US3881860A - Cooled shaft-furnace and stave-cooler to be used therefor - Google Patents

Cooled shaft-furnace and stave-cooler to be used therefor Download PDF

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Publication number
US3881860A
US3881860A US425853A US42585373A US3881860A US 3881860 A US3881860 A US 3881860A US 425853 A US425853 A US 425853A US 42585373 A US42585373 A US 42585373A US 3881860 A US3881860 A US 3881860A
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Prior art keywords
cooler
projection
stave
passages
vertical
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Expired - Lifetime
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US425853A
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English (en)
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Jan Hendrik Brandenburg
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/10—Cooling; Devices therefor

Definitions

  • ABSTRACT Stave-cooler for a lined shaft furnace, having a projection on its face which is inwardly directed in use for supporting the furnace lining, a plurality of passages for cooling fluid extending through the cooler in directions having at least a vertical (in use) component, at least some of the said passages extending for at least a substantial part of the vertical extent of the projection through that portion of the cooler which lies outwardly (in use) of the projection and a further fluid passage extending through the projection which has an inlet and an outlet in the outwardly directed (in use) face of the cooler and lies in a substantially horizontal plane.
  • the invention relates to a stave-cooler for a shaft furnace and also to a shaft furnace having one or more such coolers.
  • the invention will hereafter mainly be described in connection with its application to a blast furnace, but it is not restricted thereto and may be applied to other types of shaft furnaces which require cooling of the shaft.
  • cooling panels having provision for cooling liquid circulation are attached to the inside of the steel mantle of the furnace.
  • These cooling panels referred to in English as stavecoolers, and in German literature referred to as Plattenkuhler, mainly consist of cast iron slabs, which, closely connected one to the other, are attached to the mantle.
  • Plattenkuhler mainly consist of cast iron slabs, which, closely connected one to the other, are attached to the mantle.
  • Circulation passages are provided in the stave coolers, usually in the form of cast-in tubes, which are interconnected at the outside of the furnace to form an integrated system of passages. Through this system a cooling liquid, a cooling gas, or a mixture of cooling liquid and vapour can be circulated.
  • a separate problem caused by the application of this construction to a blast furnace lies in achieving adequate stability of the refractory lining adjacent the stave-coolers where the shaft narrows upwardly. This is because the lining in this region has no tendency to lean against the wall of the furnace because of its own weight and the weight of the load in the furnace, and special means are necessary to guarantee its stability, in order to prevent the refractory lining being insufficiently cooled, and consequently collapsing. Therefore in many cases the stave-coolers are provided with supporting cams, noses or other projections which extend into the furnace and serve to support the lining.
  • the present invention is concerned with the problem of avoiding or mitigating the dangers referred to above and with achieving better cooling of the supporting projection.
  • a stavecooler for a lined shaft furnace having a projection on its face which is inwardly directed in use for supporting the furnace lining, and a plurality of passages for cooling fluid extending through the cooler in directions having at least a vertical (in use) component, at least some of the said passages extending for at least a substantial part of the vertical extent of the projection through that portion of the cooler which lies outwardly (in use) of the projection.
  • the stave-cooler has at least two passages that extend in its longitudinal direction and extend behind the projection over a substantial part, e.g., at least half, of the dimension of the projection in that longitudinal direction.
  • the stave-cooler has a further passage for cooling fluid extending through the projection, and this passage may lie in a horizontal plane including its inlet and outlet portions.
  • inlet or outlet portions of the passages extending with a vertical component may be in the said horizontal plane, but it is preferred that they are adjacent the plane and both above and below it.
  • the p ro' jection is at the extreme upper end of the stave-cooler and the passages have their inlets or outlets in the outwardly directed face of the stave cooler. It is possible, when applying the present invention, to ignore the opinion that the projection should be at the extreme upper end of the stave-cooler, and to have it spaced from the upper end, preferably by at least the thickness of the cooler, whereby the passages in the cooler may extend in the cooler behind the projection over the full vertical extent of the projection.
  • passages for cooling fluid are in the form of tubes, which may be cast in the stave-cooler.
  • the projection When the projection is damaged because of superheating it should at any rate be prevented that the stave-cooler itself behind the projection is also damaged. Under very critical thermal load situations it may therefore even be advisable to connect the projection to the stave cooler as a separate, detachable and interchangeable element capable of being secured to the remainder of the cooler. In that case possibly a layer of insulating material can be provided between the projection and the stave cooler itself, reducing the thermal contact between the projection and the stave cooler almost entirely, whereby these two elements are cooled independently. Generally, however, the construction in which the projection and the stave cooler form one single casting will be preferred.
  • the passage or passages through the projection is or are part of the circulation system for the vertically extending passages.
  • the passages through them may be advisable to connect the passages through them to form a separate circulation system.
  • the diameter of the passages through the stave-cooler determines the thickness of the stave-cooler, and if the stave-cooler should not be too thick, there is a restriction on the diameter of the passages. This however, does not apply to the projections which means that the passage that extends through the projection may well be larger. Where the stave-cooler is designed in this manner, it is preferable that the passage through the projections of all the stave-coolers in a furnace are connected to a separate circulation system for the passages extending with vertical components through the stavecoolers.
  • each of the passages extends in a flat plane, and in which the inlet and outlet of the passage through the projection extends alongside the inlets or outlets of the vertically extending passages. These inlets or outlets which extend alongside each other then can be conducted through one single opening in the mantle.
  • FIG. 1 schematically shows the connection of stavecoolers to the wall of a shaft furnace
  • FIGS. 2, 4, 6 and 9 show in front-view upper parts re spectively of four stave-coolers embodying the invention
  • FIGS. 3, 5, and 7 are respectively side-views of the stave-coolers of FIGS. 2, 4, and 6;
  • FIG. 8 is a cross-sectional view on the line VIIIVIII of FIG. 6;
  • FIG. 10 is a vertical section through the stave-cooler of FIG. 9.
  • FIG. 1 two stavecoolers 2 and 3 are connected to a steel mantle 1 of a blast furnace by means of bolt connections 4, 5, 6.
  • a lining 7 of the furnace has been shown schematically against the stave-coolers.
  • tubes (not shown) extend, of which the ends 8, 9, 10 traverse the mantle, these ends from the several stave-coolers being mutually interconnected.
  • the projection is a nose or cam projecting from the inner face of the stavecooler and extending the full width of the face.
  • tubes 12, 13, 14, 15 for cooling fluid extend through the stave-cooler in the longitudinal direction i.e., vertically in use, and have inlets and outlets 16, 17, 18, 19 in the outer face of the cooler.
  • a tube 22 for cooling fluid extending in a transverse (horizontal) direction through the supporting projection 11, posesses an inlet and outlet 20, 21.
  • the tubes 12, 13, 14, 15 are in vertical planes, and the tube 22 in a horizontal plane.
  • outlets 17, 18, 20, 21 are situated in the same horizontal plane, which means that tubes 13, 14 extend in the stave-cooler behind the projection 11 over about half the vertical extent of the projection.
  • cooling tubes 24, 25 have exits 28, 29 situated above exits 31, 32 of a cooling tube 33 which extends through supporting cam 11.
  • Outlets 27 and 31, respectively 30 and 32 have been situated sufficiently close to each other that the pairs of tube-ends can traverse the mantle 1 through one single opening. In this way a simpler pattern of openings through the mantle 1 is obtained, while also the supporting projection 11 is better cooled.
  • FIGS. 6, 7 and 8 another embodiment is shown in which the supporting projection 11 has been shifted downwardly with respect to the upper end of the stavecooler by a distance greater than the thickness of the stave-cooler from its inner face (away from the projection) to its outer face.
  • the vertical cooling tubes 34,35,36, 37 extend over the full vertical extend of the projection 11 up to their outlets 38, 39, 4t), 41 which are situated in one horizontal line.
  • a cooling tube 44 through the supporting projection 11 has a curved shape such that it extends over the entire width of the projection 11 and yet debouches in outlets 42, 43 in between the vertical tubes 34, 35, 36, 37.
  • FIGS. 9 and 10 show yet another stave-cooler embodying the invention which in general corresponds to that of FIGS. 6 to 8, the difference, however, being that the fixed supporting projection 1 1 has been replaced by a interchangeable supporting projection 56 which is shown mounted on the stave-cooler, and is supported by a rib 57.
  • the stave-cooler 3 and the projection 56 are obtained, which may be of importance in case the projection 56 burns off. The possibility even has now been provided of, after the furnace has been so-called deep blown replacing the defective supporting projection by a new one.
  • Insulation provided between the projection and the portion of the stave cooler behind it may minimize heating of the projection by the cooler in cases where the projection is more strongly cooled by its own cooling system than the remainder of the cooler, and on the other hand may minimize heating of the cooler behind the projection if the projection is damaged so that its own cooling system fails.
  • Stave-cooler according to claim 1 wherein the said )assages each extend in a vertical plane from an inlet toan outlet, both of which. are in the outwardly directed (in use) face of the cooler.
  • Stave-cooler according to claim 1 wherein the said passages extending with at least a vertical component have inlets or outlets adjacent the said horizontal plane and both above and below it.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
US425853A 1972-12-19 1973-12-18 Cooled shaft-furnace and stave-cooler to be used therefor Expired - Lifetime US3881860A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7217255A NL7217255A (xx) 1972-12-19 1972-12-19

Publications (1)

Publication Number Publication Date
US3881860A true US3881860A (en) 1975-05-06

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ID=19817583

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US425853A Expired - Lifetime US3881860A (en) 1972-12-19 1973-12-18 Cooled shaft-furnace and stave-cooler to be used therefor

Country Status (7)

Country Link
US (1) US3881860A (xx)
JP (1) JPS5121925B2 (xx)
AT (1) AT336157B (xx)
BE (1) BE808712A (xx)
DE (1) DE2362974A1 (xx)
IT (1) IT1000546B (xx)
NL (1) NL7217255A (xx)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071230A (en) * 1977-03-23 1978-01-31 Anatoly Vasilievich Zherdev Contrivance for the protection of the walls of a shaft furnace from the heat effect of metallurgical process
EP0029081A1 (de) * 1979-10-02 1981-05-27 Hoesch Aktiengesellschaft Kühlelement für einen metallurgischen Ofen
US5676908A (en) * 1995-02-07 1997-10-14 Man Gutenoffungshutte Aktiengesellschaft Plate for cooling shaft furnaces
CN1080314C (zh) * 1997-11-20 2002-03-06 Sms舒路曼-斯玛公司 立式炉的冷却元件
WO2004111275A1 (en) * 2003-06-12 2004-12-23 Outokumpu Copper Products Oy Cooling element and method of manufacturing a cooling element
US20130206358A1 (en) * 2010-08-06 2013-08-15 Tenova S.P.A. Panel cooled with a fluid for metallurgic furnaces, a cooling system for metallurgic furnaces comprising such a panel and metallurgic furnace incorporating them
WO2015097073A1 (en) 2013-12-27 2015-07-02 Paul Wurth S.A. Stave cooler for a metallurgical furnace and method for protecting a stave cooler

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410717B (de) * 2001-10-17 2003-07-25 Voest Alpine Ind Anlagen Kühlplatte mit verstärkungsteil

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379427A (en) * 1965-02-03 1968-04-23 Kuznetsky Metall Kom Lining of the internal surface of a blast furnace
US3692103A (en) * 1970-11-03 1972-09-19 Vsesoyuzny Nauchono I I Pi Och Device for evaporative cooling of metallurgical furnaces
US3794307A (en) * 1970-07-04 1974-02-26 Ishikawajima Harima Heavy Ind Blast furnace cooling system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4966901U (xx) * 1972-09-28 1974-06-11

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379427A (en) * 1965-02-03 1968-04-23 Kuznetsky Metall Kom Lining of the internal surface of a blast furnace
US3794307A (en) * 1970-07-04 1974-02-26 Ishikawajima Harima Heavy Ind Blast furnace cooling system
US3692103A (en) * 1970-11-03 1972-09-19 Vsesoyuzny Nauchono I I Pi Och Device for evaporative cooling of metallurgical furnaces

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071230A (en) * 1977-03-23 1978-01-31 Anatoly Vasilievich Zherdev Contrivance for the protection of the walls of a shaft furnace from the heat effect of metallurgical process
EP0029081A1 (de) * 1979-10-02 1981-05-27 Hoesch Aktiengesellschaft Kühlelement für einen metallurgischen Ofen
US5676908A (en) * 1995-02-07 1997-10-14 Man Gutenoffungshutte Aktiengesellschaft Plate for cooling shaft furnaces
AU713079B2 (en) * 1995-02-07 1999-11-25 Sms Schloemann-Siemag Aktiengesellschaft Cooling plate for use in shaft furnaces
CN1051577C (zh) * 1995-02-07 2000-04-19 Sms舒路曼-斯玛公司 用于竖炉的冷却板
CN1080314C (zh) * 1997-11-20 2002-03-06 Sms舒路曼-斯玛公司 立式炉的冷却元件
WO2004111275A1 (en) * 2003-06-12 2004-12-23 Outokumpu Copper Products Oy Cooling element and method of manufacturing a cooling element
CN100357455C (zh) * 2003-06-12 2007-12-26 卢瓦塔公司 冷却件以及制造冷却件的方法
US20130206358A1 (en) * 2010-08-06 2013-08-15 Tenova S.P.A. Panel cooled with a fluid for metallurgic furnaces, a cooling system for metallurgic furnaces comprising such a panel and metallurgic furnace incorporating them
US9518781B2 (en) * 2010-08-06 2016-12-13 Tenova S.P.A. Panel cooled with a fluid for metallurgic furnaces, a cooling system for metallurgic furnaces comprising such a panel and metallurgic furnace incorporating them
WO2015097073A1 (en) 2013-12-27 2015-07-02 Paul Wurth S.A. Stave cooler for a metallurgical furnace and method for protecting a stave cooler
KR20160079913A (ko) 2013-12-27 2016-07-06 풀 부르스 에스.에이. 야금로용 스테이브 쿨러 및 스테이브 쿨러의 보호 방법
US9683783B2 (en) 2013-12-27 2017-06-20 Paul Wurth S.A. Stave cooler for a metallurgical furnace and method for protecting a stave cooler

Also Published As

Publication number Publication date
IT1000546B (it) 1976-04-10
JPS5121925B2 (xx) 1976-07-06
ATA1059973A (de) 1976-08-15
BE808712A (nl) 1974-06-17
JPS4990605A (xx) 1974-08-29
DE2362974A1 (de) 1974-07-04
AT336157B (de) 1977-04-25
NL7217255A (xx) 1974-06-21

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