GB1365152A - Manufacture of steel - Google Patents

Manufacture of steel

Info

Publication number
GB1365152A
GB1365152A GB2824171A GB2824171A GB1365152A GB 1365152 A GB1365152 A GB 1365152A GB 2824171 A GB2824171 A GB 2824171A GB 2824171 A GB2824171 A GB 2824171A GB 1365152 A GB1365152 A GB 1365152A
Authority
GB
United Kingdom
Prior art keywords
weight
steel
june
poured
desulphurizing
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
GB2824171A
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.)
Foseco International Ltd
Original Assignee
Foseco International 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 Foseco International Ltd filed Critical Foseco International Ltd
Priority to GB2824171A priority Critical patent/GB1365152A/en
Publication of GB1365152A publication Critical patent/GB1365152A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/064—Dephosphorising; Desulfurising
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/02—Dephosphorising or desulfurising
    • 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
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
    • 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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

1365152 Desulphurizing steel; flux compositions FOSECO INTERNATIONAL Ltd 15 June 1972 [16 June 1971 1 Dec 1971] 28241/71 and 55817/71 Addition to 1170168 Headings C7D and C7M In the second (deoxidation and desulphurizing) stage of electric furnace steelmaking there is added to the bath a composition containing by weight the weight of lime being at least twice, and preferably four times the weight of iron oxide, and the latter being insufficient to oxidize completely all the oxidizable material. Magnetite is preferred, but Fe 2 O 3 may also be used, while the oxidizable material may be aluminium, silicon, calcium silicide, ferro-silicon, calciumaluminium, magnesium or mixtures of these. Additional oxidizing agents such as sodium or potassium nitrate, sodium chlorate, manganese dioxide or a perchlorate may also be present, as may be fluorspar, alumina or blast furnace slag. The preferred rate of addition is 20 to 30 kg per tonne of steel, while advantageously at the end of refining the slag is poured into a ladle and the steel then poured through it. An exemplified additive composition consists of, by weight
GB2824171A 1972-06-15 1972-06-15 Manufacture of steel Expired GB1365152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2824171A GB1365152A (en) 1972-06-15 1972-06-15 Manufacture of steel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2824171A GB1365152A (en) 1972-06-15 1972-06-15 Manufacture of steel
GB5581771 1972-06-15

Publications (1)

Publication Number Publication Date
GB1365152A true GB1365152A (en) 1974-08-29

Family

ID=26259269

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2824171A Expired GB1365152A (en) 1972-06-15 1972-06-15 Manufacture of steel

Country Status (1)

Country Link
GB (1) GB1365152A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118209A (en) * 1982-02-12 1983-10-26 Showa Denko Kk Refining agent of molten metal and methods for producing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118209A (en) * 1982-02-12 1983-10-26 Showa Denko Kk Refining agent of molten metal and methods for producing the same

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Legal Events

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