GB840242A - Method of preparing preliminary metal or steel from pig iron containing phosphorus - Google Patents

Method of preparing preliminary metal or steel from pig iron containing phosphorus

Info

Publication number
GB840242A
GB840242A GB2135/58A GB213558A GB840242A GB 840242 A GB840242 A GB 840242A GB 2135/58 A GB2135/58 A GB 2135/58A GB 213558 A GB213558 A GB 213558A GB 840242 A GB840242 A GB 840242A
Authority
GB
United Kingdom
Prior art keywords
slag
metal
fe2o3
pig iron
steel
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
GB2135/58A
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.)
Kloeckner Werke AG
Original Assignee
Kloeckner Werke 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 Kloeckner Werke AG filed Critical Kloeckner Werke AG
Publication of GB840242A publication Critical patent/GB840242A/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
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/32—Blowing from above

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

A method of producing steel or preliminary metal from pig iron containing 0.1 to 2% phosphorous by blowing oxygen containing gas on to the surface of a slag layer to oxidize FeO to Fe2O3 which is reduced at the slag - metal interface comprises carrying out the process in a refining vessel having a capacity of at least 1.3 cu. m. per metric ton of pig iron and having a depth of metal not exceeding 40 cms. The slag may be treated by the addition of lime or soda to reduce the surface tension or borax or fluorides to increase the surface tension. When steel is being prduced after the phosphorous has been removed the metal may be heated by a burner flame and the Fe2O3 in the slag allowed to remove carbon remaining in the metal, but oxygen may be added if necessary to increase the Fe2O3 in the slag. The phosphorous slag is not removed until the greater part of the Fe2O3 has been reduced. Superheated steam may be added at the beginning of the blow in the proportion of steam to oxygen of 1:2 to 1.4 and the steam is not used for more than 25% of the total time of blowing. The process may be performed in a vessel which may be rotated about its horizontal or vertical axis.
GB2135/58A 1957-01-22 1958-01-22 Method of preparing preliminary metal or steel from pig iron containing phosphorus Expired GB840242A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE840242X 1957-01-22

Publications (1)

Publication Number Publication Date
GB840242A true GB840242A (en) 1960-07-06

Family

ID=6762881

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2135/58A Expired GB840242A (en) 1957-01-22 1958-01-22 Method of preparing preliminary metal or steel from pig iron containing phosphorus

Country Status (1)

Country Link
GB (1) GB840242A (en)

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