EP0008314B1 - Cooled components for furnaces - Google Patents

Cooled components for furnaces Download PDF

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Publication number
EP0008314B1
EP0008314B1 EP19780900318 EP78900318A EP0008314B1 EP 0008314 B1 EP0008314 B1 EP 0008314B1 EP 19780900318 EP19780900318 EP 19780900318 EP 78900318 A EP78900318 A EP 78900318A EP 0008314 B1 EP0008314 B1 EP 0008314B1
Authority
EP
European Patent Office
Prior art keywords
component
metal
nose
copper
furnaces
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.)
Expired
Application number
EP19780900318
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0008314A1 (en
Inventor
Colin Frederick Widmer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
James Brown and Sons Ltd
Original Assignee
James Brown and Sons Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by James Brown and Sons Ltd filed Critical James Brown and Sons Ltd
Publication of EP0008314A1 publication Critical patent/EP0008314A1/en
Application granted granted Critical
Publication of EP0008314B1 publication Critical patent/EP0008314B1/en
Expired legal-status Critical Current

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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
    • C21B7/16—Tuyéres

Definitions

  • This invention relates to cooled components used in furnaces, particularly blast furnaces.
  • coolers such as stack and bosh coolers, which are built into the refractory lining of the furnace, and tuyeres. These components are normally castings of copper or copper alloy.
  • the object of the present invention is to improve the resistance to abrasion during use of cooled components for furnaces.
  • a mesh element or an expanded metal element with greater abrasion resistance than the metal used for the main body of the component is introduced into the cast matel at the nose of the component.
  • Such protective element provides a continuous network of abrasion resistant material.
  • the material that may be used for the protective element include stainless steel meshes of varying thicknesses, and various compressed refractories capable of withstanding the thermal shock in a matrix of copper.
  • the materials concerned are introduced into the casting by locating them in position in the mould before casting is commenced.
  • a particularly suitable element is expanded metal from stainless steel or heat resistant steel.
  • An expanded metal element has a certain amount of depth as well as length and breadth and the spaces between the steel strips can be varied to give the desired gap, filled with the cast copper or other material, thus providing the desired good heat conduction from the exterior of the element to the cooling medium.
  • Fig. 1 of the drawings shows part of an expanded stainless steel element, generally designated by the reference numeral 10. This has been made in the usual way by cutting and expanding a sheet of stainless steel to give a lattice of strips 12 adjoined by flat nodes 14 which, as they are twisted out of the plane of the paper as seen in Fig. 1, give some depth to the structure as well as length and breadth. Spaces 16 between the strips 12 and nodes 14 will be filled by the cast metal in the finished article and will allow good conduction of heat to the surface of the cast component.
  • the expanded sheet 10 can be cut to size and bent round very easily to form a curved or cylindrical shape.
  • Suitable gauge for the stainless steel sheet from which the element 10 is made is 20 gauge (0.91 mm), and the stainless steel may be, for example, according to BS1449 EN58B.
  • Figs. 2 and 3 show, on a smaller scale than that used in Fig. 1, a cooler, such as a bosh cooler, for a blast furnace.
  • the cooler shown has a main cooling compartment 18 with inlet and outlet apertures 20 and 22, the nose end 24 of the cooler being cooled by means of a cast-in water pipe 26 having separate inlet and outlet 28 and 30.
  • the characterising feature of the cooler is the expanded stainless steel element 10 which is included in the casting by locating it in position in the casting mould and casting the copper of the cooler round it. As shown in Fig. 2 it extends at length across the whole width of the nose of the cooler just underneath the surface and has been bent to go round the cast-in pipe 26 as shown in Fig. 3.
  • Fig. 4 shows a tuyere of the sort having a main cooling chamber 30 surrounding an air- passage 32.
  • the cooling chamber 30 has inlet and outlet apertures 46.
  • the nose 34 of the tuyere is cooled by a separate cooling pipe 36 having an inlet pipe 38 leading thereto and a similar outlet pipe not seen in the section of Fig. 4.
  • the nose is reinforced with two rings of expanded metal, an inner ring 40 which is inside the nose cooling pipe 36 and an outer ring 42 which surrounds the said pipe. Additionally hard metal particles 44 are embedded in the copper of the tuyere forwardly of the cooling pipe 36.
  • cooler or tuyere any constructional form of cooler or tuyere can be used, the essential feature according to the invention being the provision of the abrasion resistant mesh element or expanded metal element at the nose of the device.

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)
  • Blast Furnaces (AREA)
EP19780900318 1977-12-23 1979-07-16 Cooled components for furnaces Expired EP0008314B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5381777 1977-12-23
GB5381777 1977-12-23

Publications (2)

Publication Number Publication Date
EP0008314A1 EP0008314A1 (en) 1980-03-05
EP0008314B1 true EP0008314B1 (en) 1982-05-12

Family

ID=10469077

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19780900318 Expired EP0008314B1 (en) 1977-12-23 1979-07-16 Cooled components for furnaces

Country Status (4)

Country Link
EP (1) EP0008314B1 (enrdf_load_html_response)
JP (1) JPS54500047A (enrdf_load_html_response)
DE (1) DE2861834D1 (enrdf_load_html_response)
WO (1) WO1979000431A1 (enrdf_load_html_response)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2903104C2 (de) * 1979-01-27 1982-10-07 Estel Hoesch Werke Ag, 4600 Dortmund Kühlelement für einen metallurgischen Ofen, insbesondere Hochofen, und Verfahren zu seiner Herstellung
AU5340090A (en) * 1989-03-28 1990-10-22 Peel Jones Copper Products Limited Consumable furnace components
EP1443119A1 (en) * 2003-01-29 2004-08-04 VAI Industries (UK) Ltd. Cooling stave for shaft furnaces
ES2969726T3 (es) * 2016-02-18 2024-05-22 Hatch Ltd Material compuesto resistente al desgaste y método de fabricación de un elemento refrigerante

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE148071C (enrdf_load_html_response) *
US1673053A (en) * 1926-02-24 1928-06-12 Ohba Shintaro Tuyere for blast furnaces
DE2601727A1 (de) * 1976-01-19 1977-07-21 Guenter Bender Schutzueberzug fuer extrem waermebeanspruchte werkstueckflaechen

Also Published As

Publication number Publication date
JPS54500047A (enrdf_load_html_response) 1979-11-01
DE2861834D1 (en) 1982-07-01
WO1979000431A1 (en) 1979-07-12
EP0008314A1 (en) 1980-03-05

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