GB1495899A - Method for treatment of ferrosilicon nitride - Google Patents

Method for treatment of ferrosilicon nitride

Info

Publication number
GB1495899A
GB1495899A GB1929776A GB1929776A GB1495899A GB 1495899 A GB1495899 A GB 1495899A GB 1929776 A GB1929776 A GB 1929776A GB 1929776 A GB1929776 A GB 1929776A GB 1495899 A GB1495899 A GB 1495899A
Authority
GB
United Kingdom
Prior art keywords
ferrosilicon nitride
treatment
ferric
acid
ferrosilicon
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
GB1929776A
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.)
Denka Co Ltd
Original Assignee
Denki Kagaku Kogyo KK
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 Denki Kagaku Kogyo KK filed Critical Denki Kagaku Kogyo KK
Publication of GB1495899A publication Critical patent/GB1495899A/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
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/584—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
    • C01B21/0602—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with two or more other elements chosen from metals, silicon or boron
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/04—Blast furnaces with special refractories

Abstract

1495899 Ferrosilicon nitride treatment DENKI KAGAKU KOGYO KK 11 May 1976 [15 May 1975] 19297/76 Heading C1A Ferrosilicon nitride, intended for use in making troughs for molten iron in a blast furnace system, is blended with an aqueous acidic solution, especially a dilute solution of an acid and the blend subjected to air oxidation, at 50‹ to 200‹ C., suitably using wet air. Either inorganic or organic acids may be used, and those specified include hydrochloric, sulphuric, nitric, phosphoric, dichromic and chromic acids, as well as formic, acetic, oxalic, tartaric and citric acid. Inorganic salts forming acid aqueous solutions may also be used, e.g. aluminium phosphate, ferric chloride, ferric sulphate and aluminium sulphate. Treatment converts metallic iron present in the ferrosilicon nitride into an iron salt which is then oxidized to ferric oxide, and generally reduces the exothermic temperature of the material.
GB1929776A 1975-05-15 1976-05-11 Method for treatment of ferrosilicon nitride Expired GB1495899A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50057820A JPS51133197A (en) 1975-05-15 1975-05-15 The processing technique of the nitrided ferrosilicon

Publications (1)

Publication Number Publication Date
GB1495899A true GB1495899A (en) 1977-12-21

Family

ID=13066546

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1929776A Expired GB1495899A (en) 1975-05-15 1976-05-11 Method for treatment of ferrosilicon nitride

Country Status (5)

Country Link
JP (1) JPS51133197A (en)
CA (1) CA1059728A (en)
DE (1) DE2621584C3 (en)
FR (1) FR2310961A1 (en)
GB (1) GB1495899A (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE237436C (en) *
JPS4930607A (en) * 1972-07-27 1974-03-19
FR2281905A1 (en) * 1974-08-14 1976-03-12 Denki Kagaku Kogyo Kk Ferrosilicon nitride prodn. for use in metallurgy - by nitriding ferrosilicon with nitrogen and treating with water to remove impurities

Also Published As

Publication number Publication date
FR2310961A1 (en) 1976-12-10
DE2621584C3 (en) 1979-01-18
JPS5537485B2 (en) 1980-09-29
CA1059728A (en) 1979-08-07
DE2621584A1 (en) 1976-12-02
JPS51133197A (en) 1976-11-18
DE2621584B2 (en) 1978-05-24

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19960510