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FR2287511A1 - Tuyere for injecting refining gas into molten metal - using defined tuyere length in melt to reduce wear of converter lining - Google Patents

Tuyere for injecting refining gas into molten metal - using defined tuyere length in melt to reduce wear of converter lining

Info

Publication number
FR2287511A1
FR2287511A1 FR7531054A FR7531054A FR2287511A1 FR 2287511 A1 FR2287511 A1 FR 2287511A1 FR 7531054 A FR7531054 A FR 7531054A FR 7531054 A FR7531054 A FR 7531054A FR 2287511 A1 FR2287511 A1 FR 2287511A1
Authority
FR
France
Prior art keywords
tuyere
lining
gas
length
tube
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
FR7531054A
Other languages
French (fr)
Other versions
FR2287511B1 (en
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.)
Creusot Loire SA
Original Assignee
Creusot Loire SA
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 Creusot Loire SA filed Critical Creusot Loire SA
Publication of FR2287511A1 publication Critical patent/FR2287511A1/en
Application granted granted Critical
Publication of FR2287511B1 publication Critical patent/FR2287511B1/fr
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
    • C21C5/34—Blowing through the bath
    • 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
    • C21C5/48—Bottoms or tuyéres of converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

Tuyere for injecting refining gas into a metal bath in a vessel provided with a refractory lining, the tuyere possessing an outer tube (I) passing through the lining on the wall of the base of the vessel and contg. at least one inner tube (II) carrying the refining gas, whereas the annular space between the tubes carries a medium protecting the tuyere against wear. The novelty is that the free part of tube (I) projects into the bath by a length "L" in metres from the surface of the lining and where D is the bore of tube (I) in metres; P is the absolute pressure in atmos. and T the temp. in degree K, of the refining gas(es) in the tuyere head. The protective medium is pref. NH3, water, steam, gas- or liq. - hydrocarbons, or their mixt. Tuyere is used e.g. for refining steel in a converter, where the projecting length of the tuyere prevents excessive erosion of the lining round the tuyere due to currents of gas travelling backwards round the outer tube to the lining.
FR7531054A 1974-10-11 1975-10-10 Tuyere for injecting refining gas into molten metal - using defined tuyere length in melt to reduce wear of converter lining Granted FR2287511A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7412821 1974-10-11

Publications (2)

Publication Number Publication Date
FR2287511A1 true FR2287511A1 (en) 1976-05-07
FR2287511B1 FR2287511B1 (en) 1978-04-07

Family

ID=20322383

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7531054A Granted FR2287511A1 (en) 1974-10-11 1975-10-10 Tuyere for injecting refining gas into molten metal - using defined tuyere length in melt to reduce wear of converter lining

Country Status (1)

Country Link
FR (1) FR2287511A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2515211A1 (en) * 1981-10-26 1983-04-29 Nippon Steel Corp PROCESS FOR REFINING METAL

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2515211A1 (en) * 1981-10-26 1983-04-29 Nippon Steel Corp PROCESS FOR REFINING METAL

Also Published As

Publication number Publication date
FR2287511B1 (en) 1978-04-07

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Legal Events

Date Code Title Description
ST Notification of lapse