GB2019988A - Protecting refractory walls - Google Patents

Protecting refractory walls

Info

Publication number
GB2019988A
GB2019988A GB7908338A GB7908338A GB2019988A GB 2019988 A GB2019988 A GB 2019988A GB 7908338 A GB7908338 A GB 7908338A GB 7908338 A GB7908338 A GB 7908338A GB 2019988 A GB2019988 A GB 2019988A
Authority
GB
United Kingdom
Prior art keywords
refractory walls
powder
protecting refractory
refractory
sprayed
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.)
Granted
Application number
GB7908338A
Other versions
GB2019988B (en
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.)
Cockerill SA
Original Assignee
Cockerill SA
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
Priority claimed from BE6046380A external-priority patent/BE864723A/en
Priority claimed from BE6046379A external-priority patent/BE864722A/en
Priority claimed from BE6046714A external-priority patent/BE872984A/en
Application filed by Cockerill SA filed Critical Cockerill SA
Publication of GB2019988A publication Critical patent/GB2019988A/en
Application granted granted Critical
Publication of GB2019988B publication Critical patent/GB2019988B/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/6303—Inorganic additives
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • C04B35/65—Reaction sintering of free metal- or free silicon-containing compositions
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • 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
    • C21C5/441—Equipment used for making or repairing linings
    • C21C5/443—Hot fettling; Flame gunning
    • 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
    • F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
    • F27D1/1636—Repairing linings by projecting or spraying refractory materials on the lining
    • F27D1/1642—Repairing linings by projecting or spraying refractory materials on the lining using a gunning apparatus
    • F27D1/1647—Repairing linings by projecting or spraying refractory materials on the lining using a gunning apparatus the projected materials being partly melted, e.g. by exothermic reactions of metals (Al, Si) with oxygen
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034—Physico-chemical characteristics of the mixtures
    • C04B2111/00146—Sprayable or pumpable mixtures
    • C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0087—Uses not provided for elsewhere in C04B2111/00 for metallurgical applications
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00939—Uses not provided for elsewhere in C04B2111/00 for the fabrication of moulds or cores
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
    • C04B2235/9676—Resistance against chemicals, e.g. against molten glass or molten salts against molten metals such as steel or aluminium
    • 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
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B2014/085—Preheating of the charge
    • F27B2014/0856—Preheating of the crucible
    • 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
    • F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
    • F27D1/1636—Repairing linings by projecting or spraying refractory materials on the lining
    • F27D1/1642—Repairing linings by projecting or spraying refractory materials on the lining using a gunning apparatus
    • F27D1/1647—Repairing linings by projecting or spraying refractory materials on the lining using a gunning apparatus the projected materials being partly melted, e.g. by exothermic reactions of metals (Al, Si) with oxygen
    • F27D1/1652—Flame guniting; Use of a fuel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

A refractory powder is sprayed by means of a lance onto a region of a refractory wall. The powder contains at least one refractory oxide and is at an elevated temperature which is not less than that of the region being sprayed. The powder may contain a metal e.g. aluminium or magnesium.
GB7908338A 1978-03-09 1979-03-09 Protecting refractory walls Expired GB2019988B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BE6046380A BE864723A (en) 1978-03-09 1978-03-09 REFRACTORY PRODUCT INTENDED IN PARTICULAR FOR RECHARGING COATINGS OF METALLURGIC CONTAINERS
BE6046379A BE864722A (en) 1978-03-09 1978-03-09 PROCESS FOR THE PROTECTION OF REFRACTORY WALLS OF METALLURGIC CONTAINERS
BE6046714A BE872984A (en) 1978-12-21 1978-12-21 IMPROVEMENTS IN PROCESSES FOR PROTECTING THE WALLS OF METALLURGIC CONTAINERS, SUCH AS FOR EXAMPLE CASTING POCKETS

Publications (2)

Publication Number Publication Date
GB2019988A true GB2019988A (en) 1979-11-07
GB2019988B GB2019988B (en) 1982-08-18

Family

ID=27159686

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7908338A Expired GB2019988B (en) 1978-03-09 1979-03-09 Protecting refractory walls

Country Status (4)

Country Link
DE (1) DE2908853A1 (en)
FR (1) FR2419484A1 (en)
GB (1) GB2019988B (en)
LU (1) LU80997A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096985A1 (en) * 1982-06-28 1983-12-28 Trw Inc. Crucible liner and method of making and using the same

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2465787A1 (en) * 1979-09-21 1981-03-27 Do Nii Chernoj Metallurgii Flame sprayed coating of converter lining - esp. for rapid repair of hot lining directly after tapping, via nozzle pipe feeding streams on oxygen, fuel and refractory onto lining
FR2480421A1 (en) * 1980-04-09 1981-10-16 Do Nii Chernoj Metallurgii Torch gunning metallurgical furnace linings - by supplying jet of refractory material and annular jets of oxygen and fuel at specific rates
FR2533020A1 (en) * 1982-09-13 1984-03-16 Siderurgie Fse Inst Rech HOT TUNNEL NOZZLE
LU86431A1 (en) * 1986-05-16 1987-12-16 Glaverbel METHOD FOR FORMING A REFRACTORY MASS ON A SURFACE AND MIXING PARTICLES TO FORM SUCH A MASS
GB8729418D0 (en) * 1987-12-17 1988-02-03 Glaverbel Surface treatment of refractories

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1264260A (en) * 1960-07-26 1961-06-19 Konink Nederlansche Hoogovens Method for repairing the refractory lining of a furnace and furnace provided with a device for repairing its lining
FR1437713A (en) * 1965-03-31 1966-05-06 Union Carbide Corp Furnace coating process
GB1151423A (en) * 1965-06-23 1969-05-07 British Oxygen Co Ltd A Refractory Flame Spraying Process
FR1445859A (en) * 1965-08-10 1966-07-15 Union Carbide Corp Refractories and their manufacturing process
BE757466A (en) * 1969-11-04 1971-04-14 Glaverbel
US3883078A (en) * 1972-01-28 1975-05-13 Oleg Nikolaevich Chemeris Method and a device for gunniting converter linings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096985A1 (en) * 1982-06-28 1983-12-28 Trw Inc. Crucible liner and method of making and using the same

Also Published As

Publication number Publication date
FR2419484B1 (en) 1984-07-13
GB2019988B (en) 1982-08-18
LU80997A1 (en) 1979-06-18
DE2908853A1 (en) 1979-09-20
FR2419484A1 (en) 1979-10-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930309