ES435063A1 - Refractory compositions - Google Patents

Refractory compositions

Info

Publication number
ES435063A1
ES435063A1 ES435063A ES435063A ES435063A1 ES 435063 A1 ES435063 A1 ES 435063A1 ES 435063 A ES435063 A ES 435063A ES 435063 A ES435063 A ES 435063A ES 435063 A1 ES435063 A1 ES 435063A1
Authority
ES
Spain
Prior art keywords
weight
magnesia
cao
calcined
less
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
ES435063A
Other languages
Spanish (es)
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.)
Veitscher Magnesitwerke AG
Original Assignee
Veitscher Magnesitwerke AG
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 Veitscher Magnesitwerke AG filed Critical Veitscher Magnesitwerke AG
Publication of ES435063A1 publication Critical patent/ES435063A1/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
    • C04B35/0435—Refractories from grain sized mixtures containing refractory metal compounds other than chromium oxide or chrome ore
    • 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
    • C04B35/047—Refractories from grain sized mixtures containing chromium oxide or chrome ore
    • 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
    • C04B35/047—Refractories from grain sized mixtures containing chromium oxide or chrome ore
    • C04B35/0476—Refractories from grain sized mixtures containing chromium oxide or chrome ore obtained from prereacted sintered grains ("simultaneous sinter")

Landscapes

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

Abstract

Process for the manufacture of calcined or non-calcined refractory bricks or of refractory masses, based on magnesia, adding to a magnesia component zirconium dioxide or a zirconium compound that when calcined supplies at least 90% by weight of ZrO2, and The obtained magnesia material is subsequently transformed, optionally after adding a quantity of chromium ore or sintered magnesia and chromium of up to 50% by weight of the total mixture, into fired bricks, eventually impregnated with a high carbon carrier carbon content, or in uncooked bricks chemically bonded or with tar or fish, or also in refractory masses, characterized in that the magnesia component is used with contents not higher than 0.7% by weight of SiO2, maximum 6% by weight, preferably not more than 4% by weight of CaO, not less than 3% by weight of R2O3 and not less than 2% by weight of Fe2O3, in all cases referring to a quantity of the magnesia component, and with a weight ratio of lime-silicic acid of not less than 1.87, and because zirconium dioxide or the other zirconium compound is added in at least such an amount that up to combine in the form of calcium zirconate the amount of CaO necessary per se for the formation of dicalcium ferrite corresponding to the content of R2O3 and other CaO-R2-O3 compounds, as well as in any case a free amount of CaO . (Machine-translation by Google Translate, not legally binding)
ES435063A 1974-02-26 1975-02-25 Refractory compositions Expired ES435063A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT157274A AT347843B (en) 1974-02-26 1974-02-26 PROCESS FOR THE MANUFACTURING OF REFRACTORY BURNED OR UNBURNTED STONES AND OF REFRACTORY BULK BASED ON MAGNESIA

Publications (1)

Publication Number Publication Date
ES435063A1 true ES435063A1 (en) 1976-12-16

Family

ID=3516312

Family Applications (1)

Application Number Title Priority Date Filing Date
ES435063A Expired ES435063A1 (en) 1974-02-26 1975-02-25 Refractory compositions

Country Status (7)

Country Link
AT (1) AT347843B (en)
DE (1) DE2507556C2 (en)
ES (1) ES435063A1 (en)
FR (1) FR2262000B1 (en)
GB (1) GB1501460A (en)
IT (1) IT1030212B (en)
SE (1) SE397822B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT349966B (en) * 1975-10-20 1979-05-10 Veitscher Magnesitwerke Ag METHOD FOR MANUFACTURING FIRED REFRACTORY MAGNESIA BRICKS
FR2423476A1 (en) * 1978-04-06 1979-11-16 Oreal NEW 2,4-DIHYDROXY DIPHENYLAMINES AND TINCTORIAL COMPOSITIONS FOR HAIR CONTAINING THEM
AU570018B2 (en) * 1982-12-06 1988-03-03 Chloride Silent Power Ltd. Sodium beta alumina electrolyte element
CH669146A5 (en) * 1986-03-14 1989-02-28 Netstal Ag Maschf Giesserei PLASTIC INJECTION MOLDING MACHINE.
DE3617904A1 (en) * 1986-05-28 1987-12-03 Refratechnik Gmbh Spinel-forming composition and the use thereof in refractory magnesia bricks
GB8625656D0 (en) * 1986-10-27 1986-11-26 British Nuclear Fuels Plc Inorganic ion exchange material
DE4402926C1 (en) * 1994-02-01 1995-04-20 Veitsch Radex Ag Sintered magnesia, process and apparatus for producing sintered magnesia and its use
CN111943718A (en) * 2020-08-25 2020-11-17 洛阳科创新材料股份有限公司 Porous ceramic part for metal liquid purifier and preparation method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1413985A (en) * 1972-02-11 1975-11-12 Steetley Mfg Ltd Refractory magnesia
AT315058B (en) * 1972-05-23 1974-05-10 Veitscher Magnesitwerke Ag Fired refractory stone

Also Published As

Publication number Publication date
SE397822B (en) 1977-11-21
DE2507556A1 (en) 1975-08-28
DE2507556C2 (en) 1982-08-12
ATA157274A (en) 1978-05-15
AT347843B (en) 1979-01-10
FR2262000A1 (en) 1975-09-19
GB1501460A (en) 1978-02-15
IT1030212B (en) 1979-03-30
SE7502071L (en) 1975-08-27
FR2262000B1 (en) 1982-04-23

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