ZA202306191B - Mobile molten iron desiliconizing and dephosphorizing method - Google Patents

Mobile molten iron desiliconizing and dephosphorizing method

Info

Publication number
ZA202306191B
ZA202306191B ZA2023/06191A ZA202306191A ZA202306191B ZA 202306191 B ZA202306191 B ZA 202306191B ZA 2023/06191 A ZA2023/06191 A ZA 2023/06191A ZA 202306191 A ZA202306191 A ZA 202306191A ZA 202306191 B ZA202306191 B ZA 202306191B
Authority
ZA
South Africa
Prior art keywords
ladle
molten iron
desiliconizing
dephosphorizing
task
Prior art date
Application number
ZA2023/06191A
Inventor
Sun Caijiao
Hong Lukuo
Ai Liqun
Zhou Meijie
Tong Shuai
Zhang Shen
Original Assignee
Univ North China Science & Technology
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 Univ North China Science & Technology filed Critical Univ North China Science & Technology
Publication of ZA202306191B publication Critical patent/ZA202306191B/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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/02—Dephosphorising or desulfurising
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/14—Discharging devices, e.g. for slag
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/04—Removing impurities other than carbon, phosphorus or sulfur
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

Disclosed is a mobile molten iron desiliconizing and dephosphorizing method. The method includes the following steps: step 1: presetting a desiliconizing task in a molten iron runner and a ladle, and inserting a stirring head into the molten iron runner, wherein a powder inlet is formed in a top of the stirring head, a powder outlet is formed in a stirring blade on a lower portion of the stirring head, and a powder channel is communicated between the powder inlet and the powder outlet inside the stirring head, through which oxygen or dedusting ash is sprayed into the molten iron runner for continuous desiliconizing; then removing desiliconized slag from the ladle by slagging off; and step 2: presetting a dephosphorizing task in a transportation process of the ladle, using inert gas as a carrier in a process of transporting the ladle to a converter plant, and spraying, by a bottom blowing system, a dephosphorizing agent into the ladle in the transportation process for continuous dephosphorizing. In the present disclosure, the desiliconizing task is preset in the molten iron runner and the ladle, and part of the dephosphorizing task is preset in the transportation process of the ladle, thereby achieving more compact production flow, saving smelting time and reducing a smelting burden on a converter.
ZA2023/06191A 2022-11-23 2023-06-12 Mobile molten iron desiliconizing and dephosphorizing method ZA202306191B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211469716.7A CN115505668A (en) 2022-11-23 2022-11-23 Movable molten iron desiliconizing and dephosphorizing method

Publications (1)

Publication Number Publication Date
ZA202306191B true ZA202306191B (en) 2023-12-20

Family

ID=84514455

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA2023/06191A ZA202306191B (en) 2022-11-23 2023-06-12 Mobile molten iron desiliconizing and dephosphorizing method

Country Status (3)

Country Link
CN (1) CN115505668A (en)
WO (1) WO2024108878A1 (en)
ZA (1) ZA202306191B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115505668A (en) * 2022-11-23 2022-12-23 华北理工大学 Movable molten iron desiliconizing and dephosphorizing method

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE548646A (en) * 1955-06-15
CN1718762A (en) * 2004-07-10 2006-01-11 李中祥 Blast furnace and converter for molten iron hearth large scale desulfurization or three eliminating simultaneously
CN100572565C (en) * 2007-03-14 2009-12-23 张登山 Hot metal pretreatment method and pretreatment unit thereof
CN101519711A (en) * 2008-02-26 2009-09-02 宝山钢铁股份有限公司 Method for desiliconizing, demanganizing, dephosphorizing and desulfurating molten iron
JP5691198B2 (en) * 2010-03-05 2015-04-01 Ｊｆｅスチール株式会社 Hot metal desiliconization method
CN102154533B (en) * 2011-05-09 2012-07-25 武汉钢铁(集团)公司 Jet stirrer for mechanical stirring and desulfurizing of molten iron
CN204918645U (en) * 2015-09-01 2015-12-30 武汉钢铁(集团)公司 Hot metal pretreatment spray gun of radius platform jetting segment structure
CN108374070A (en) * 2018-05-04 2018-08-07 北京京科名创工程技术有限公司 It is blown injecting agitating device
CN112442573B (en) * 2019-09-02 2022-06-03 江苏集萃冶金技术研究院有限公司 Molten iron pretreatment method for realizing desiliconization, dephosphorization and desulfurization in same container
CN214060551U (en) * 2020-12-25 2021-08-27 华北理工大学 Blast furnace iron runner
CN114959158B (en) * 2022-05-31 2023-06-13 本钢板材股份有限公司 High-efficiency desulfurization, desilication and dephosphorization method for molten iron runner self-rotational flow
CN115505668A (en) * 2022-11-23 2022-12-23 华北理工大学 Movable molten iron desiliconizing and dephosphorizing method

Also Published As

Publication number Publication date
CN115505668A (en) 2022-12-23
WO2024108878A1 (en) 2024-05-30

Similar Documents

Publication Publication Date Title
CN111500815B (en) Bottom blowing O2-CO2Dynamic control method for steelmaking process of CaO converter
CN102534094B (en) Method for producing tire cord steel wire by converter billet continuous casting process
CN112094980B (en) System and method for efficient smelting of converter through top-bottom composite powder injection
ZA202306191B (en) Mobile molten iron desiliconizing and dephosphorizing method
WO2011049240A1 (en) Top lance for refining and method for refining molten iron using same
WO2006050963A8 (en) Production of stainless steel of aisi 4xx grade ferritic steel in an aod converter
CN101608250A (en) A kind of winding-up CO 2The method of gas control temperature of steelmaking melting pool of converter
CN109371200A (en) A kind of smelting process making molten iron quick dephosphorization by converter bottom spray iron oxide red
CN102559998A (en) Technology for online dusting desulfuration of steel ladles
CN108504819B (en) Process and device for smelting low-micro ferrochrome through AOD and VOD duplex
CN208829713U (en) A kind of single channel Oxygen Lance With Secondary Combustion improving converter scrap ratio
CN109825665B (en) Method for reducing carbon and oxygen deposit of molten steel at converter end point
CN102851449A (en) Molten steel dephosphorization method for component-adjusted sealed argon-blowing oxygen-blowing refining furnace
CN108977620A (en) A kind of single channel Oxygen Lance With Secondary Combustion and its application method improving converter scrap ratio
CN113234886B (en) Control method for realizing ultralow iron oxide of converter end-point slag
CN113621864B (en) Method for directly smelting nitrided ferrovanadium or ferrovanadium from high-temperature vanadium slag without chemical process
JPS5743919A (en) Method for blow refining in top and/or bottom-blown converter
CN1331347A (en) Powder-spraying metallurgical technology for smelting steel in ultrahigh-power electric furnace
JP2596470B2 (en) Sloping suppression method
CN102559982A (en) Method for removing manganese from molten iron in top and bottom combined blown convertor
CN108359817B (en) Sectional type air supply vanadium extraction method for converter
TR200201466T2 (en) Multifunction nozzle.
CN114875208A (en) Production method for converter early-stage rapid desulfurization
CN116103462A (en) Method for controlling splashing of steelmaking converter by utilizing oxygen lance
JPS5743920A (en) Method for blow refining in bottom-blown converter