US3295845A - Basic oxygen steelmaking vessels - Google Patents

Basic oxygen steelmaking vessels Download PDF

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Publication number
US3295845A
US3295845A US488386A US48838665A US3295845A US 3295845 A US3295845 A US 3295845A US 488386 A US488386 A US 488386A US 48838665 A US48838665 A US 48838665A US 3295845 A US3295845 A US 3295845A
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US
United States
Prior art keywords
taphole
brick
basic oxygen
face
assembly
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 - Lifetime
Application number
US488386A
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English (en)
Inventor
Alfred E Finn
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.)
Harbison Walker Refractories Co
Original Assignee
Harbison Walker Refractories Co
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 Harbison Walker Refractories Co filed Critical Harbison Walker Refractories Co
Priority to US488386A priority Critical patent/US3295845A/en
Priority to DE19661508191 priority patent/DE1508191B1/de
Priority to ES0331048A priority patent/ES331048A1/es
Priority to GB41487/66A priority patent/GB1113598A/en
Priority to NL6613233A priority patent/NL6613233A/xx
Application granted granted Critical
Publication of US3295845A publication Critical patent/US3295845A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/44—Refractory linings
    • C21C5/445—Lining or repairing the taphole

Definitions

  • the present invention relates to basic oxygen steelmaking vessels and more particularly, to prefabricated, highly refractory tapholes for such vessels.
  • vibration casting mixes typically contain between'7 and 8% of Water, and the water must be removed during burnin. This requires higher temperatures and a relatively long burn-in schedule which extends the down-time of the vessel. It is important that the refractory employed for the taphole and the technique used to install it be compatible with the burn-in schedule of the refractory lining of the basic oxygen furnace since it comprises the bulk of the furnace.
  • Another object of the invention is to provide a prefabricated, highly refractory taphole in a basic oxygen furnace which is compatible with the bumin schedule of the refractory lining in the remainder of the furnace.
  • FIG. 1 is a perspective view, partly broken away, of a basic oxygen furnace, particularly showing the taphole side of the furnace;
  • FIG. 2 is a perspective view of a prefabricated taphole for use in basic oxygen furnaces, according to the present invention.
  • FIG. 3 is an elevation view of shapes used in fabricating tapholes.
  • the assembly is composed of a plurality of mated pairs of refractory brick shapes.
  • the individual brick and each pair have generally face, side, and end surfaces.
  • Each brick contains a groove in a face surface thereof which intersects at least two of the other surfaces.
  • Each pair of brick defines a portion of an inclined taphole.
  • the pairs are arranged one over'the other to provide a continuous inclined taphole extending through the brick assembly.
  • a basic oxygen furnace 10 consisting of an outer metal shell 12, a shell protective brick lining 14in contact with'the inside surface of the shell and a brick working lining 16.
  • the vessel is constructed of three major'zones, the bottom zone 18, the barrel zone 20, and the cone section 22.
  • the bottom zone is dish shaped and of upwardly opening concave configuration.
  • the brick 23 in the bottom zone terminate at the'barrel zone 20' with their face surfaces inclined from the bottom upwardly to the cone section zone.
  • the working lining brick 14 in both the barrel and the cone section zones are disposed so that their face surfaces are in the horizontal plane.
  • the cone section zone, having a taphole area 26, extends upwardly and terminates in theform of a mouth 28 at the top of the vessel.
  • the cone section zone is of downwardly opening truncated cross-sectional configuration.
  • the taphole assembly 30 Disposed in the taphole area of the vessel is a taphole assembly 30 according to the present invention (best shown in FIG. 2).
  • the taphole assembly 30 is composed of two mated pairs 32 and 34 of refractory brickshapes.
  • the individual brick in each pair contain generally face, side and end surfaces.
  • FIG. 3 there is shown the righthand sided brick 32b and 34b-of the taphole assembly shown in FIG. 2.
  • the brick 32b contains a groove 36 in the face surface 38 thereof.
  • the groove intersects the end surface 40 and the side surface 42.
  • the brick'34b contains a groove 44 that intersects the end surface 46 and the side surface 48.
  • the angle of the groove formed through both brick is dependent on the inclination of the taphole opening.
  • the grooves could intersect three surfaces of each of the brick 32b and 34b.
  • the end surfaces 42, 43, 45 and 46, are unidirectionally inclined to the side surfaces of the respective brick 32b and 34b to conform in contour to the truncated cone section zone.
  • Each of the brick could be of a true parallelogram cross-sectional configuration depending upon the bias of the cone section zone.
  • each mated pair 32 and 34 are of similar configuration. Actually, when placed together as shown in FIG. 2 the pairs of brick are mirror images of each other, so that each pair of brick define a portion of the inclined taphole. The pairs 32 and 34 are arranged one over the other to provide a continuous inclined taphole extending through the taphole assembly.
  • FIG. 2 shows that there are two pair of refractory brick stacked one on top of the other, other pairs could conceivably be stacked on top of the pairs shown, if the inclination of the taphole is somewhat greater than that shown in FIG. 1.
  • the taphole assembly of the present invention can be placed in the basic oxygen vessel shown in FIG. 1, readily and with a minimum of labor.
  • Each of the mating faces of the refractory brick 32a, 32b, 34a, and 34b may be clipped in a mortar slurry, if desired, before assembly thereof.
  • the taphole assembly is merely laid and mortared a minimum amount of rammed fill so that the continuous inclined taphole is in alignment with the taphole opening 50 through the furnace shell.
  • the cone section zone, in the taphole area is 'laid'in the normal manner.
  • the inclined end surfaces of the brick are contiguous with the shell protective lining.
  • the remainder of the taphole opening may 'be readily fabricated by inserting a pipe in alignment with the prefabricated inclined taphole and then filling around the pipe with a monolithic refractory material from exterior the furnace.
  • the taphole opening in the mated pairs 32 may be provided with a female socket which extends from the cold face thereof.
  • the extending socket is secured to one end of the pipe to insure continuous alignment and connection therewith.
  • the individual brick of the taphole assembly could be composed of highly refractory, dead burned magnesite processed to high densities as are the remainder of the brick lining the vessel; so that the bumin schedule of the taphole would be similar to the burnin schedule of the remainder of the lining and the problems heretofore encountered with differently fabricated tapholes would not occur.
  • the taphole construction of present invention be limited to magnesite shapes.
  • Other basic refractories conventionally used in the basic oxygen furnace are suitable.
  • a prefabricated taphole assembly opening into said taphole opening composed of a plurality of mated pairs of refractory brick having generally face, side and end surfaces, each brick in each of said pairs containing a groove in a face surface thereof, said groove extending entirely across the face surface in which it is formed and intersecting an adjacent side and end surface which side and end surface intersect to form a common edge, both brick in each pair being arranged so that the respective groove containing face surfaces are in contiguous contact with each other with said respective groove containing faces cooperating to define an open ended passage which forms a portion of an inclined taphole, a said pair of brick being arranged with its side surfaces in contiguous contact with an adjacent pair along a vertical axis of the vessel with respective open ended passages aligned to provide an open ended continuous inclined taphole, with respect to said vertical axis,
  • each of the brick shapes is a parallelogram in cross-section but having sloped ends and in which each brick shape of each mated pair is a mirror image of the other.
  • the vessel of claim 1 in which the metallurgical vessel is a basic oxygen converter of the type having a generally circular open topped barrel zone and a downwardly opening truncated cone section zone superposed there over and said taphole assembly opens into the cone section zone.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
US488386A 1965-09-20 1965-09-20 Basic oxygen steelmaking vessels Expired - Lifetime US3295845A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US488386A US3295845A (en) 1965-09-20 1965-09-20 Basic oxygen steelmaking vessels
DE19661508191 DE1508191B1 (de) 1965-09-20 1966-08-29 Stichlochblock fuer Sauerstoff-Aufblaskonverter
ES0331048A ES331048A1 (es) 1965-09-20 1966-09-09 Mejoras introducidas en vasijas metalurgicas del tipo que tienen una coraza metalica exterior.
GB41487/66A GB1113598A (en) 1965-09-20 1966-09-16 Metallurgical vessels
NL6613233A NL6613233A (de) 1965-09-20 1966-09-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US488386A US3295845A (en) 1965-09-20 1965-09-20 Basic oxygen steelmaking vessels

Publications (1)

Publication Number Publication Date
US3295845A true US3295845A (en) 1967-01-03

Family

ID=23939534

Family Applications (1)

Application Number Title Priority Date Filing Date
US488386A Expired - Lifetime US3295845A (en) 1965-09-20 1965-09-20 Basic oxygen steelmaking vessels

Country Status (5)

Country Link
US (1) US3295845A (de)
DE (1) DE1508191B1 (de)
ES (1) ES331048A1 (de)
GB (1) GB1113598A (de)
NL (1) NL6613233A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3554523A (en) * 1969-01-09 1971-01-12 Edwin B Miller Taphole assembly for metallurgical furnaces
US3636872A (en) * 1970-01-29 1972-01-25 Int Minerals & Chem Corp Radial interlocking refractory tuyere block
US4155703A (en) * 1976-02-25 1979-05-22 Eisenwerk-Gesellschaft Maximillianshutte mbH. Lining truncated cone walls by means of refractory bricks
US4192492A (en) * 1979-03-23 1980-03-11 Dresser Industries, Inc. Device for fabrication of tapholes in metallurgical vessels
US4328956A (en) * 1980-12-24 1982-05-11 Kaiser Aluminum & Chemical Corporation Taphole assembly and method of installation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3663148D1 (en) * 1986-06-18 1989-06-08 Radex West Ges Mit Beschrankte Fireproof tap hole
DE3843545A1 (de) * 1988-12-23 1990-06-28 Didier Werke Ag Abstichkanal fuer metallurgische gefaesse

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US393136A (en) * 1888-11-20 young
US806621A (en) * 1905-05-01 1905-12-05 Ralph Baggaley Copper-refining furnace.
US2125193A (en) * 1937-12-24 1938-07-26 Harry A Morlock Construction for furnaces
US3084924A (en) * 1960-06-30 1963-04-09 Gen Refractories Co Comolded magnesite-chromite tuyere
US3148238A (en) * 1961-08-21 1964-09-08 Harbison Walker Refractories Oxygen converter linings
US3153110A (en) * 1961-04-21 1964-10-13 Davy & United Eng Co Ltd Containers for molten metal
US3227434A (en) * 1962-04-10 1966-01-04 Koninklijke Hoogovens En Staal Converter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1293824A (fr) * 1961-06-24 1962-05-18 Voest Ag Creuset pour la mise en oeuvre de procédés métallurgiques
FR1320412A (fr) * 1962-04-18 1963-03-08 Davy & United Eng Co Ltd Récipient pour métal fondu
FR1333248A (fr) * 1962-06-25 1963-07-26 Harbison Walker Refractories Revêtement de travail pour convertisseurs ou fours à oxygène d'élaboration de l'acier

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US393136A (en) * 1888-11-20 young
US806621A (en) * 1905-05-01 1905-12-05 Ralph Baggaley Copper-refining furnace.
US2125193A (en) * 1937-12-24 1938-07-26 Harry A Morlock Construction for furnaces
US3084924A (en) * 1960-06-30 1963-04-09 Gen Refractories Co Comolded magnesite-chromite tuyere
US3153110A (en) * 1961-04-21 1964-10-13 Davy & United Eng Co Ltd Containers for molten metal
US3148238A (en) * 1961-08-21 1964-09-08 Harbison Walker Refractories Oxygen converter linings
US3227434A (en) * 1962-04-10 1966-01-04 Koninklijke Hoogovens En Staal Converter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3554523A (en) * 1969-01-09 1971-01-12 Edwin B Miller Taphole assembly for metallurgical furnaces
US3636872A (en) * 1970-01-29 1972-01-25 Int Minerals & Chem Corp Radial interlocking refractory tuyere block
US4155703A (en) * 1976-02-25 1979-05-22 Eisenwerk-Gesellschaft Maximillianshutte mbH. Lining truncated cone walls by means of refractory bricks
US4192492A (en) * 1979-03-23 1980-03-11 Dresser Industries, Inc. Device for fabrication of tapholes in metallurgical vessels
US4328956A (en) * 1980-12-24 1982-05-11 Kaiser Aluminum & Chemical Corporation Taphole assembly and method of installation

Also Published As

Publication number Publication date
GB1113598A (en) 1968-05-15
NL6613233A (de) 1967-03-21
ES331048A1 (es) 1967-11-01
DE1508191B1 (de) 1970-05-21

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