EP0950722A1 - Refroidissement d'un haut fourneau - Google Patents
Refroidissement d'un haut fourneau Download PDFInfo
- Publication number
- EP0950722A1 EP0950722A1 EP99107137A EP99107137A EP0950722A1 EP 0950722 A1 EP0950722 A1 EP 0950722A1 EP 99107137 A EP99107137 A EP 99107137A EP 99107137 A EP99107137 A EP 99107137A EP 0950722 A1 EP0950722 A1 EP 0950722A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blast furnace
- frame
- furnace
- cooling elements
- wall
- 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- Withdrawn
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 15
- 239000004020 conductor Substances 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 239000010949 copper Substances 0.000 claims abstract description 7
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 229910000805 Pig iron Inorganic materials 0.000 claims description 16
- 239000011819 refractory material Substances 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 238000003723 Smelting Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 7
- 239000000498 cooling water Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 239000007791 liquid phase Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 241000237858 Gastropoda Species 0.000 description 3
- 201000005569 Gout Diseases 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000692870 Inachis io Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
- C21B7/106—Cooling of the furnace bottom
Definitions
- the invention relates to a blast furnace in shaft furnace construction for the continuous smelting of processed iron ores to molten pig iron, with a furnace wall made of refractory Materials particularly in the lower area of the Blast furnace, the rest and the frame below it, with is encased in a metal jacket and with between the Refractory furnace wall and the metal jacket arranged water-cooled cooling elements, for example Plate cooling elements.
- furnace wall is made of one for these conditions suitable refractory material, the furnace wall at least in its lower area by a metal jacket (Armor) is covered.
- Armor metal jacket
- the external cooling is either by an open one Sprinkling the frame armor with water or through a Guiding the cooling water with the help of the metal armor Cooling cassettes welded in parallel.
- Water-cooled plate coolers are used for internal cooling Cast iron used between the fireproof furnace wall and the furnace is arranged parallel to it.
- the Cooling water is led into steel pipes that run into the body of the Plate cooler are cast.
- the pipes pass through corresponding openings in the blast furnace shell to the outside where they with a cooling water inlet and cooling water drain pipe are connected.
- the known frame wall cooling systems also fail here direct contact with the molten pig iron because it is due their low thermal conductivity are unable to large amounts of heat from the molten pig iron so quickly dissipate that the pig iron solidifies before the material of the Melting cooling elements or the frame armor.
- Breakthroughs are caused by the direct impact of escaping substances, through radiant heat and through Oxyhydrogen explosions that can occur when water comes out defective cooling elements comes into contact with pig iron, Destruction in the entire furnace area.
- the blast furnace falls as Often follow such damage for a long time (days to Weeks). It is characteristic of many breakthroughs that they occur suddenly and without warning signs. Conditionally due to the destruction in the area of the breakthrough Cause mostly not to be reconstructed.
- the object of the invention is to cool the blast furnace frame so that the liquid phases improve the blast furnace can no longer melt if the refractory Frame lining failed for some reason.
- the task is in a blast furnace described type with the characteristic features of the Claim 1 solved in that in the frame area of the Blast furnace between the rack furnace wall and the one enveloping it Metal jacket, the frame armor, arranged water-cooled Cooling elements made of a highly thermally conductive material are whose thermal conductivity is at least five times as large like that of cast iron, for example copper.
- This feature of the invention ensures that liquid pig iron in a breakthrough through the refractory Masonry to a solid layer on the plate coolers or already on the outside of the refractory wall stiffens.
- the cooling therefore has one Self-protection mechanism because the solidified layer in front of you further attack by molten pig iron or molten Protects slag.
- time is saved and the Possibility created to shutdown the blast furnace as planned and prepare the necessary repair work.
- the measures according to the invention are based on the variant the internal cooling is limited because the The thermal resistance of the frame armor itself is negligible reduced if the external cooling elements from one highly thermally conductive material are made.
- This highly thermally conductive material can be used to advantage can also be used according to the invention in the form of correspondingly designed cooling elements intensive cooling of the rack floor. This way too damage to the refractory delivery is prevented here, that lead to deepening in the ground (furnace sow) and that often several meters depth with longer operating times of the blast furnace reachable.
- the invention is not only successful with the emergence of Breakthroughs prevented, but by the now essential is more intensive cooling compared to known cooling devices it is now possible to even out the wall thicknesses of the usually pre-built refractory material in the frame bring about. Because since the refractory material is more intense than is usually cooled so far, and thus the thermal Wear caused by contact with the liquid phases progresses more slowly and more slowly than before If it comes to a standstill, the fireproof at these points Delivery equalized, d. H. run thinner. This means that the frame armor can also be cylindrical in new buildings run and the usual to the ground widening conical shape to accommodate additional Refractory material volume is no longer required.
- the illustrated embodiment shows a blast furnace (1) known conventional design, in the countercurrent principle processed. Iron ores are smelted.
- the blast furnace (1) is known to be essentially divided into four different areas; these are the gout (2), the shaft (3), the latch (4) and the frame (5).
- the input materials consisting of the ores, aggregates and the Coke reducing agents are in the blast furnace (1) abandoned upper part, the gout (2).
- This wind Input materials are heated and there are combustion reactions and the reduction of iron ores takes place.
- These reactions take place in the middle part of the blast furnace (1), the shaft (3) and below it in the rest (4) instead and it form molten pig iron and molten slugs that accumulate in the frame (5), the liquid pig iron due to its higher density below the slug orders.
- Via outlet openings that are at the height of the Arrows (10) the molten pig iron is drained off. There are outlet openings for the molten slag about it are not shown in Fig. 1.
- the frame (5) is made of a suitable refractory material (7, 7 ') walled in contact with molten iron and molten slug is largely resistant and not gets destroyed.
- Refractory lining (7) of the frame (5) is executed up to the height of the peacock (9).
- the frame armor Between this fireproof brickwork (7) and the enveloping Metal jacket (8), the frame armor, are cooling elements (13), for example, plate cooling elements arranged according to the invention from a highly thermally conductive material are made. According to the invention are also in the rack floor (12) these cooling elements arranged.
- FIG. 2 the subject of the invention is in one enlarged partial section of FIG. 1 shown and shows in a simplified representation the frame (5), the rest (4) and the lower part of the shaft (3) of the blast furnace (1).
- Frame (5) and latch (4) are made of a fire-proof Material, the lining (7, 7 ') made by a Metal jacket (8), the armor, is covered.
- the fireproof Brick lining (7) is sufficient in the illustrated embodiment to the top of the rest (4).
- cooling elements (13) are arranged, which according to Invention from a highly thermally conductive material, for example copper. 2, these are sufficient Cooling elements (13) from the rack base (12) over the blow molds (6) up to the height of the arrow (9).
- the cooling elements (13) are with one arranged outside the metal jacket (8) Pipe system (14) connected through which the supply of Cooling elements (13) with a sufficiently large amount of cooling water is ensured.
- cooling elements (13) can only be represented schematically due to the size relationships, so that the drawing figures the formation of the cooling elements (13) cannot be removed. But this is not the case either required because known and proven cooling elements, such as for example plate cooling elements can be used, provided they are made according to the invention from one highly thermally conductive material, for example copper, manufactured.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19816867A DE19816867A1 (de) | 1998-04-16 | 1998-04-16 | Hochofen |
| DE19816867 | 1998-04-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0950722A1 true EP0950722A1 (fr) | 1999-10-20 |
Family
ID=7864713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99107137A Withdrawn EP0950722A1 (fr) | 1998-04-16 | 1999-04-13 | Refroidissement d'un haut fourneau |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20030020212A1 (fr) |
| EP (1) | EP0950722A1 (fr) |
| JP (1) | JPH11323414A (fr) |
| DE (1) | DE19816867A1 (fr) |
| ZA (1) | ZA992427B (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI112534B (fi) * | 2000-03-21 | 2003-12-15 | Outokumpu Oy | Menetelmä jäähdytyselementin valmistamiseksi ja jäähdytyselementti |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2333439A (en) * | 1941-08-04 | 1943-11-02 | Inland Steel Co | Method of and means for cooling high temperature structures |
| DE1956837A1 (de) * | 1969-11-12 | 1971-05-27 | Demag Ag | Bodenkuehleinrichtung fuer Schachtoefen,insbesondere fuer Hochoefen |
| FR2164218A5 (fr) * | 1971-12-01 | 1973-07-27 | Hoogovens Ijmuiden Bv | |
| US3849587A (en) * | 1973-10-15 | 1974-11-19 | Hatch Ass Ltd | Cooling devices for protecting refractory linings of furnaces |
| US4061317A (en) * | 1977-02-23 | 1977-12-06 | Sergei Mikhailovich Andoniev | Blast furnace bottom cooling arrangement |
| JPH06158131A (ja) * | 1992-11-30 | 1994-06-07 | Kawasaki Steel Corp | 高炉炉底部の側壁冷却装置 |
| JPH0711314A (ja) * | 1993-06-23 | 1995-01-13 | Kawasaki Steel Corp | 高炉炉底部の側壁冷却装置 |
| JPH09157716A (ja) * | 1995-12-05 | 1997-06-17 | Nippon Steel Corp | 高炉炉底の冷却構造 |
| WO1998032883A1 (fr) * | 1997-01-29 | 1998-07-30 | Hoogovens Staal B.V. | Paroi refractaire, cuve mettalurgique contenant une telle paroi et procede dans lequel on utilise cette paroi |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2709549C3 (de) * | 1977-03-04 | 1982-01-28 | Vsesojuznyj naučno-issledovatel'skij i proektnyj institut po očistke technologičeskich gazov, stočnych vod i ispol'zovaniju vtoričnych energoresursov predprijatij černoj metallurgii VNIPI Čermetenergoočistka, Charkov | Vorrichtung zum Verdampfungskühlen des Hochofenunterteils |
| DE59409106D1 (de) * | 1994-10-07 | 2000-03-02 | Schloemann Siemag Ag | Kühlplatte für Schachtöfen |
| DE19503912C2 (de) * | 1995-02-07 | 1997-02-06 | Gutehoffnungshuette Man | Kühlplatte für Schachtöfen, insbesondere Hochöfen |
| ES2164183T3 (es) * | 1995-05-05 | 2002-02-16 | Sms Demag Ag | Placas de refrigeracion para hornos de cuba. |
-
1998
- 1998-04-16 DE DE19816867A patent/DE19816867A1/de not_active Withdrawn
-
1999
- 1999-03-30 ZA ZA9902427A patent/ZA992427B/xx unknown
- 1999-04-13 EP EP99107137A patent/EP0950722A1/fr not_active Withdrawn
- 1999-04-15 JP JP11108484A patent/JPH11323414A/ja not_active Withdrawn
-
2002
- 2002-09-17 US US10/245,073 patent/US20030020212A1/en not_active Abandoned
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2333439A (en) * | 1941-08-04 | 1943-11-02 | Inland Steel Co | Method of and means for cooling high temperature structures |
| DE1956837A1 (de) * | 1969-11-12 | 1971-05-27 | Demag Ag | Bodenkuehleinrichtung fuer Schachtoefen,insbesondere fuer Hochoefen |
| FR2164218A5 (fr) * | 1971-12-01 | 1973-07-27 | Hoogovens Ijmuiden Bv | |
| US3849587A (en) * | 1973-10-15 | 1974-11-19 | Hatch Ass Ltd | Cooling devices for protecting refractory linings of furnaces |
| US4061317A (en) * | 1977-02-23 | 1977-12-06 | Sergei Mikhailovich Andoniev | Blast furnace bottom cooling arrangement |
| JPH06158131A (ja) * | 1992-11-30 | 1994-06-07 | Kawasaki Steel Corp | 高炉炉底部の側壁冷却装置 |
| JPH0711314A (ja) * | 1993-06-23 | 1995-01-13 | Kawasaki Steel Corp | 高炉炉底部の側壁冷却装置 |
| JPH09157716A (ja) * | 1995-12-05 | 1997-06-17 | Nippon Steel Corp | 高炉炉底の冷却構造 |
| WO1998032883A1 (fr) * | 1997-01-29 | 1998-07-30 | Hoogovens Staal B.V. | Paroi refractaire, cuve mettalurgique contenant une telle paroi et procede dans lequel on utilise cette paroi |
Non-Patent Citations (5)
| Title |
|---|
| GÖTZ FUNKE: "KÜHLUNG EINES HOCHOFENS MIT KUPFERKÜHLPLATTEN", STAHL UND EISEN, vol. 100, no. 23, 17 November 1980 (1980-11-17), DÜSSELDORF,DE, pages 1395 - 1399, XP002110815 * |
| HILLE H: "THE COPPER STAVE - A MAJOR FACTOR IN PROLONGING THE SERVICE LIFE OFTHE BLAST FURNACE", MAN RESEARCH ENGINEERING MANUFACTURING, 1 January 1997 (1997-01-01), pages 72 - 79, XP000755403, ISSN: UNKNOWN * |
| PATENT ABSTRACTS OF JAPAN vol. 018, no. 485 (C - 1248) 9 September 1994 (1994-09-09) * |
| PATENT ABSTRACTS OF JAPAN vol. 095, no. 004 31 May 1995 (1995-05-31) * |
| PATENT ABSTRACTS OF JAPAN vol. 97, no. 10 31 October 1997 (1997-10-31) * |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11323414A (ja) | 1999-11-26 |
| ZA992427B (en) | 1999-07-23 |
| US20030020212A1 (en) | 2003-01-30 |
| DE19816867A1 (de) | 1999-10-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19990429 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE ES FI FR GB GR IT LI LU NL PT SE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SMS DEMAG AG |
|
| AKX | Designation fees paid |
Free format text: AT BE CH DE ES FI FR GB GR IT LI LU NL PT SE |
|
| 17Q | First examination report despatched |
Effective date: 20021030 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
| 18W | Application withdrawn |
Effective date: 20041029 |