FR2414076A1 - Refining molten steel using gas-entrained reagent - introduced through combination tuyere-gate valve nozzle assembly in ladle base - Google Patents

Refining molten steel using gas-entrained reagent - introduced through combination tuyere-gate valve nozzle assembly in ladle base

Info

Publication number
FR2414076A1
FR2414076A1 FR7800444A FR7800444A FR2414076A1 FR 2414076 A1 FR2414076 A1 FR 2414076A1 FR 7800444 A FR7800444 A FR 7800444A FR 7800444 A FR7800444 A FR 7800444A FR 2414076 A1 FR2414076 A1 FR 2414076A1
Authority
FR
France
Prior art keywords
gas
reagent
gate valve
tuyere
ladle
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
FR7800444A
Other languages
French (fr)
Other versions
FR2414076B1 (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.)
British Steel Corp
Original Assignee
British 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 British Steel Corp filed Critical British Steel Corp
Priority to FR7800444A priority Critical patent/FR2414076A1/en
Publication of FR2414076A1 publication Critical patent/FR2414076A1/en
Application granted granted Critical
Publication of FR2414076B1 publication Critical patent/FR2414076B1/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
    • 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
    • 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
    • C21C7/064—Dephosphorising; Desulfurising
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
    • C22B9/103—Methods of introduction of solid or liquid refining or fluxing agents
    • 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
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]

Abstract

Molten metal is treated by gas injection in a ladle having in its base a combined tuyere and closable discharge gate valve assembly. The assembly includes a body contg. a gas inlet pipe, a discharge spout and a closure member, each of which may be aligned with the discharge nozzle of the ladle by lateral movements of the body. The injected gas contains an entrained reagent. The closure portion of the body may include a porous plug through which a stirring gas may be introduced after injection of the reagent. The gas may be air, nitrogen, argon, CO, CO2 natural gas or other hydrocarbon. Improved utilization of the reagent is attained of additions from above the bath. Problems associated with lance operation are avoided.
FR7800444A 1978-01-09 1978-01-09 Refining molten steel using gas-entrained reagent - introduced through combination tuyere-gate valve nozzle assembly in ladle base Granted FR2414076A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7800444A FR2414076A1 (en) 1978-01-09 1978-01-09 Refining molten steel using gas-entrained reagent - introduced through combination tuyere-gate valve nozzle assembly in ladle base

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7800444A FR2414076A1 (en) 1978-01-09 1978-01-09 Refining molten steel using gas-entrained reagent - introduced through combination tuyere-gate valve nozzle assembly in ladle base

Publications (2)

Publication Number Publication Date
FR2414076A1 true FR2414076A1 (en) 1979-08-03
FR2414076B1 FR2414076B1 (en) 1981-04-10

Family

ID=9203223

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7800444A Granted FR2414076A1 (en) 1978-01-09 1978-01-09 Refining molten steel using gas-entrained reagent - introduced through combination tuyere-gate valve nozzle assembly in ladle base

Country Status (1)

Country Link
FR (1) FR2414076A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2639080C1 (en) * 2016-12-28 2017-12-19 Акционерное общество "Научно-производственное объединение "Центральный научно-исследовательский институт технологии машиностроения", АО "НПО "ЦНИИТМАШ" Method of steel production

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1130736A (en) * 1955-07-05 1957-02-11 Siderurgie Fse Inst Rech Process for blowing gas and pulverulent materials into molten metals and device for carrying it out
FR2012888A1 (en) * 1968-07-12 1970-03-27 Interstop Ag
FR2076057A1 (en) * 1970-01-12 1971-10-15 Uss Eng & Consult

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1130736A (en) * 1955-07-05 1957-02-11 Siderurgie Fse Inst Rech Process for blowing gas and pulverulent materials into molten metals and device for carrying it out
FR2012888A1 (en) * 1968-07-12 1970-03-27 Interstop Ag
FR2076057A1 (en) * 1970-01-12 1971-10-15 Uss Eng & Consult

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2639080C1 (en) * 2016-12-28 2017-12-19 Акционерное общество "Научно-производственное объединение "Центральный научно-исследовательский институт технологии машиностроения", АО "НПО "ЦНИИТМАШ" Method of steel production

Also Published As

Publication number Publication date
FR2414076B1 (en) 1981-04-10

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Legal Events

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TP Transmission of property