouths of the Bustle slots, of which for clarity, only one, namely Mouth 9e, is shown.
  • FIG. 7 is a section along the broken line AA 'from FIG. 7 shown.
  • the flow path of reducing gas 4 - represented by corrugated arrows with solid tip - out of the bustle 6 through opening 15 into a region below the Reduktonsgaskanal organisation 11 is illustrated.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Iron (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP20120164635 2012-04-18 2012-04-18 Vorrichtung und Verfahren zur Flächenbegasung in einem Reduktionsreaktorschacht Withdrawn EP2653568A1 (de)

Priority Applications (12)

Application Number Priority Date Filing Date Title
EP20120164635 EP2653568A1 (de) 2012-04-18 2012-04-18 Vorrichtung und Verfahren zur Flächenbegasung in einem Reduktionsreaktorschacht
EP13719051.8A EP2839042B1 (de) 2012-04-18 2013-04-18 Vorrichtung und verfahren zur flächenbegasung in einem reduktionsreaktorschacht
RU2014145209A RU2618037C2 (ru) 2012-04-18 2013-04-18 Устройство и способ для поверхностной обработки газом в шахте восстановительного реактора
IN7623DEN2014 IN2014DN07623A (enrdf_load_stackoverflow) 2012-04-18 2013-04-18
UAA201411313A UA113428C2 (xx) 2012-04-18 2013-04-18 Пристрій і спосіб для поверхневої обробки газом у шахті відновного реактора
US14/390,813 US20150114180A1 (en) 2012-04-18 2013-04-18 Apparatus and process for surface gasification in a reduction reator shaft
CN201380020715.7A CN104245964A (zh) 2012-04-18 2013-04-18 用于在还原反应器井筒中进行表面吹气的装置和方法
AU2013251098A AU2013251098A1 (en) 2012-04-18 2013-04-18 Apparatus and process for surface gasification in a reduction reactor shaft
KR20147032326A KR20150004860A (ko) 2012-04-18 2013-04-18 환원 반응 노의 표면 가스화 장치 및 방법
PCT/EP2013/058048 WO2013156548A1 (de) 2012-04-18 2013-04-18 Vorrichtung und verfahren zur flächenbegasung in einem reduktionsreaktorschacht
CA2870594A CA2870594A1 (en) 2012-04-18 2013-04-18 Apparatus and process for surface gasification in a reduction reactor shaft
ZA2014/06290A ZA201406290B (en) 2012-04-18 2014-08-26 Apparatus and process for surface gasification in a reduction reactor shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120164635 EP2653568A1 (de) 2012-04-18 2012-04-18 Vorrichtung und Verfahren zur Flächenbegasung in einem Reduktionsreaktorschacht

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EP2653568A1 true EP2653568A1 (de) 2013-10-23

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EP20120164635 Withdrawn EP2653568A1 (de) 2012-04-18 2012-04-18 Vorrichtung und Verfahren zur Flächenbegasung in einem Reduktionsreaktorschacht
EP13719051.8A Not-in-force EP2839042B1 (de) 2012-04-18 2013-04-18 Vorrichtung und verfahren zur flächenbegasung in einem reduktionsreaktorschacht

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EP13719051.8A Not-in-force EP2839042B1 (de) 2012-04-18 2013-04-18 Vorrichtung und verfahren zur flächenbegasung in einem reduktionsreaktorschacht

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US (1) US20150114180A1 (enrdf_load_stackoverflow)
EP (2) EP2653568A1 (enrdf_load_stackoverflow)
KR (1) KR20150004860A (enrdf_load_stackoverflow)
CN (1) CN104245964A (enrdf_load_stackoverflow)
AU (1) AU2013251098A1 (enrdf_load_stackoverflow)
CA (1) CA2870594A1 (enrdf_load_stackoverflow)
IN (1) IN2014DN07623A (enrdf_load_stackoverflow)
RU (1) RU2618037C2 (enrdf_load_stackoverflow)
UA (1) UA113428C2 (enrdf_load_stackoverflow)
WO (1) WO2013156548A1 (enrdf_load_stackoverflow)
ZA (1) ZA201406290B (enrdf_load_stackoverflow)

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
EP3486335A1 (de) 2017-11-15 2019-05-22 Primetals Technologies Austria GmbH Reduktionsgaszufuhr für direktreduktion
SE546071C2 (en) * 2021-11-30 2024-05-07 Hybrit Development Ab A system for direct reduction of iron ore to sponge iron
EP4350010A1 (de) 2022-10-05 2024-04-10 Primetals Technologies Austria GmbH Eisenschmelze aus sinter

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GB2016124A (en) * 1978-03-11 1979-09-19 Hamburger Stahlwerke Gmbh Rocess and apparatus for the direct reduction of iron ores
WO2000036157A1 (en) * 1998-12-11 2000-06-22 Danieli & C. Officine Meccaniche Spa Device and method for the direct reduction of iron oxides
WO2000036159A1 (en) * 1998-12-11 2000-06-22 Danieli & C. Officine Meccaniche S.P.A. Method and apparatus for the direct reduction of mineral iron with optimized injection of reducing gas
EP0904415B1 (de) 1996-06-12 2001-08-08 Deutsche Voest-Alpine Industrieanlagenbau GmbH Vorrichtung zur erzeugung von eisenschwamm
WO2009000409A1 (de) 2007-06-28 2008-12-31 Siemens Vai Metals Technologies Gmbh & Co Verfahren und vorrichtung zur erzeugung von eisenschwamm

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US3799521A (en) * 1973-02-01 1974-03-26 Fierro Esponja Method and apparatus for the gaseous reduction of iron ore to sponge iron
US3853538A (en) * 1973-07-20 1974-12-10 Steel Corp Use of reducing gas by coal gasification for direct iron ore reduction

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EP2839042B1 (de) 2016-05-18
UA113428C2 (xx) 2017-01-25
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WO2013156548A1 (de) 2013-10-24
AU2013251098A1 (en) 2014-10-09
ZA201406290B (en) 2016-09-28
US20150114180A1 (en) 2015-04-30
CA2870594A1 (en) 2013-10-24
CN104245964A (zh) 2014-12-24
RU2618037C2 (ru) 2017-05-02
KR20150004860A (ko) 2015-01-13
EP2839042A1 (de) 2015-02-25

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