GB1025229A - Process for the production of alloy steels - Google Patents

Process for the production of alloy steels

Info

Publication number
GB1025229A
GB1025229A GB2282663A GB2282663A GB1025229A GB 1025229 A GB1025229 A GB 1025229A GB 2282663 A GB2282663 A GB 2282663A GB 2282663 A GB2282663 A GB 2282663A GB 1025229 A GB1025229 A GB 1025229A
Authority
GB
United Kingdom
Prior art keywords
slag
blowing
ferro
added
calcium
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
GB2282663A
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.)
Gussstahlwerk Witten AG
Original Assignee
Gussstahlwerk Witten 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 Gussstahlwerk Witten AG filed Critical Gussstahlwerk Witten AG
Publication of GB1025229A publication Critical patent/GB1025229A/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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/005—Manufacture of stainless steel
    • 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

Abstract

Alloy steel is produced from crude iron by first top-blowing with oxygen in the presence of a slag rich in iron oxide and having a basicity greater than 3 until the phosphorus content of the bath is reduced below 0.025%. The slag is then removed, alloying elements added, generally as ferro-alloys or as alloy steel scrap, and the bath again blown with oxygen under a slag of basicity about 2 and constituting 1 to 4% by weight of the metal until the desired carbon content is reached. Heat producing substances such as ferro-silicon may be added before the second stage of blowing; after blowing is complete reducing agents such as aluminium, calcium carbide ferro-silicon or calcium silicide may be added to recover alloying elements from the slag. Also after blowing is complete the slag may be partially removed and additions of lime and fluorspar melted by burner; maintenance of this slag in a reducing condition by the addition of calcium carbide, coke or calcium silicide reduces the sulphur content of the steel to 0.005%.
GB2282663A 1962-07-06 1963-06-07 Process for the production of alloy steels Expired GB1025229A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU547462 1962-07-06

Publications (1)

Publication Number Publication Date
GB1025229A true GB1025229A (en) 1966-04-06

Family

ID=3695941

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2282663A Expired GB1025229A (en) 1962-07-06 1963-06-07 Process for the production of alloy steels

Country Status (1)

Country Link
GB (1) GB1025229A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991009143A1 (en) * 1989-12-08 1991-06-27 Donetsky Politekhnichesky Institut Method for smelting general-purpose steel
RU2612246C1 (en) * 2015-10-16 2017-03-03 Общество с ограниченной ответственностью "ЧерметИнформСистемы" Method of steelmaking in basic oxygen furnace
RU2663330C1 (en) * 2017-09-13 2018-08-03 Михаил Иванович Костин Air-screen separator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991009143A1 (en) * 1989-12-08 1991-06-27 Donetsky Politekhnichesky Institut Method for smelting general-purpose steel
RU2612246C1 (en) * 2015-10-16 2017-03-03 Общество с ограниченной ответственностью "ЧерметИнформСистемы" Method of steelmaking in basic oxygen furnace
RU2663330C1 (en) * 2017-09-13 2018-08-03 Михаил Иванович Костин Air-screen separator

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