JPS57137411A - Refining method for converter - Google Patents

Refining method for converter

Info

Publication number
JPS57137411A
JPS57137411A JP2253981A JP2253981A JPS57137411A JP S57137411 A JPS57137411 A JP S57137411A JP 2253981 A JP2253981 A JP 2253981A JP 2253981 A JP2253981 A JP 2253981A JP S57137411 A JPS57137411 A JP S57137411A
Authority
JP
Japan
Prior art keywords
lance
converter
slag
level
rangefinder
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.)
Granted
Application number
JP2253981A
Other languages
Japanese (ja)
Other versions
JPS6215605B2 (en
Inventor
Hajime Nashiwa
Takeshi Katogi
Kiyoshi Ichihara
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP2253981A priority Critical patent/JPS57137411A/en
Publication of JPS57137411A publication Critical patent/JPS57137411A/en
Publication of JPS6215605B2 publication Critical patent/JPS6215605B2/ja
Granted 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)

Abstract

PURPOSE:To control dephosphorization without causing the decrease or the like in the yield of tapping owing to generation of slopping by measuring the slag level formed in a converter, and controlling the height of a lance in accordance with the slag level. CONSTITUTION:In a refining method for converters for refining molten steel by inserting a lance through the opening in the upper part of the converter and blowing gaseous O2 through the lance, a rangefinder such as microwave rangefinder is installed through the opening in the upper part of the converter by directing its detection direction toward the melt level of the slag in the converter. The rangefinder measures slag levels continuously during blowing and displays the results of the measurement in, for example, a control room. The operator controls the relative positions of the lance with the slag level in accordance with the predetermined standard pattern of the distance between the lance and the slag level.
JP2253981A 1981-02-17 1981-02-17 Refining method for converter Granted JPS57137411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2253981A JPS57137411A (en) 1981-02-17 1981-02-17 Refining method for converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2253981A JPS57137411A (en) 1981-02-17 1981-02-17 Refining method for converter

Publications (2)

Publication Number Publication Date
JPS57137411A true JPS57137411A (en) 1982-08-25
JPS6215605B2 JPS6215605B2 (en) 1987-04-08

Family

ID=12085602

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2253981A Granted JPS57137411A (en) 1981-02-17 1981-02-17 Refining method for converter

Country Status (1)

Country Link
JP (1) JPS57137411A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0514628U (en) * 1991-08-09 1993-02-26 自動車機器株式会社 Lever mounting structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51115217A (en) * 1975-04-03 1976-10-09 Nippon Steel Corp Device for controlling melt-surface level in converter
JPS54119316A (en) * 1978-03-09 1979-09-17 Sumitomo Metal Ind Ltd Slopping control method in converter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51115217A (en) * 1975-04-03 1976-10-09 Nippon Steel Corp Device for controlling melt-surface level in converter
JPS54119316A (en) * 1978-03-09 1979-09-17 Sumitomo Metal Ind Ltd Slopping control method in converter

Also Published As

Publication number Publication date
JPS6215605B2 (en) 1987-04-08

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