FR2063916A5 - Coated gas lances for gas injection into - metal melts - Google Patents

Coated gas lances for gas injection into - metal melts

Info

Publication number
FR2063916A5
FR2063916A5 FR7042163A FR7042163A FR2063916A5 FR 2063916 A5 FR2063916 A5 FR 2063916A5 FR 7042163 A FR7042163 A FR 7042163A FR 7042163 A FR7042163 A FR 7042163A FR 2063916 A5 FR2063916 A5 FR 2063916A5
Authority
FR
France
Prior art keywords
gas
lances
metal melts
coated
injection
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
FR7042163A
Other languages
French (fr)
Inventor
Kokan Kk Japan Nippon
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.)
OBST KARL HEINZ
Original Assignee
OBST KARL HEINZ
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 OBST KARL HEINZ filed Critical OBST KARL HEINZ
Application granted granted Critical
Publication of FR2063916A5 publication Critical patent/FR2063916A5/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
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • 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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/06—Deoxidising, e.g. killing
    • 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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/072—Treatment with gases

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

Water cooled lance for the injection of gases into molten metals can be rotated at variable speed and has a melt and slag resisting coating applied by plasma gun or chemical deposition on up to 50% of its length. Suitable coating materials are titanium nitride and carbonitride, cermets, Zr silicate, Al2O3. The treatment results in greatly improved life of the lance and also permits its deeper immersion into the melt.
FR7042163A 1969-11-26 1970-11-24 Coated gas lances for gas injection into - metal melts Expired FR2063916A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1104869 1969-11-26

Publications (1)

Publication Number Publication Date
FR2063916A5 true FR2063916A5 (en) 1971-07-09

Family

ID=3626457

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7042163A Expired FR2063916A5 (en) 1969-11-26 1970-11-24 Coated gas lances for gas injection into - metal melts

Country Status (2)

Country Link
DE (1) DE2057568A1 (en)
FR (1) FR2063916A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115141906A (en) * 2021-03-28 2022-10-04 上海梅山钢铁股份有限公司 Long-life oxygen lance nozzle for converter smelting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115141906A (en) * 2021-03-28 2022-10-04 上海梅山钢铁股份有限公司 Long-life oxygen lance nozzle for converter smelting

Also Published As

Publication number Publication date
DE2057568A1 (en) 1971-05-27

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse