WO2002084192A1 - Kühlelement zur kühlung eines metallurgischen ofens - Google Patents
Kühlelement zur kühlung eines metallurgischen ofens Download PDFInfo
- Publication number
- WO2002084192A1 WO2002084192A1 PCT/EP2002/003209 EP0203209W WO02084192A1 WO 2002084192 A1 WO2002084192 A1 WO 2002084192A1 EP 0203209 W EP0203209 W EP 0203209W WO 02084192 A1 WO02084192 A1 WO 02084192A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- furnace
- cooling
- coolant
- cooling element
- plate
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
- F27B3/24—Cooling arrangements
-
- 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
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
-
- 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
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/0002—Cooling of furnaces
- F27D2009/0051—Cooling of furnaces comprising use of studs to transfer heat or retain the liner
- F27D2009/0054—Cooling of furnaces comprising use of studs to transfer heat or retain the liner adapted to retain formed bricks
Definitions
- the invention relates to a cooling element for cooling a metallurgical furnace, in particular the slag and / or the metal zone of this furnace, the furnace shell of the furnace being supplied with refractory material on its side facing the furnace interior, and the cooling element being a cooling part through which coolant flows , which has a coolant inlet and outlet, and
- the invention relates to a system for cooling a metallurgical furnace, which consists of at least one of these cooling elements, and one with one
- Such metallurgical furnaces are used in the production of non-ferrous metals and pig iron.
- round or rectangular ovens are used, in which the required energy is generated by self-baking electrodes
- the melting process begins by introducing the energy via a free-burning arc, which dips into it after the formation of a foam slag.
- the electrodes are immersed in the conductive, liquid slag, the radiated energy is completely transferred to the metal bath by resistance heating of the slag.
- the thermal circulation is particularly stimulated by buoyancy forces due to changes in density due to cooling on the furnace wall.
- This circulation of the slag towards the furnace wall leads to a particularly high wear of the refractory material with which the melting furnace is lined - and also due to the chemical attack by the slag.
- This wear only comes to a standstill when the furnace wall made of refractory material is cooled so well for a given heat load that on its hot side - i.e. the side facing the furnace interior - forms a crust from solidified slag.
- Such a crust is known under the term "freeze line”.
- This solidified slag layer protects the refractory material against further slag erosion or corrosion and is therefore a desired protective layer.
- the higher the melting capacity of the furnace and thus the heat flows to be dissipated the thinner the remaining wall thickness of the refractory material.
- Such “waffle coolers” are Plate-shaped bodies made of copper with cast-in tubes, which are provided on their hot side with dovetail-shaped grooves and ribs. Stones made of refractory material are inserted into these grooves or refractory materials are stamped into them.
- the cooling effect of the ribs in the "waffle coolers” means that the desired “freeze line” is formed when the refractory material comes into direct contact with liquid slag. While such “waffle coolers” advantageously take on a supporting function, they have the disadvantage of high weight and the resulting high manufacturing costs.
- Fingers are copper pipes with a round cross section. However, it proves difficult to insert such pipes into the cuboid refractory bricks.
- the known plate coolers do not have this disadvantage. However, like the fingers, these have to be heavy and solid, since their dimensions are determined by the diameter of the bores running in them for the cooling water, which makes production cost-intensive.
- Fingers, plate coolers and the waffle coolers do not penetrate the entire thickness of the refractory furnace wall when they are new, but still require masonry in front of their front end wall. In addition, they remain without a connection to the outer wall of the furnace, the so-called tank, so that constraints caused by different thermal expansions of the refractory masonry and the tank are avoided.
- the cooling element made of cast copper comprises a water-cooled connecting part, on which several massive plate coolers are arranged like a comb, which protrude into the interior of the furnace. Refractory material is arranged between the plate coolers.
- the connecting part is arranged outside the furnace shell. The thickness and center distance of the plate coolers can be varied.
- a disadvantage of this solution is that the load on the hot side becomes very large when the plate cooler is used, combined with the risk of oxidizing the copper and a loss of thermal conductivity, while when thicker plate coolers are used, the material costs increase and one asymmetrical cooling is the result.
- the invention is therefore based on the object of providing a cooling element and a cooling system for a metallurgical furnace which, while avoiding the disadvantages mentioned above, has a hot side which immediately forms a freeze-line in the operating state.
- a furnace is to be provided which has a high mechanical stability when equipped with such a system.
- the entire hot part is designed as a - single - plate and that the plate on the cold side, i.e. on its side facing away from the inside of the furnace, a separate cooling section, provided with a coolant inlet and outlet, is assigned.
- a cooling element is formed from a single plate, on which a separate cooling part is arranged which is independent of other cooling elements.
- a favorable ratio of the area of the hot part to the area of the cooling part is achieved, associated with favorable cooling properties.
- a protective layer or freeze-line quickly forms in the operating state directly on the hot side of the cooling element, ie on the front side of the refractory material pointing in the direction of the furnace interior and the front side of the plate.
- the cooling part is a tube, the plate with its side pointing away from the interior of the furnace being attached to the tube parallel to the longitudinal axis of the tube.
- the connection is achieved via a full connection, preferably by welding, in order to ensure good heat transfer.
- the cooling element consists of a copper plate and a copper tube and here of standard size parts that are available in stock, which considerably reduces the material and, above all, the processing costs. Overall, a versatile, inexpensive and reliable cooling element is created in this way. It is also particularly advantageous that the components used (plate, tube) do not have a coarse-grained cast structure due to their type of manufacture (rollers, extrusion), but rather a uniform, fine-grained structure. This results in better thermal conductivity properties and a lower tendency to crack or spread.
- the plate is preferably very thin in the form of a sheet.
- the plate thickness comprises ranges from 10 to 40 mm, preferably from 20 to 40 mm.
- type I cooling system with vertically arranged cooling elements, the cooling part or tube of which is arranged outside the furnace shell
- Type II cooling system with vertically arranged cooling elements, the cooling part or tube of which is arranged inside the furnace shell
- Type III cooling system with horizontally arranged cooling elements, the cooling part or tube of which is arranged outside the furnace shell
- Type IV cooling system with horizontally arranged cooling elements, the cooling part or tube of which is arranged inside the furnace shell.
- the cooling systems are designed by selecting the geometry of the plates and / or the distance between the hot side and the cooling part and / or the distance between the plates.
- the plate of the hot part is thin.
- the distance between the hot side and the refrigerator compartment, i.e. the pipe is relatively short.
- the plate preferably has a rectangular geometry.
- the vertical or horizontal distance of the cooling elements from their nearest adjacent cooling element is dimensioned in accordance with one or a multiple of the height or width format of refractory bricks as refractory material.
- this has the advantage that the number of cooling elements arranged one above the other can be flexibly adapted to the height of the slag zone or the metal zone. Cutting work on the refractory stones is no longer necessary; the assembly effort decreases.
- Cooling elements of a cooling system in series on the water side, the coolant outlet being one Cooling element - if necessary via a rigid connecting pipe or flexible connecting lines - is connected to the coolant inlet of an adjacent cooling element.
- the number of cooling elements that can be connected in series depends on the available cooling water quality and / or the permissible maximum temperature of the cooling water.
- the furnace construction in particular the furnace wall, should be adapted to the individual cooling systems and their special features.
- a round or a rectangular melting furnace is proposed, the furnace shell of which is drawn in in the region of the cooling zone towards the interior of the furnace and which has bulkhead plates to support the now protruding upper region of the furnace part.
- This furnace shell construction achieves that the weakening of its mechanical load-bearing capacity is compensated for with a relatively small vertical distance due to the horizontal slits necessary for the cooling elements.
- slots with a length corresponding to the horizontal extent of the cooling element are made in the furnace shell.
- the height of the slots is advantageously chosen so that the respective cooling element can take part in the unavoidable thermal expansion of the refractory material without being hindered in this movement by the top or bottom edge of the slot. This results in a relatively large height of the slots.
- Type IV With the cooling system according to type IV, only smaller openings and thus weak points need to be made in the furnace shell for the coolant outlets and inlets of the cooling part or the pipe compared to type III. With this solution, the static load-bearing capacity of the furnace is only slightly reduced. However, the load-bearing capacity can be increased by the staggered arrangement of the cooling elements arranged one above the other.
- Type I and II cooling systems are particularly suitable for round ovens.
- the geometry of the plates, specifically their length, is preferably adapted to the height of the slag zone.
- a furnace shell weakened in its stability due to the vertical slots can absorb the ring stresses from the thermal expansion of the refractory -Materials are mechanically reinforced by ribs or rings, ensuring that the vertical slots in the furnace shell allow free movement of the cooling elements integrated in the refractory material, in particular upwards.
- FIG. 1 shows a side view of a section of a cooling element proposed according to the invention, which is composed of a plate and a tube;
- FIG. 2 shows a cross section of the cooling element according to FIG. 1 along the line A-A; 3 shows a vertical section through a furnace wall with an integrated cooling system of type III and molded-in furnace shell; 4 shows a horizontal section B-B through a furnace wall with a cooling system according to FIG. 3;
- 5 shows a vertical section through a furnace wall with an integrated cooling system of type IV
- 6 shows a horizontal section BB through a furnace wall with a cooling system according to FIG. 5
- 7 shows a cooling system according to type IV, the cooling elements lying one above the other being arranged offset
- 8 is a vertical section through a furnace wall with an integrated cooling system according to type I.
- a cooling element 1 shows a section of a cooling element 1, which is composed of a cooling part 2 through which a coolant, for example cooling water, flows, in the form of a tube 3 with an inner diameter d and a wall thickness d w, and a hot part 4 which is only cooled by thermal conduction.
- the hot part 4, which is therefore not flowed through by cooling water, consists of a thin plate 5 made of copper, which is hereinafter referred to as copper sheet.
- the tube 3 is also made of copper and corresponds to a standard copper tube dimension.
- the copper sheet is welded with its cold-side long side 6 to the pipe jacket 7 parallel to the pipe longitudinal axis and, starting from the hot side 8, is provided with slots 9 which in the embodiment shown extend to the weld seam 10.
- the heat impinging on the hot side 8 from the furnace interior O is released by means of heat conduction through the copper sheet to the pipe 3 and here to the coolant flowing through the pipe 3.
- the full connection between copper sheet and tube 3 - here in the form of the weld seam 10 - which enables undisturbed heat transport is also evident in FIG. 2.
- the copper sheet is relatively thin, preferably between 20 to 40 mm thin. Copper sheet of a standard size is also advantageously used. In combination with the slots 9, a flexible copper sheet results, which enables high heat transfer and at the same time can take part in thermal expansion of the refractory material.
- FIG. 3 The arrangement of a plurality of cooling elements 101 to form a cooling system is shown in FIG. 3.
- the cooling elements 101 are arranged horizontally, ie the hot part 104 designed as copper sheet is installed in the furnace wall 112 such that the plate plane extends perpendicular to the longitudinal axis of the furnace.
- the furnace wall 112 is composed of the furnace shell 13 and refractory material 114, with which the furnace is closed on its side facing the furnace interior O.
- the furnace shell 113 is lined with refractory bricks 115 of a certain height dimension H F and filled with refractory ramming compound 116 in the transition to the refractory bricks 115.
- the individual cooling elements 101 are arranged in the cooling zone in such a way that the hot side 108 of the thin copper plate 105 or the copper sheet, ie the end face directly exposed to the furnace atmosphere, is flush with the front side 117 of the refractory bricks pointing into the furnace interior O, in the installed state 115 completes, ie no refractory material is required in front of the front of the copper plates.
- the cooling elements 101 are arranged one above the other at a distance of two refractory bricks 115, the lining being held in each case by a stone anchor 118 on the furnace shell 113. Due to their construction and the arrangement between the refractory bricks, the cooling elements are largely self-supporting, which saves fasteners.
- the copper pipes 103 assigned to each individual copper sheet, which form a cooling channel 119, are arranged outside the furnace shell 113.
- tube sections 120, 121 or transitions to coolant inlets 122 or coolant outlets 123 are provided, cf. see also FIG. 4.
- the favorable ratio of the area of the hot part 104 to the area of the cooling part 102 of the individual cooling elements 101 quickly forms a protective layer or freeze-line 124 along the hot side of the lining (it is only a section of the shown freeze-line). In this way, the remaining wall thickness of the refractory bricks 1 15 not attacked by erosion is large.
- the furnace shell 113 Since the copper tubes 103 of the individual cooling elements 101 lie outside the furnace shell 113, 13 corresponding openings 125 are in the furnace shell 11 or slots introduced which are somewhat longer than the copper sheet length and whose height Ho must not be too low, so that the copper sheet is not hindered when the refractory bricks 115 move in the slot opening 125.
- the furnace shell 113 is curved inwards in the region of the cooling zone formed by the cooling system 11, which can roughly correspond to the slag zone (cf. FIG. 3). Forces acting on the furnace shell 113 from higher lying parts of the furnace construction 126 are absorbed via bulkhead plates 127 or passed on downwards.
- the metal zone adjoining the slag zone can also be formed with such a cooling system 11 or - as shown here - with a trickle cooling 128 acting on the furnace shell 113 from the outside.
- the furnace shell 113 is encased on its side facing away from the inside of the furnace in such a way that an intermediate space 129 is created. Cooling water is introduced into the intermediate space 129 by means of a feed pipe 130 in such a way that it trickles down along the outside of the furnace shell 113.
- FIG. 4 shows a horizontal section through the cooling system 11 shown in FIG. 3 in the furnace wall 112 of a melting furnace along the line B-B-.
- the length of the copper pipes 103 which can assume values between one meter and several meters, or even below one meter, corresponds approximately to the length of the copper sheet.
- the cooling system type III (11) described above with copper pipes lying outside the furnace shell is used in particular in melting furnaces which are supplied with refractory material which reacts with water at high temperatures, such as magnesium oxide. If an arrangement of coolant pipes inside the furnace shell can be accepted, a cooling element system according to type IV (12) is used, which in 5 and 6 is shown in more detail.
- FIG. 5 shows a vertical section through a furnace wall 212, while FIG. 6 shows a horizontal section.
- the copper tubes 203 with the cooling channel 219 of the cooling elements 201 are arranged within the refractory ramming mass 216, which is located between the furnace shell 213 and the refractory bricks 215.
- the thin plates 205 or copper sheets are arranged between individual refractory bricks 215.
- the furnace shell 213 is provided with openings 225 for the passage of the two pipe sections 220, 221 for the respective coolant inlet 222 and the respective coolant outlet 223 of each copper pipe 203.
- partition plates 227 can be provided to increase the stability (see FIG. 6), which extend on the cold side of the furnace shell 213 in the furnace vessel 230.
- FIG. 7 shows - seen from the cold side of the furnace shell - a cooling system of the type IV (12) with internal copper tubes 203 of cooling elements 201 of a first, second, third and fourth level arranged horizontally one above the other. Cooling water enters the copper pipes 203 of the cooling elements 201 of the first or lowest level via a common feed channel 231 through the inlet pipe sections 220, which protrude through respective openings in the furnace shell, in order to exit again through corresponding outlet pipe sections 221.
- the cooling water does not exit immediately, but is transported via internal connecting pipes 232, likewise embedded in the refractory ramming compound, to the inlet pipe sections 220 of the copper pipe 203 of the cooling elements 201 of the next higher level.
- This cooling water transport continues until the copper pipes 203 of the cooling elements 201 of the fourth or top level have flowed through and the cooling water through outlet pipe sections 221 and cooling water sections. run 223 exits in a common return channel, from there to be led into a cooling water recooling system (not shown).
- FIG. 8 shows a vertical section of cooling elements of a system according to type I (13).
- the cooling elements 301 are arranged in the furnace wall in such a way that the plane of the plates 305 or the longitudinal axis of the copper pipes 303 runs parallel to the longitudinal axis of the furnace.
- the cooling part 302 or the copper tube 303 of each cooling element 301 is located outside the furnace 313.
- the length of the copper sheets preferably corresponds to the height of the slag zone. With 309 the slots of the copper sheet are designated.
- narrow but long openings 325 or slots are made in the furnace shell 313.
- the furnace shell 313 is preferably reinforced by ribs or rings 335a, b.
Landscapes
- 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)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Furnace Details (AREA)
- Details Of Measuring And Other Instruments (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50203089T DE50203089D1 (de) | 2001-04-18 | 2002-03-22 | Kühlelement zur kühlung eines metallurgischen ofens |
EP02724254A EP1381817B1 (de) | 2001-04-18 | 2002-03-22 | Kühlelement zur kühlung eines metallurgischen ofens |
AT02724254T ATE295521T1 (de) | 2001-04-18 | 2002-03-22 | Kühlelement zur kühlung eines metallurgischen ofens |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10119034.4 | 2001-04-18 | ||
DE10119034A DE10119034A1 (de) | 2001-04-18 | 2001-04-18 | Kühlelement zur Kühlung eines metallurgischen Ofens |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002084192A1 true WO2002084192A1 (de) | 2002-10-24 |
Family
ID=7681872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/003209 WO2002084192A1 (de) | 2001-04-18 | 2002-03-22 | Kühlelement zur kühlung eines metallurgischen ofens |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1381817B1 (de) |
CN (1) | CN100342194C (de) |
AT (1) | ATE295521T1 (de) |
DE (2) | DE10119034A1 (de) |
ES (1) | ES2242855T3 (de) |
PT (1) | PT1381817E (de) |
RU (1) | RU2281974C2 (de) |
WO (1) | WO2002084192A1 (de) |
ZA (1) | ZA200308040B (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102252782A (zh) * | 2011-05-10 | 2011-11-23 | 上海量值测控仪器科技有限公司 | 卧式热电偶检定炉专用降温加速器 |
DE102012214147A1 (de) | 2012-05-11 | 2013-11-14 | Sms Siemag Ag | Seitenwandkühlung für Schmelzöfen |
CN111607674A (zh) * | 2020-06-29 | 2020-09-01 | 盐城市联鑫钢铁有限公司 | 一种促使高炉炉缸快速升温的方法及装置 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LU91455B1 (en) * | 2008-06-06 | 2009-12-07 | Wurth Paul Sa | Gap-filler insert for use with cooling plates for a metallurgical furnace |
LU91454B1 (en) * | 2008-06-06 | 2009-12-07 | Wurth Paul Sa | Cooling plate for a metallurgical furnace |
WO2010076368A1 (en) * | 2008-12-29 | 2010-07-08 | Luvata Espoo Oy | Method for producing a cooling element for pyrometallurgical reactor and the cooling element |
AT508292B1 (de) * | 2009-05-28 | 2011-03-15 | Mettop Gmbh | Verfahren zur kühlung eines metallurgischen ofens sowie kühlkreislaufsystem für metallurgischeöfen |
RU2555697C2 (ru) * | 2013-10-15 | 2015-07-10 | Общество С Ограниченной Ответственностью "Медногорский Медно-Серный Комбинат" | Футеровка стенки металлургической печи |
FI20146035A (fi) * | 2014-11-25 | 2016-05-26 | Outotec Finland Oy | Menetelmä metallurgisen uunin rakentamiseksi, metallurginen uuni, ja pystysuuntainen jäähdytyselementti |
CN105716429B (zh) * | 2016-03-21 | 2017-12-22 | 中国恩菲工程技术有限公司 | 冷却系统 |
CN107606961B (zh) * | 2017-10-17 | 2023-11-24 | 山东泓奥电力科技有限公司 | 液态炉渣余热回收装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1724098A (en) * | 1927-04-02 | 1929-08-13 | American Smelting Refining | Furnace-roof construction |
DE2924991A1 (de) * | 1979-06-21 | 1981-01-15 | Lentjes Dampfkessel Ferd | Wassergekuehltes ofenwandelement |
WO1990005886A1 (en) * | 1988-11-21 | 1990-05-31 | Mefos-Stiftelsen För Metallurgisk Forskning | A cooling panel |
US5785517A (en) * | 1994-02-16 | 1998-07-28 | The University Of Melbourne | Cooling arrangements for refractory wall linings |
-
2001
- 2001-04-18 DE DE10119034A patent/DE10119034A1/de not_active Withdrawn
-
2002
- 2002-03-22 EP EP02724254A patent/EP1381817B1/de not_active Expired - Lifetime
- 2002-03-22 ES ES02724254T patent/ES2242855T3/es not_active Expired - Lifetime
- 2002-03-22 RU RU2003133461/02A patent/RU2281974C2/ru not_active IP Right Cessation
- 2002-03-22 AT AT02724254T patent/ATE295521T1/de active
- 2002-03-22 CN CNB028122542A patent/CN100342194C/zh not_active Expired - Fee Related
- 2002-03-22 DE DE50203089T patent/DE50203089D1/de not_active Expired - Lifetime
- 2002-03-22 PT PT02724254T patent/PT1381817E/pt unknown
- 2002-03-22 WO PCT/EP2002/003209 patent/WO2002084192A1/de not_active Application Discontinuation
-
2003
- 2003-10-16 ZA ZA200308040A patent/ZA200308040B/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1724098A (en) * | 1927-04-02 | 1929-08-13 | American Smelting Refining | Furnace-roof construction |
DE2924991A1 (de) * | 1979-06-21 | 1981-01-15 | Lentjes Dampfkessel Ferd | Wassergekuehltes ofenwandelement |
WO1990005886A1 (en) * | 1988-11-21 | 1990-05-31 | Mefos-Stiftelsen För Metallurgisk Forskning | A cooling panel |
US5785517A (en) * | 1994-02-16 | 1998-07-28 | The University Of Melbourne | Cooling arrangements for refractory wall linings |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102252782A (zh) * | 2011-05-10 | 2011-11-23 | 上海量值测控仪器科技有限公司 | 卧式热电偶检定炉专用降温加速器 |
DE102012214147A1 (de) | 2012-05-11 | 2013-11-14 | Sms Siemag Ag | Seitenwandkühlung für Schmelzöfen |
WO2013167677A1 (de) | 2012-05-11 | 2013-11-14 | Sms Siemag Ag | Seitenwandkühlung für schmelzöfen |
CN111607674A (zh) * | 2020-06-29 | 2020-09-01 | 盐城市联鑫钢铁有限公司 | 一种促使高炉炉缸快速升温的方法及装置 |
Also Published As
Publication number | Publication date |
---|---|
CN1518657A (zh) | 2004-08-04 |
EP1381817B1 (de) | 2005-05-11 |
DE50203089D1 (de) | 2005-06-16 |
RU2281974C2 (ru) | 2006-08-20 |
ATE295521T1 (de) | 2005-05-15 |
CN100342194C (zh) | 2007-10-10 |
DE10119034A1 (de) | 2002-10-24 |
RU2003133461A (ru) | 2005-05-10 |
PT1381817E (pt) | 2005-08-31 |
ES2242855T3 (es) | 2005-11-16 |
EP1381817A1 (de) | 2004-01-21 |
ZA200308040B (en) | 2004-06-07 |
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