JPS6447833A - Production of medium and low carbon ferromanganese - Google Patents

Production of medium and low carbon ferromanganese

Info

Publication number
JPS6447833A
JPS6447833A JP20176687A JP20176687A JPS6447833A JP S6447833 A JPS6447833 A JP S6447833A JP 20176687 A JP20176687 A JP 20176687A JP 20176687 A JP20176687 A JP 20176687A JP S6447833 A JPS6447833 A JP S6447833A
Authority
JP
Japan
Prior art keywords
lance
denotes
blown
ferromanganese
gas
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
JP20176687A
Other languages
Japanese (ja)
Other versions
JPH0699774B2 (en
Inventor
Kimiharu Yamaguchi
Yasuo Kishimoto
Shoji Miyagawa
Tetsuya Fujii
Hideji Takeuchi
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.)
JFE Steel Corp
Original Assignee
Kawasaki Steel 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP62201766A priority Critical patent/JPH0699774B2/en
Publication of JPS6447833A publication Critical patent/JPS6447833A/en
Publication of JPH0699774B2 publication Critical patent/JPH0699774B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Treatment Of Steel In Its Molten State (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

PURPOSE:To produce the titled ferromanganese in a high Mn yield from high C ferromanganese by a simple installation in low temp. operation by sending oxygen only from a top-blown lance in a reactor and optimizing the blowing conditions of said top-blown gas. CONSTITUTION:An oxidizing gas is blown by the top-blown lance 4 on the molten metal 2 of high C ferromanganese while it is stirred by a nonoxidizing gas from a tuyere 5 of the reactor 1 to decarbonize said molten metal. In this case, said blown refining is executed in such a manner that concave depth L of the bath surface on the molten metal 2 by the top-blown gas calculated in the formula I, II and III is regulated to <=200mm. In said formulas, (h) denotes the interval (mm) between the bath surface and the tip of the lance 4, Lh denotes the concave depth (mm) in the case of h=0, Q denotes the feeding rate (Nm<3>/min) of the top-blown gas, (n) denotes the number of nozzles in the lance 4, (d) denotes the diameter (mm) of the nozzle in the lance 4, theta denotes the angle between the axis of the nozzle in the lance 4 and the central axis of the lance 4 and (k) denotes the coefficient found from the formula III. By this method, medium and low C ferromanganese can be obtd. at relatively low temp. and in a high yield.
JP62201766A 1987-08-14 1987-08-14 Method for producing medium and low carbon ferromanganese Expired - Fee Related JPH0699774B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62201766A JPH0699774B2 (en) 1987-08-14 1987-08-14 Method for producing medium and low carbon ferromanganese

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62201766A JPH0699774B2 (en) 1987-08-14 1987-08-14 Method for producing medium and low carbon ferromanganese

Publications (2)

Publication Number Publication Date
JPS6447833A true JPS6447833A (en) 1989-02-22
JPH0699774B2 JPH0699774B2 (en) 1994-12-07

Family

ID=16446585

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62201766A Expired - Fee Related JPH0699774B2 (en) 1987-08-14 1987-08-14 Method for producing medium and low carbon ferromanganese

Country Status (1)

Country Link
JP (1) JPH0699774B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020152945A1 (en) * 2019-01-24 2020-07-30 Ｊｆｅスチール株式会社 Method for producing low-carbon ferromanganese

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59182909A (en) * 1983-03-31 1984-10-17 Nippon Steel Corp Lance for refining in steel making
JPS6056051A (en) * 1983-09-06 1985-04-01 Japan Metals & Chem Co Ltd Production of medium- and low-carbon ferromanganese
JPS6152212A (en) * 1985-07-17 1986-03-14 ヤンマー農機株式会社 Straw feeder of combine
JPS62116752A (en) * 1985-11-18 1987-05-28 Kawasaki Steel Corp Manufacture of low-or medium-carbon ferroalloy

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59182909A (en) * 1983-03-31 1984-10-17 Nippon Steel Corp Lance for refining in steel making
JPS6056051A (en) * 1983-09-06 1985-04-01 Japan Metals & Chem Co Ltd Production of medium- and low-carbon ferromanganese
JPS6152212A (en) * 1985-07-17 1986-03-14 ヤンマー農機株式会社 Straw feeder of combine
JPS62116752A (en) * 1985-11-18 1987-05-28 Kawasaki Steel Corp Manufacture of low-or medium-carbon ferroalloy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020152945A1 (en) * 2019-01-24 2020-07-30 Ｊｆｅスチール株式会社 Method for producing low-carbon ferromanganese

Also Published As

Publication number Publication date
JPH0699774B2 (en) 1994-12-07

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees