EP2586877A1 - Furnace having even distribution of gas - Google Patents
Furnace having even distribution of gas Download PDFInfo
- Publication number
- EP2586877A1 EP2586877A1 EP10853710.1A EP10853710A EP2586877A1 EP 2586877 A1 EP2586877 A1 EP 2586877A1 EP 10853710 A EP10853710 A EP 10853710A EP 2586877 A1 EP2586877 A1 EP 2586877A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reduction furnace
- reducing gas
- charge material
- down pipe
- furnace
- 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
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Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
- C21B13/143—Injection of partially reduced ore into a molten bath
-
- 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
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/005—Shaft or like vertical or substantially vertical furnaces wherein no smelting of the charge occurs, e.g. calcining or sintering furnaces
-
- 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
- F27D3/16—Introducing a fluid jet or current into the charge
-
- 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
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
- C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
- C21B2100/64—Controlling the physical properties of the gas, e.g. pressure or temperature
Definitions
- the present invention relates to a reduction furnace reducing ore containing an iron oxide component and an apparatus for manufacturing molten iron by melting reduced ore.
- FIG. 1 illustrates a typical reduction furnace reducing ore containing an iron oxide component and an apparatus 1 for manufacturing molten iron by melting reduced ore.
- the apparatus 1 includes a reduction furnace 10 for reducing or preheating agglomerated ores, such as pellets or lump ore, by injecting a reducing gas.
- a charge material is introduced into the reduction furnace 10 through a charge feeding port 11.
- the charge material reduced in the reduction furnace 10 is discharged in a fixed amount by a discharge screw 13 and the discharged charge material is supplied to a melting furnace 20 through a vertical down pipe 14 and a tilt down pipe 16.
- a drop box 15 is included in the vertical down pipe 14 and a nitrogen supply pipe (not shown) is connected to the drop box 15 to inject nitrogen for cooling into the vertical down pipe 14.
- the nitrogen for cooling may decrease thermal shock applied to the discharge screw 13 by gas flowing backwards to the reduction furnace 10 from the melting furnace 20.
- reducing gas required for the reduction of the charge material is prepared by the gasification of coal and heat generated at this time is also used to melt the charge material reduced and supplied from the reduction furnace 10.
- the reducing gas generated in the melting furnace 20 is dust collected in a cyclone 22 and is then injected into the reduction furnace 10 through a reducing gas intake port 17.
- the injected reducing gas reduces the charge material while passing through a packed bed 30 of the charge material in an oxide form.
- the injected reducing gas may not be provided to the center of the reduction furnace 10 due to the resistance caused by the packed charge material and may mainly flow along a wall portion thereof.
- the non-uniform distribution of the reducing gas may cause severe unbalance of a reduction rate for each position of the charge material and the unreduced charge material at the center of the reduction furnace 10 may be provided to the melting furnace 20 to break thermal balance of the melting furnace 20, and thus, limitations, such as a decrease in production, an increase in fuel cost, and a decrease in an operating ratio, may occur.
- limitations such as a decrease in production, an increase in fuel cost, and a decrease in an operating ratio, may occur.
- the non-uniform distribution of the reducing gas may be more severe and it may be more difficult for the reducing gas to reach the center thereof when the size of the reduction furnace 10 radial direction is increased in a radial direction.
- An aspect of the present invention provides improvements, such as an increase in production, a decrease in fuel costs, an increase in an operating ratio, and operational stability, by decreasing a thermal load of a melting furnace when a charge material is supplied thereto by removing a non-uniform distribution phenomenon of reducing gas, in which the reducing gas supplied to the inside of a reduction furnace in a reduction process is mainly flowing along a wall portion but not introducing to the center of the reduction furnace thereof, to increase a reduction rate of the charge material and uniformize reduction rates between particles of the charge material.
- Another aspect of the present invention provides an increase in the capacity of a facility, able to be achieved by simply increasing the size of a reduction furnace and a deadman in a radial direction during the increase in the capacity of the reduction furnace by allowing the reducing gas to be uniformly distributed in the radial direction of the reduction furnace.
- a reduction furnace including: a charge feeding port having a charge material introduced therethrough; and a reducing gas intake port having reducing gas injected therethrough, wherein the charge feeding port is formed in an upper portion thereof and the reducing gas intake port is installed in a bottom portion thereof.
- the reducing gas intake port may be installed in a bottom portion of a deadman disposed in a lower portion of the reduction furnace.
- a path connected to the reducing gas intake port may be formed inside the deadman.
- the path may be formed in plural to be symmetrical in a radial direction.
- a vertical down pipe having the charge material reduced by the reducing gas discharged therethrough may be filled with the charge material in normal operating conditions.
- a drop box may be installed in an end portion of the vertical down pipe and a discharge screw discharging a fixed amount of the charge material may be installed in the drop box.
- the vertical down pipe has a predetermined vertical length to generate a reduction in pressure in gas flowing backwards into the reduction furnace through the vertical down pipe.
- reducing gas may be injected through a deadman disposed at the center of a bottom portion of a reduction furnace, a reduction rate of a charge material in the reduction furnace may increase, reduction rates between particles of the charge material may be uniformized, and a thermal load of a melting furnace may be decreased during the charge material is supplied to the melting furnace, and thus, an increase in production, a decrease in fuel costs, an increase in an operating ratio, and operational stability may be achieved.
- the reducing gas may be allowed to be uniformly distributed in a radial direction of the reduction furnace, and thus, an increase in the capacity of a facility may be achieved by simply increasing the size of the reduction furnace and the deadman in the radial direction thereof during the increase in the capacity of the reduction furnace.
- a discharge screw since the position of a discharge screw, a charge material supply device, may be changed from a lower end of the reduction furnace to a portion of a drop box, differential pressure in a vertical down pipe may be generated, and thus, a back flow of high-pressure gas from the melting furnace into the reduction furnace may be prevented.
- FIG. 1 is a longitudinal sectional view illustrating a typical reduction furnace reducing ore containing an iron oxide component and an apparatus for manufacturing molten iron by melting reduced ore;
- FIG. 2 is a longitudinal sectional view illustrating a reduction furnace according to an embodiment of the present invention.
- FIG. 2 is a longitudinal sectional view illustrating a reduction furnace 100 according to an embodiment of the present invention.
- a charge feeding port 110 and a plurality of exhaust gas discharge ports 120 are included in an upper portion of the reduction furnace 110.
- a deadman 180 (or a dead woman, hereinafter, both terms are used interchangeably) is installed in a lower end of the inside of the reduction furnace 100. The deadman 180 is installed to prevent the degradation of the charge material due to the accumulative load of the charge material itself or formation of a stationary bed.
- a reducing gas intake port 170 is installed in a bottom portion of the deadman 180 and a path is formed inside the deadman 180 so as to allow the reducing gas injected through the reducing gas intake port 170 to pass therethrough.
- the reducing gas intake port 170 is formed in the center of the reduction furnace 100 in a radial direction, and the path inside the deadman 180 connected to the reducing gas intake port 170 may be formed in plural to be symmetrical in the radial direction.
- a vertical down pipe 140 connected to the reduction furnace 100 is installed in a lower portion of the reduction furnace 100 and a drop box 150 is installed in an end portion of the vertical down pipe 140.
- a discharge screw 130, an attachable and detachable device for supplying a fixed amount of the charge material, is installed in the drop box 150.
- a tilt down pipe 160 connected to a dome portion of a melting furnace is installed in a lower portion of the drop box 150.
- the charge material is introduced into the reduction furnace 100 through the charge feeding port 110.
- the charge material reduced in the reduction furnace 100 is transferred to the vertical down pipe 140 to be discharged by the discharge screw 130 formed in the end portion of the vertical down pipe 140 in a fixed amount.
- the discharged charge material is supplied to the melting furnace through the tilt down pipe 160. Meanwhile, reducing gas reduces the charge material and is then discharged through the exhaust gas discharge ports 120.
- Inner portions of the reduction furnace 100 and the vertical down pipe 140 are filled with the charge material in normal operating conditions.
- reducing gas from the melting furnace is allowed to be injected thereinto by the installation of the reducing gas intake port 170 having the reducing gas passed therethrough in the bottom portion of the deadman 180 installed at the lower end of the inside of the reduction furnace, instead of a typical reducing gas intake port disposed on an intermediate wall portion of the reduction furnace, and thus, uniform distribution in the radial direction may be induced from a typical non-uniform distribution phenomenon of the reducing gas, a reducing gas utilization ratio and a reduction rate of the charge material may be increased, and the reduction rate thereof may be uniformized.
- an increase in production, a decrease in fuel costs, an increase in an operating ratio, and an increase in operational stability may be achieved by reducing a thermal load of the melting furnace when the charge material is provided to the melting furnace.
- the reducing gas may be uniformly distributed in the radial direction of the reduction furnace, an increase in the capacity of facility may be achieved by simply increasing the reduction furnace 100 and the deadman 180 in the radial direction thereof during the increase in the capacity of the reduction furnace 100.
- the discharge screw 130 a device for supplying a fixed amount of the charge material, is installed in a portion of the drop box 150 instead of the lower end of the reduction furnace, a reduction in pressure in the vertical down pipe 140 is generated, and thus, a back flow of high-pressure reducing gas in the melting furnace into the reduction furnace 100 through the discharge screw 130 may be prevented. That is, the back flow of high-pressure reducing gas in the melting furnace disposed at a lower portion of the tilt down pipe 160 into the reduction furnace 100 due to the generation of differential pressure in the vertical down pipe 140 may be prevented.
- an unreduced height h of the charge material is essential for the purpose of generating a reduction in pressure in the reducing gas in order to prevent the back flow of the reducing gas through the discharge screw 130.
- the height of the reduction furnace 100 may be reduced by as much as the unreduced height h of the charge material illustrated in FIG. 1 .
- nitrogen is typically injected into the vertical down pipe 140 for the purpose of reducing thermal shock applied to the discharge screw 130 by gas flowing backwards from the melting furnace into the reduction furnace 100.
- nitrogen injected into the vertical down pipe 140 may not be required in the reduction furnace 100 according to the present invention, the amount of nitrogen used may be reduced and operational costs may be reduced.
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- 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)
- Manufacture Of Iron (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
Description
- The present invention relates to a reduction furnace reducing ore containing an iron oxide component and an apparatus for manufacturing molten iron by melting reduced ore.
-
FIG. 1 illustrates a typical reduction furnace reducing ore containing an iron oxide component and anapparatus 1 for manufacturing molten iron by melting reduced ore. As illustrated inFIG. 1 , theapparatus 1 includes areduction furnace 10 for reducing or preheating agglomerated ores, such as pellets or lump ore, by injecting a reducing gas. A charge material is introduced into thereduction furnace 10 through acharge feeding port 11. The charge material reduced in thereduction furnace 10 is discharged in a fixed amount by adischarge screw 13 and the discharged charge material is supplied to amelting furnace 20 through a vertical downpipe 14 and a tilt downpipe 16. Adrop box 15 is included in the vertical downpipe 14 and a nitrogen supply pipe (not shown) is connected to thedrop box 15 to inject nitrogen for cooling into the vertical downpipe 14. The nitrogen for cooling may decrease thermal shock applied to thedischarge screw 13 by gas flowing backwards to thereduction furnace 10 from themelting furnace 20. - In the
melting furnace 20, reducing gas required for the reduction of the charge material is prepared by the gasification of coal and heat generated at this time is also used to melt the charge material reduced and supplied from thereduction furnace 10. - The reducing gas generated in the
melting furnace 20 is dust collected in acyclone 22 and is then injected into thereduction furnace 10 through a reducinggas intake port 17. The injected reducing gas reduces the charge material while passing through a packedbed 30 of the charge material in an oxide form. The injected reducing gas may not be provided to the center of thereduction furnace 10 due to the resistance caused by the packed charge material and may mainly flow along a wall portion thereof. The non-uniform distribution of the reducing gas may cause severe unbalance of a reduction rate for each position of the charge material and the unreduced charge material at the center of thereduction furnace 10 may be provided to themelting furnace 20 to break thermal balance of the meltingfurnace 20, and thus, limitations, such as a decrease in production, an increase in fuel cost, and a decrease in an operating ratio, may occur. In particular, in the case that a size of thetypical reduction furnace 10 is increased for the purpose of increasing the capacity thereof, the non-uniform distribution of the reducing gas may be more severe and it may be more difficult for the reducing gas to reach the center thereof when the size of thereduction furnace 10 radial direction is increased in a radial direction. - Also, since pressure drop in the
cyclone 22 may occur in the case that the reducing gas generated in themelting furnace 20 is injected into thereduction furnace 10 through thecyclone 22, the reducing gas may flow backwards into thereduction furnace 10 through the vertical downpipe 14 and thedischarge screw 13 having a relatively small pressure loss. Therefore, in order to prevent this, installation of an unreduced height h of the charge material is essentially required for the purpose of generating a reduction in pressure in the reducing gas flowing backwards into thereduction furnace 10 through thedischarge screw 13 and, as a result, the height of a facility must be unnecessarily increased. - An aspect of the present invention provides improvements, such as an increase in production, a decrease in fuel costs, an increase in an operating ratio, and operational stability, by decreasing a thermal load of a melting furnace when a charge material is supplied thereto by removing a non-uniform distribution phenomenon of reducing gas, in which the reducing gas supplied to the inside of a reduction furnace in a reduction process is mainly flowing along a wall portion but not introducing to the center of the reduction furnace thereof, to increase a reduction rate of the charge material and uniformize reduction rates between particles of the charge material.
- Another aspect of the present invention provides an increase in the capacity of a facility, able to be achieved by simply increasing the size of a reduction furnace and a deadman in a radial direction during the increase in the capacity of the reduction furnace by allowing the reducing gas to be uniformly distributed in the radial direction of the reduction furnace.
- According to an aspect of the present invention, there is provided a reduction furnace including: a charge feeding port having a charge material introduced therethrough; and a reducing gas intake port having reducing gas injected therethrough, wherein the charge feeding port is formed in an upper portion thereof and the reducing gas intake port is installed in a bottom portion thereof.
- The reducing gas intake port may be installed in a bottom portion of a deadman disposed in a lower portion of the reduction furnace.
- A path connected to the reducing gas intake port may be formed inside the deadman.
- The path may be formed in plural to be symmetrical in a radial direction.
- A vertical down pipe having the charge material reduced by the reducing gas discharged therethrough may be filled with the charge material in normal operating conditions.
- A drop box may be installed in an end portion of the vertical down pipe and a discharge screw discharging a fixed amount of the charge material may be installed in the drop box.
- The vertical down pipe has a predetermined vertical length to generate a reduction in pressure in gas flowing backwards into the reduction furnace through the vertical down pipe.
- According to the present invention, since reducing gas may be injected through a deadman disposed at the center of a bottom portion of a reduction furnace, a reduction rate of a charge material in the reduction furnace may increase, reduction rates between particles of the charge material may be uniformized, and a thermal load of a melting furnace may be decreased during the charge material is supplied to the melting furnace, and thus, an increase in production, a decrease in fuel costs, an increase in an operating ratio, and operational stability may be achieved.
- Also, in the present invention, the reducing gas may be allowed to be uniformly distributed in a radial direction of the reduction furnace, and thus, an increase in the capacity of a facility may be achieved by simply increasing the size of the reduction furnace and the deadman in the radial direction thereof during the increase in the capacity of the reduction furnace.
- Also, since the position of a discharge screw, a charge material supply device, may be changed from a lower end of the reduction furnace to a portion of a drop box, differential pressure in a vertical down pipe may be generated, and thus, a back flow of high-pressure gas from the melting furnace into the reduction furnace may be prevented.
- The above and other aspects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
-
FIG. 1 is a longitudinal sectional view illustrating a typical reduction furnace reducing ore containing an iron oxide component and an apparatus for manufacturing molten iron by melting reduced ore; and -
FIG. 2 is a longitudinal sectional view illustrating a reduction furnace according to an embodiment of the present invention. - Hereinafter, an embodiment of the present invention is described in detail with reference to the accompanying drawings.
-
FIG. 2 is a longitudinal sectional view illustrating areduction furnace 100 according to an embodiment of the present invention. Referring toFIG. 2 , acharge feeding port 110 and a plurality of exhaustgas discharge ports 120 are included in an upper portion of thereduction furnace 110. A deadman 180 (or a deadwoman, hereinafter, both terms are used interchangeably) is installed in a lower end of the inside of thereduction furnace 100. Thedeadman 180 is installed to prevent the degradation of the charge material due to the accumulative load of the charge material itself or formation of a stationary bed. A reducinggas intake port 170 is installed in a bottom portion of thedeadman 180 and a path is formed inside thedeadman 180 so as to allow the reducing gas injected through the reducinggas intake port 170 to pass therethrough. The reducinggas intake port 170 is formed in the center of thereduction furnace 100 in a radial direction, and the path inside thedeadman 180 connected to the reducinggas intake port 170 may be formed in plural to be symmetrical in the radial direction. - A
vertical down pipe 140 connected to thereduction furnace 100 is installed in a lower portion of thereduction furnace 100 and adrop box 150 is installed in an end portion of the vertical downpipe 140. Adischarge screw 130, an attachable and detachable device for supplying a fixed amount of the charge material, is installed in thedrop box 150. A tilt downpipe 160 connected to a dome portion of a melting furnace is installed in a lower portion of thedrop box 150. - The charge material is introduced into the
reduction furnace 100 through thecharge feeding port 110. The charge material reduced in thereduction furnace 100 is transferred to the vertical downpipe 140 to be discharged by thedischarge screw 130 formed in the end portion of the vertical downpipe 140 in a fixed amount. The discharged charge material is supplied to the melting furnace through the tilt downpipe 160. Meanwhile, reducing gas reduces the charge material and is then discharged through the exhaustgas discharge ports 120. - Inner portions of the
reduction furnace 100 and the vertical downpipe 140 are filled with the charge material in normal operating conditions. - According to the configuration of the
foregoing reduction furnace 100, reducing gas from the melting furnace is allowed to be injected thereinto by the installation of the reducinggas intake port 170 having the reducing gas passed therethrough in the bottom portion of thedeadman 180 installed at the lower end of the inside of the reduction furnace, instead of a typical reducing gas intake port disposed on an intermediate wall portion of the reduction furnace, and thus, uniform distribution in the radial direction may be induced from a typical non-uniform distribution phenomenon of the reducing gas, a reducing gas utilization ratio and a reduction rate of the charge material may be increased, and the reduction rate thereof may be uniformized. Also, an increase in production, a decrease in fuel costs, an increase in an operating ratio, and an increase in operational stability may be achieved by reducing a thermal load of the melting furnace when the charge material is provided to the melting furnace. Further, since the reducing gas may be uniformly distributed in the radial direction of the reduction furnace, an increase in the capacity of facility may be achieved by simply increasing thereduction furnace 100 and thedeadman 180 in the radial direction thereof during the increase in the capacity of thereduction furnace 100. - Also, since the
discharge screw 130, a device for supplying a fixed amount of the charge material, is installed in a portion of thedrop box 150 instead of the lower end of the reduction furnace, a reduction in pressure in the vertical downpipe 140 is generated, and thus, a back flow of high-pressure reducing gas in the melting furnace into thereduction furnace 100 through thedischarge screw 130 may be prevented. That is, the back flow of high-pressure reducing gas in the melting furnace disposed at a lower portion of the tilt downpipe 160 into thereduction furnace 100 due to the generation of differential pressure in the vertical downpipe 140 may be prevented. Typically, installation of an unreduced height h of the charge material is essential for the purpose of generating a reduction in pressure in the reducing gas in order to prevent the back flow of the reducing gas through thedischarge screw 130. However, since the pressure loss may be generated through the vertical downpipe 140 in the present invention, the height of thereduction furnace 100 may be reduced by as much as the unreduced height h of the charge material illustrated inFIG. 1 . - Further, nitrogen is typically injected into the vertical down
pipe 140 for the purpose of reducing thermal shock applied to thedischarge screw 130 by gas flowing backwards from the melting furnace into thereduction furnace 100. However, since nitrogen injected into the vertical downpipe 140 may not be required in thereduction furnace 100 according to the present invention, the amount of nitrogen used may be reduced and operational costs may be reduced. - While the present invention has been shown and described in connection with the exemplary embodiments, it will be apparent to those skilled in the art that modifications and variations can be made without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
- A reduction furnace comprising:a charge feeding port 110 having a charge material introduced therethrough; anda reducing gas intake port 170 having reducing gas injected therethrough,wherein the charge feeding port 110 is formed in an upper portion thereof and the reducing gas intake port 170 is installed in a bottom portion thereof.
- The reduction furnace of claim 1, further comprising a deadman 180 disposed in a lower portion thereof,
wherein the reducing gas intake port 170 is installed in a bottom portion of the deadman 180. - The reduction furnace of claim 2, a path connected to the reducing gas intake port 170 is formed inside the deadman 180.
- The reduction furnace of claim 3, the path is formed in plural to be symmetrical in a radial direction.
- The reduction furnace of any one of claims 1 to 4, further comprising a vertical down pipe 140 having the charge material reduced by the reducing gas discharged therethrough,
wherein inside of the vertical down pipe 140 is filled with the charge material in normal operating conditions. - The reduction furnace of claim 5, wherein a drop box 150 is installed in an end portion of the vertical down pipe 140 and a discharge screw 130 discharging a fixed amount of the charge material is installed in the drop box 150.
- The reduction furnace of claim 6, wherein the vertical down pipe 140 has a predetermined vertical length to generate pressure drop in gas flowing backward into the reduction furnace through the vertical down pipe 140.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/KR2010/004083 WO2011162427A1 (en) | 2010-06-23 | 2010-06-23 | Furnace having even distribution of gas |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2586877A1 true EP2586877A1 (en) | 2013-05-01 |
EP2586877A4 EP2586877A4 (en) | 2016-11-09 |
EP2586877B1 EP2586877B1 (en) | 2018-08-29 |
Family
ID=45371587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10853710.1A Not-in-force EP2586877B1 (en) | 2010-06-23 | 2010-06-23 | Furnace having even distribution of gas |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2586877B1 (en) |
CN (1) | CN102947470A (en) |
WO (1) | WO2011162427A1 (en) |
ZA (1) | ZA201300525B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111893233B (en) * | 2020-07-14 | 2022-05-13 | 钢研晟华科技股份有限公司 | Hydrogen metallurgy shaft furnace system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1458762A1 (en) * | 1965-07-29 | 1969-03-13 | Huettenwerk Oberhausen Ag | Shaft furnace for the direct reduction of iron ore |
JPS5848832B2 (en) * | 1976-10-05 | 1983-10-31 | 石川島播磨重工業株式会社 | Cutting device for reduced iron furnace |
US4032123A (en) * | 1976-10-15 | 1977-06-28 | Armco Steel Corporation | Shaft furnace for direct reduction of ores |
DE3422185A1 (en) * | 1984-06-12 | 1985-12-12 | Korf Engineering GmbH, 4000 Düsseldorf | ARRANGEMENT FROM A CARBURETTOR AND DIRECT REDUCTION STOVE |
DE3723137C1 (en) * | 1987-07-13 | 1989-03-16 | Voest Alpine Ind Anlagen | Device for feeding a melter gasifier with gasifying agents and sponge iron |
KR100470730B1 (en) * | 2001-02-12 | 2005-02-21 | 주식회사 자원리싸이클링 연구소 | Smelting Incineration Apparatus and Method of Solid Waste Treatment |
KR100711777B1 (en) * | 2005-12-26 | 2007-04-25 | 주식회사 포스코 | Method for manufacturing molten irons improving charging method and apparatus for manufacturing molten irons using the same |
-
2010
- 2010-06-23 EP EP10853710.1A patent/EP2586877B1/en not_active Not-in-force
- 2010-06-23 WO PCT/KR2010/004083 patent/WO2011162427A1/en active Application Filing
- 2010-06-23 CN CN2010800675952A patent/CN102947470A/en active Pending
-
2013
- 2013-01-21 ZA ZA2013/00525A patent/ZA201300525B/en unknown
Also Published As
Publication number | Publication date |
---|---|
ZA201300525B (en) | 2013-09-25 |
EP2586877A4 (en) | 2016-11-09 |
EP2586877B1 (en) | 2018-08-29 |
CN102947470A (en) | 2013-02-27 |
WO2011162427A1 (en) | 2011-12-29 |
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