GB1096408A - Magnesite-chrome refractories - Google Patents

Magnesite-chrome refractories

Info

Publication number
GB1096408A
GB1096408A GB3637465A GB3637465A GB1096408A GB 1096408 A GB1096408 A GB 1096408A GB 3637465 A GB3637465 A GB 3637465A GB 3637465 A GB3637465 A GB 3637465A GB 1096408 A GB1096408 A GB 1096408A
Authority
GB
United Kingdom
Prior art keywords
chrome ore
magnesite
dead
less
chrome
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
GB3637465A
Inventor
William Cecil Gilpin
Dennis Woodhouse
John Michael Davis
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.)
British Periclase Co Ltd
Original Assignee
British Periclase Co 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 British Periclase Co Ltd filed Critical British Periclase Co Ltd
Priority to GB3637465A priority Critical patent/GB1096408A/en
Priority to DE19661571328 priority patent/DE1571328B2/en
Publication of GB1096408A publication Critical patent/GB1096408A/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
    • C04B35/42—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 chromites
    • 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
    • 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")
    • 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
    • C04B35/12—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 chromium oxide
    • 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
    • C04B35/44—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 aluminates

Abstract

A magnesite-chrome refractory is made by forming a mixture of magnesite, or a precursor thereof, and chrome ore, in which all the chrome ore is - 72 mesh B.S., and subjecting the mixture to a burning process comprising a dead-burning stage whereby all the chrome ore is dissolved in the magnesia at the temperature of dead-burning. Preferably a mixture of chrome ore and caustic magnesia is formed into pellets prior to the dead-burning stage. The caustic magnesia is preferably one which, if dead-burned alone, would yield a dead-burned magnesite containing less than 1% by weight SiO2, less than 1% CaO and less than 2% R2O3 where R = Fe, Al or Cr. The magnesite may be ground before or after mixing with the chrome ore to a specific surface of at least 0.5 m2/g. The chrome ore may contain less than 2% SiO2 and the resulting magnesitechrome refractory preferably has a CaO:SiO2 molar ratio of less than 2:1 and contains 5-30% by weight chrome ore. The refractory may also contain a small quantity, e.g. 2% by weight TiO2.
GB3637465A 1965-04-24 1965-04-24 Magnesite-chrome refractories Expired GB1096408A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3637465A GB1096408A (en) 1965-04-24 1965-04-24 Magnesite-chrome refractories
DE19661571328 DE1571328B2 (en) 1965-04-24 1966-08-24 Process for the production of a refractory material from magnesia and chromium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3637465A GB1096408A (en) 1965-04-24 1965-04-24 Magnesite-chrome refractories

Publications (1)

Publication Number Publication Date
GB1096408A true GB1096408A (en) 1967-12-29

Family

ID=10387564

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3637465A Expired GB1096408A (en) 1965-04-24 1965-04-24 Magnesite-chrome refractories

Country Status (2)

Country Link
DE (1) DE1571328B2 (en)
GB (1) GB1096408A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9212098B2 (en) 2012-09-28 2015-12-15 Refractory Intellectual Property Gmbh & Co. Blend for the production of a refractory material, a refractory material, a method for the manufacture of a refractory material, and use of a substance as a sintering aid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9212098B2 (en) 2012-09-28 2015-12-15 Refractory Intellectual Property Gmbh & Co. Blend for the production of a refractory material, a refractory material, a method for the manufacture of a refractory material, and use of a substance as a sintering aid

Also Published As

Publication number Publication date
DE1571328B2 (en) 1972-06-29
DE1571328A1 (en) 1971-02-18

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