JPS5445611A - Treating molten metal - Google Patents

Treating molten metal

Info

Publication number
JPS5445611A
JPS5445611A JP11207777A JP11207777A JPS5445611A JP S5445611 A JPS5445611 A JP S5445611A JP 11207777 A JP11207777 A JP 11207777A JP 11207777 A JP11207777 A JP 11207777A JP S5445611 A JPS5445611 A JP S5445611A
Authority
JP
Japan
Prior art keywords
carrier gas
additive
lance
desulfurization
deoxidation
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.)
Pending
Application number
JP11207777A
Other languages
Japanese (ja)
Inventor
Toshiyasu Onishi
Shuzo Ito
Kunio Ishimitsu
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP11207777A priority Critical patent/JPS5445611A/en
Publication of JPS5445611A publication Critical patent/JPS5445611A/en
Pending 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
    • C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053—Fe as the principal constituent
    • B23K35/308—Fe as the principal constituent with Cr as next major constituent

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE:In deoxidation and desulfurization processes wherein a carrier gas mixed with a smelting powder additive is blowing into a molten pig iron or steel, the carrier gas is preheated so as to effectively prevent blocking of lance holes and to improve desulfurization efficiency while using a lesser gas quantity. CONSTITUTION:A carrier gas is preferably heated to 200 to 800 deg.C while passsing from an inlet 8 through a heat exchanger 7. A specified quantity of additive is added to the carrier gas from an additive reservoir 12 through a control valve 13. Then, the high temperature aditive-suspending carrier gas passes through a pipe 14 into a lance 4 dipped in a ladle 1. The suspension bubbles consisting of powder additive and carrier gas are injected from the lance terminal 6 into molten components, where they are reacted with each other and cause agitation to promote floating and separation of deoxidation and desulfurization products.
JP11207777A 1977-09-16 1977-09-16 Treating molten metal Pending JPS5445611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11207777A JPS5445611A (en) 1977-09-16 1977-09-16 Treating molten metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11207777A JPS5445611A (en) 1977-09-16 1977-09-16 Treating molten metal

Publications (1)

Publication Number Publication Date
JPS5445611A true JPS5445611A (en) 1979-04-11

Family

ID=14577488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11207777A Pending JPS5445611A (en) 1977-09-16 1977-09-16 Treating molten metal

Country Status (1)

Country Link
JP (1) JPS5445611A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56133413A (en) * 1980-03-21 1981-10-19 Nippon Steel Corp Steel making method by divided refining
JPS6013016A (en) * 1983-06-30 1985-01-23 Nippon Denko Kk Desulfurizing method of high-carbon ferrochromium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56133413A (en) * 1980-03-21 1981-10-19 Nippon Steel Corp Steel making method by divided refining
JPS6362562B2 (en) * 1980-03-21 1988-12-02
JPS6013016A (en) * 1983-06-30 1985-01-23 Nippon Denko Kk Desulfurizing method of high-carbon ferrochromium

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