GB437186A - Improvements relating to the manufacture of rustless or stainless iron - Google Patents

Improvements relating to the manufacture of rustless or stainless iron

Info

Publication number
GB437186A
GB437186A GB912534A GB912534A GB437186A GB 437186 A GB437186 A GB 437186A GB 912534 A GB912534 A GB 912534A GB 912534 A GB912534 A GB 912534A GB 437186 A GB437186 A GB 437186A
Authority
GB
United Kingdom
Prior art keywords
chromium
reducing
iron
rustless
agent
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
GB912534A
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.)
ALLOY RES CORP
Original Assignee
ALLOY RES CORP
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 ALLOY RES CORP filed Critical ALLOY RES CORP
Priority to GB912534A priority Critical patent/GB437186A/en
Publication of GB437186A publication Critical patent/GB437186A/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
    • 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)
  • Manufacture And Refinement Of Metals (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

In a method of making rustless or stainless iron in an electric are furnace by melting down a charge consisting principally of chromium-containing rustless scrap and an oxidizing-agent to form an iron bath containing chromium and a blanket of slag containing the oxides of iron and chromium and then reducing the chromium oxide contained in the slag, the reducing-agent used is one containing combined chromium such as ferrochrome silicon. The melting of the charge is performed continuously and the reducing agent is added while the metal and slag are at a temperature of super-heat e.g. 3050-3200 DEG F. The oxidizing agent used may by iron oxide in the form of roll scale or magnetic iron ore concentrate and the furnace is provided with a chromite lining. Instead of ferrochrome silicon reducing agents containing combined chromium and aluminium or magnesium or compositions including one or more of such agents may be employed. The rustless irons prepared usually contain 12-20 per cent or more of chromium and ,05-,15 of carbon, and may also contain up to 20 per cent of nickel, up to 5 of copper molybdenum and tungsten and up to 2 of vanadium. Chrome ore may be added along with the reducing-agent.
GB912534A 1934-03-23 1934-03-23 Improvements relating to the manufacture of rustless or stainless iron Expired GB437186A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB912534A GB437186A (en) 1934-03-23 1934-03-23 Improvements relating to the manufacture of rustless or stainless iron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB912534A GB437186A (en) 1934-03-23 1934-03-23 Improvements relating to the manufacture of rustless or stainless iron

Publications (1)

Publication Number Publication Date
GB437186A true GB437186A (en) 1935-10-23

Family

ID=9865834

Family Applications (1)

Application Number Title Priority Date Filing Date
GB912534A Expired GB437186A (en) 1934-03-23 1934-03-23 Improvements relating to the manufacture of rustless or stainless iron

Country Status (1)

Country Link
GB (1) GB437186A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455073A (en) * 1945-11-14 1948-11-30 Armco Steel Corp Production of stainless steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455073A (en) * 1945-11-14 1948-11-30 Armco Steel Corp Production of stainless steel

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