JPS55134123A - Dephosphorization method of high chromium content molten steel - Google Patents

Dephosphorization method of high chromium content molten steel

Info

Publication number
JPS55134123A
JPS55134123A JP3976579A JP3976579A JPS55134123A JP S55134123 A JPS55134123 A JP S55134123A JP 3976579 A JP3976579 A JP 3976579A JP 3976579 A JP3976579 A JP 3976579A JP S55134123 A JPS55134123 A JP S55134123A
Authority
JP
Japan
Prior art keywords
molten steel
cac
chromium content
added
high chromium
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
JP3976579A
Other languages
Japanese (ja)
Other versions
JPS5745450B2 (en
Inventor
Sadao Hara
Tomoo Takenouchi
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.)
Japan Steel Works Ltd
Original Assignee
Japan Steel Works 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 Japan Steel Works Ltd filed Critical Japan Steel Works Ltd
Priority to JP3976579A priority Critical patent/JPS55134123A/en
Publication of JPS55134123A publication Critical patent/JPS55134123A/en
Publication of JPS5745450B2 publication Critical patent/JPS5745450B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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

Abstract

PURPOSE: To dephosphorize the molten steel containing Cr without causing oxidation loss of Cr by mixing Si together with CaC2 as a dephosphorizer and charging these into the molten steel at the dephosphorizing of said molten steel.
CONSTITUTION: At the dephosphorizing of the molten steel containing Cr>1%, Si of 0.5W2.0% is simultaneously added to the CaC2 as a dephosphorizer in order to considerably increase the activity of P in the molten steel. To add this into the molten steel, the cylindrical vessels made of iron plates having multiple holes and packed with the mixture of CaC2 and Si are added in the molten steel or these are added by a blowing method using Ar gas or the like. The addition of Si locally increases the activity of P of the molten steel and causes it to react to CaC2, thereby permitting the dephosphorization without causing oxidation loss of Cr unlike conventional methods.
COPYRIGHT: (C)1980,JPO&Japio
JP3976579A 1979-04-04 1979-04-04 Dephosphorization method of high chromium content molten steel Granted JPS55134123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3976579A JPS55134123A (en) 1979-04-04 1979-04-04 Dephosphorization method of high chromium content molten steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3976579A JPS55134123A (en) 1979-04-04 1979-04-04 Dephosphorization method of high chromium content molten steel

Publications (2)

Publication Number Publication Date
JPS55134123A true JPS55134123A (en) 1980-10-18
JPS5745450B2 JPS5745450B2 (en) 1982-09-28

Family

ID=12562026

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3976579A Granted JPS55134123A (en) 1979-04-04 1979-04-04 Dephosphorization method of high chromium content molten steel

Country Status (1)

Country Link
JP (1) JPS55134123A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531104A (en) * 1976-06-24 1978-01-07 Nippon Steel Corp Dephosphrization of metal or alloy
JPS531619A (en) * 1976-06-28 1978-01-09 Nippon Steel Corp Production of low phosphorus and high chromium steel
JPS532324A (en) * 1976-06-29 1978-01-11 Nippon Steel Corp Melting and ingot casting of low phosphor chromium steel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531104A (en) * 1976-06-24 1978-01-07 Nippon Steel Corp Dephosphrization of metal or alloy
JPS531619A (en) * 1976-06-28 1978-01-09 Nippon Steel Corp Production of low phosphorus and high chromium steel
JPS532324A (en) * 1976-06-29 1978-01-11 Nippon Steel Corp Melting and ingot casting of low phosphor chromium steel

Also Published As

Publication number Publication date
JPS5745450B2 (en) 1982-09-28

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