SE8204472L - Tuyere for addn. of powder materials into molten metal - has feed-pipe whose terminal part has opening connected to gas deflection channel - Google Patents

Tuyere for addn. of powder materials into molten metal - has feed-pipe whose terminal part has opening connected to gas deflection channel

Info

Publication number
SE8204472L
SE8204472L SE8204472A SE8204472A SE8204472L SE 8204472 L SE8204472 L SE 8204472L SE 8204472 A SE8204472 A SE 8204472A SE 8204472 A SE8204472 A SE 8204472A SE 8204472 L SE8204472 L SE 8204472L
Authority
SE
Sweden
Prior art keywords
tuyere
powder
addn
feed
molten metal
Prior art date
Application number
SE8204472A
Other languages
Swedish (sv)
Other versions
SE8204472D0 (en
Inventor
V I Selsky
J P Vasiyarov
E M Gudkov
V V Makrushin
Original Assignee
Sibirsk Metall Inst
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 Sibirsk Metall Inst filed Critical Sibirsk Metall Inst
Publication of SE8204472D0 publication Critical patent/SE8204472D0/en
Publication of SE8204472L publication Critical patent/SE8204472L/en

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
    • C21C5/4613—Refractory coated lances; Immersion lances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/18—Charging particulate material using a fluid carrier
    • 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
    • C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
    • 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
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Furnace Details (AREA)

Abstract

A tuyere for injection of powder material in a stream of a carrier gas into liquid metal consists of a feed tube with a device at the end to separate a part of the carrier gas from the main flow. The end piece has in its wall at least one hole through which gas escapes so that the powder concn. at the outflow nozzle is increased. This results in more effective utilisation of the powder for the purposes of carbon enrichment, deoxn. or desulphurisation. The mixture, e.g. of a desulphurising powder with compressed air, passes along the tuyere (1) to the end part where two rows of holes (2) allow the air to escape along passages (3) to an annulus (6) and to atmosphere above the metal bath level. The jet which actually enters the metal therefore has a higher powder concn.
SE8204472A 1980-11-28 1982-07-27 Tuyere for addn. of powder materials into molten metal - has feed-pipe whose terminal part has opening connected to gas deflection channel SE8204472L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SU1980/000190 WO1982001892A1 (en) 1980-11-28 1980-11-28 Tuyere for blowing in powder-like materials into molten metal

Publications (2)

Publication Number Publication Date
SE8204472D0 SE8204472D0 (en) 1982-07-27
SE8204472L true SE8204472L (en) 1982-07-27

Family

ID=21616686

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8204472A SE8204472L (en) 1980-11-28 1982-07-27 Tuyere for addn. of powder materials into molten metal - has feed-pipe whose terminal part has opening connected to gas deflection channel

Country Status (5)

Country Link
JP (1) JPS57501862A (en)
DE (1) DE3050647A1 (en)
FR (1) FR2500341A1 (en)
SE (1) SE8204472L (en)
WO (1) WO1982001892A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1064970B (en) * 1955-01-05 1959-09-10 Hoerder Huettenunion Ag Process for overwind refining of phosphorus-containing pig iron
DE1508234A1 (en) * 1966-08-04 1969-10-09 Polysius Ag Lance for pneumatic conveying devices for introducing aggregates into melting furnaces
SU427060A1 (en) * 1971-12-30 1974-05-05 М. В. Каракула, А. Д. Башмаков, Ю. И. Безуглый, В. В. Головченко , Б. Н. Ладыженский METHOD FOR INPUTING POWDERED MATERIALS TO LIQUID METAL
SU508532A1 (en) * 1974-08-19 1976-03-30 Ждановский металлургический институт Method of entering powdered reagents into the bath of steel-smelting units
US4004919A (en) * 1974-08-22 1977-01-25 Molycorp, Inc. Method and apparatus for treating metal
SE424915B (en) * 1977-10-04 1982-08-16 Stiftelsen Metallurg Forsk LANS FOR INJECTION OF POWDER-MATERIAL MATERIAL IN METAL MELTOR
FR2406669A1 (en) * 1977-10-21 1979-05-18 Siderurgie Fse Inst Rech Injection lance, esp. for molten metals - where very thin wall on lance outlet increases working life of lance
FR2432552A1 (en) * 1978-08-03 1980-02-29 Siderurgie Fse Inst Rech Immersion lance consisting of two concentric tubes - esp. for injecting powder into molten iron or steel and using two tubes with the same outlet bore dia.

Also Published As

Publication number Publication date
FR2500341B1 (en) 1983-12-23
DE3050647A1 (en) 1983-06-30
SE8204472D0 (en) 1982-07-27
FR2500341A1 (en) 1982-08-27
WO1982001892A1 (en) 1982-06-10
JPS57501862A (en) 1982-10-21

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