[go: up one dir, main page]

GB1391909A - Refractory composition - Google Patents

Refractory composition

Info

Publication number
GB1391909A
GB1391909A GB3796071A GB3796071A GB1391909A GB 1391909 A GB1391909 A GB 1391909A GB 3796071 A GB3796071 A GB 3796071A GB 3796071 A GB3796071 A GB 3796071A GB 1391909 A GB1391909 A GB 1391909A
Authority
GB
United Kingdom
Prior art keywords
weight
silica
magnesia
lime
dead
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
GB3796071A
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.)
STEETLEY Manufacturing Ltd
Original Assignee
STEETLEY Manufacturing 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 STEETLEY Manufacturing Ltd filed Critical STEETLEY Manufacturing Ltd
Priority to GB3796071A priority Critical patent/GB1391909A/en
Priority to SE7210411A priority patent/SE385470B/en
Publication of GB1391909A publication Critical patent/GB1391909A/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
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
    • C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
    • C04B35/043—Refractories from grain sized mixtures
    • 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
    • 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; Breaking away linings
    • F27D1/1626—Making linings by compacting a refractory mass in the space defined by a backing mould or pattern and the furnace wall
    • 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
    • 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
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
    • 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
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • 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
    • 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
    • F27D1/0003—Linings or walls
    • F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

1391909 Refractory magnesia and compositions STEETLEY (MFG) Ltd 4 Aug 1972 37960/71 Heading C1A [Also in Division F4] A dead-burned magnesia contains from 0À1% to 2À0% by weight of silica (SiO 2 ), sufficient lime (CaO) to ensure that substantially all the silica is present as dicalcium silicate but at least 0À5% by weight of lime, up to 0À5% by weight of Al 2 O 3 , less than 1À8% by weight of Fe 2 O 3 and less than 0À06% by weight of B 2 O 3 , and has a particle size distribution such that from 50-70% bywt. passes through a 5 BSS mesh and is retained by a 72 BSS mesh and from 25-40% by wt. passes through a 72 BSS mesh, the remainder passing through a <SP>3</SP>/ 16 B22 mesh the said magnesia particles not being bonded together with a chemical bonding material. The amount by weight of lime necessary to ensure that silica in the product is present as dicalcium silicate is generally 1À87 times the weight of silica when the silica content is above 0À7% by weight, the ratio increasing to 3À2 : 1 at 0À3% silica and 6À5 : 1 at 0À1% silica. Preferably, the weight ratio of lime to silica (R) is related to the percentage by weight of silica (S) by the equation where K is from 1 to 2 and R > K. The minimum density of the dead-burned magnesia of usually 3À15 gm./cc. A refractory lining for a metallurgical furnace is produced by positioning on the inner surface of the furnace, and in the absence of a chemical bonding material, particles of the dead-burned magnesia above, and ramming the magnesia to form a rammed refractory lining for the furnace. Reference has been directed by the Comptroller to Specification 1,361,187.
GB3796071A 1971-08-12 1971-08-12 Refractory composition Expired GB1391909A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3796071A GB1391909A (en) 1971-08-12 1971-08-12 Refractory composition
SE7210411A SE385470B (en) 1971-08-12 1972-08-10 FEEDS FOR METALLURGIC OVENS MAINLY CONSISTING OF STAMPED, KILLED MAGNESIUM OXIDATE PARTICLES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3796071A GB1391909A (en) 1971-08-12 1971-08-12 Refractory composition

Publications (1)

Publication Number Publication Date
GB1391909A true GB1391909A (en) 1975-04-23

Family

ID=10400245

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3796071A Expired GB1391909A (en) 1971-08-12 1971-08-12 Refractory composition

Country Status (2)

Country Link
GB (1) GB1391909A (en)
SE (1) SE385470B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0599773A2 (en) * 1992-11-25 1994-06-01 Indresco Inc. MgO-C brick containing a novel graphite

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0599773A2 (en) * 1992-11-25 1994-06-01 Indresco Inc. MgO-C brick containing a novel graphite
EP0599773A3 (en) * 1992-11-25 1994-12-07 Indresco Inc MgO-C brick containing a novel graphite.

Also Published As

Publication number Publication date
SE385470B (en) 1976-07-05

Similar Documents

Publication Publication Date Title
GB1415431A (en) Monolithic refractory material
GB1123543A (en) Basic refractory compositions
ES408499A1 (en) Lime composition for basic oxygen steel-making process
GB1391909A (en) Refractory composition
GB1489600A (en) Smokeless exothermic hot topping compositions
GB976617A (en) Improvements in or relating to a composition suitable for lining casting moulds and hot tops
GB1528148A (en) Refractory dry tamping composition for lining of crucible induction furnaces
IE40377L (en) Refractory linings on hot metallurgical ladles.
GB1218859A (en) Improvements in or relating to refractory compositions
ES441371A1 (en) Desulfurizing and inoculating agent for molten iron
GB1058461A (en) Refractory and cupola operation
GB769719A (en) Improvements in or relating to exothermic mixtures
ES435606A1 (en) Development of hot strength in synthetic magnesia refractories having high b{11 o content
ES416151A1 (en) Refractory material
GB1232002A (en)
GB1418653A (en) Lining induction crucible furnaces
SE8006112L (en) THE IRON ORE PELLET CONTAINING MAGNESIUM OXIDE
GB1279628A (en) Improvements in or relating to refractory insulating materials suitable for use as feeder head linings
GB1327749A (en) Process of producing a sintered refractory material
JPS5458611A (en) Manufacture of sintered ore
GB1029802A (en) Tar-bonded refractory bricks, blocks and masses of burnt magnesia
GB1328057A (en) Lining materials for molten metal ladles
GB1445696A (en) Process of making burnt refractory bricks
GB1337278A (en) Refractory heat insulating materials
SE301930B (en)

Legal Events

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