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WO2006001727A1 - Procede pour allier des alliages fer-carbone dans la poche - Google Patents

Procede pour allier des alliages fer-carbone dans la poche Download PDF

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Publication number
WO2006001727A1
WO2006001727A1 PCT/RU2004/000458 RU2004000458W WO2006001727A1 WO 2006001727 A1 WO2006001727 A1 WO 2006001727A1 RU 2004000458 W RU2004000458 W RU 2004000458W WO 2006001727 A1 WO2006001727 A1 WO 2006001727A1
Authority
WO
WIPO (PCT)
Prior art keywords
carbon
melt
ladle
silicon carbide
iron
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.)
Ceased
Application number
PCT/RU2004/000458
Other languages
English (en)
Russian (ru)
Inventor
Anatoly Dmitrievich Podolchuk
Mikhail Ivanovich Gasik
Vladimir Viktorovich Serbin
Anatoly Nikolaevich Ovcharuk
Igor Alexandrovich Semenov
Igor Vladimirovich Derevyanko
Igor Mikhailovich Scherban
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.)
Obschestvo S Ogranichennoi Otvetstvennostyu 'amyus'
Original Assignee
Obschestvo S Ogranichennoi Otvetstvennostyu 'amyus'
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 Obschestvo S Ogranichennoi Otvetstvennostyu 'amyus' filed Critical Obschestvo S Ogranichennoi Otvetstvennostyu 'amyus'
Publication of WO2006001727A1 publication Critical patent/WO2006001727A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • C21C7/0025—Adding carbon 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
    • C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
    • 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
    • C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
    • C21C2007/0062—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires with introduction of alloying or treating agents under a compacted form different from a wire, e.g. briquette, pellet
    • 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
    • C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires

Definitions

  • the invention relates to ferrous metallurgy, and in particular to methods for out-of-furnace treatment and alloying of melted iron-carbon alloys in a ladle using complex alloys.
  • the closest in technical essence is the method of out-of-furnace deoxidation of steel with silicon carbide fraction 0.1 ⁇ 10 mm, containing 80-
  • deoxidizers are additionally supplied within 0.2 ⁇ 0.4 kg / t of melt and aluminum with a flow rate in the range of Q, 1 ⁇ 1, 5 kg / t of melt, while the deoxidizer is produced according to: where Qi is the deoxidant consumption during the hatch process, kg / t; Q 2 - deoxidant consumption after release, kg / t;
  • K 1 and K 2 are empirical coefficients characterizing the physicochemical laws during steel deoxidation, equal to 1, 6 ⁇ 10.0 and 0.33 ⁇ 8.0, respectively, kg / t;
  • the melt is alloyed with aluminum in the form of a wire rod with flow rates in the range 0.3–0.7 kg / t of the melt and is purged with argon for 1–5 minutes with a flow rate of 0.5 ⁇ 2.0 l / min per ton of steel.
  • flow rates in the range 0.3–0.7 kg / t of the melt and is purged with argon for 1–5 minutes with a flow rate of 0.5 ⁇ 2.0 l / min per ton of steel.
  • the disadvantage of this method is the impossibility of adjusting the silicon / carbon ratio in the smelting of mild or semi-quiet steels, which narrows the range of the range of smelted steel grades and makes it difficult to obtain a grade of silicon and carbon in the finished steel.
  • silicon carbide according to patent N22219249 is used only as a deoxidizing agent, and not as a ligature.
  • the technical task of the claimed invention is to achieve complex alloying of iron-carbon alloys with silicon and carbon, providing the possibility of obtaining a wide range of assortment of smelted steel grades, as well as reducing the sulfur content in the finished melt, reducing the cost of the finished product.
  • the method of out-of-furnace alloying of iron-carbon alloys in the ladle includes the release of the iron-carbon melt from the steelmaking unit into the ladle, feeding the deoxidizers and alloys into the ladle during the melt discharge, while the melt is alloyed with briquettes containing silicon carbide 5 ⁇ 80 wt.
  • the melt is deoxidized with aluminum and adjusted by chemical composition with ferroalloys, and the briquette additionally contains substandard the smallest detail of ferromanganese at a silicon to manganese ratio of 1: (2.2–3.7), and its sludge is used as metallurgical silicon carbide, and heat-treated carbon-containing materials of electrode production are used as a carbon material.
  • the briquette may additionally contain substandard trifle of ferromanganese with a silicon to manganese ratio of 1: (2.2 ⁇ 3.7), and its sludge can be used as metallurgical silicon carbide.
  • a carbon-containing mixture can be used materials heat-treated carbon-containing electrode production. The saturation of the iron-carbon alloy with silicon and carbon occurs due to the interaction of silicon carbide with the melt by the reaction:
  • Carbon-containing materials according to TU1914-01827208846-99 and / or
  • TU914-00194042-026-01 like silicon carbide, are the products of chemothermal reactions of pure components, therefore they do not contain harmful impurities (sulfur, phosphorus, non-ferrous metals), which negatively affect the quality of steel. Reducing the cost of iron - carbon alloy is due to the fact that carbon-containing materials and sludge of silicon carbide are secondary raw materials with valuable metallurgical properties at a relatively low price.
  • the low content of harmful impurities also allows you to save material and energy resources for their removal from the melt, which also reduces the cost of the product.
  • the steel will not be sufficiently deoxidized and will not correspond to the vintage chemical composition. It is not economically feasible to give a larger amount, which also will not provide the necessary steel composition and reduce the temperature of the melt.
  • the steel will have excess aluminum and corundum (alpha - AI 2 O 3 ) non-metallic inclusions of the stroke type will form, and as a result, a decrease in the physicomechanical properties of steel.
  • corundum alpha - AI 2 O 3
  • the use of the mixture in an unbricked form leads to the removal of material by convective flows and increases the consumption of material, which affects the cost of the final product.
  • the briquette contains silicon carbide or its sludge (may also be in a mixture) in the amount of May 5 - 80. % provides grade silicon content in steel. At lower values, the silicon content will not match the vintage. At large values, an excess of silicon will appear, which does not correspond to the vintage, contributing to the formation of silicate non-metallic inclusions.
  • the briquette contains carbon and / or material of heat-treated carbon-containing electrode production within May 10 - 85. % required content is provided carbon. At lower values, the necessary decrease in the oxidation of steel will not be provided; at higher values, an excess of carbon will occur in excess of the required values.
  • the binder in quantity - the rest, provides the necessary strength of the briquettes during transportation and overloads.
  • you can use all known binders cement, flour, water glass, briquettes, etc.).
  • the inventive briquettes allow alloying steel in the bucket, strictly observing the Si / C ratio.
  • the ratio of the components of the briquette varies based on specific production conditions and the content of Si 'and C in the finished metal of a given brand.
  • table 2 shows that when the ratio of the composition of the briquette of silicon to manganese 1: (2.2 ⁇ 3.7) ensures the optimal processability of the process and obtaining a given chemical composition of steel.
  • the use of substandard trifle of ferromanganese in the briquette will reduce the cost of smelted steel.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

Selon l'invention, le procédé comprend la coulée d'un liquide fer-carbone dans la poche depuis un four d'aciérie, l'alimentation de la poche pendant la coulée du liquide avec des substances d'alliage et des réducteurs, le liquide étant allié par des briquettes contenant 5 80 % en poids de carbure de silicium et 10 85 % en poids d'une matière carbonée, le liant constituant le reste, et la réduction du liquide après la coulée avec de l'aluminium, la composition chimique finale du liquide étant régulée par l'ajout d'alliages de fer. Les briquettes comprennent aussi des déclassés de ferro-manganèse, le rapport du silicium au manganèse étant 1 (2,2 3,7), et l'on utilise en tant que carbure de silicium métallurgique ses schlammes; on utilise en tant que matériaux carbonés des matériaux ayant subi un traitement thermique provenant des électrodes et contenant du carbone.
PCT/RU2004/000458 2004-06-18 2004-11-19 Procede pour allier des alliages fer-carbone dans la poche Ceased WO2006001727A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2004118439 2004-06-18
RU2004118439/02A RU2247158C1 (ru) 2004-06-18 2004-06-18 Способ внепечного легирования железоуглеродистых сплавов в ковше

Publications (1)

Publication Number Publication Date
WO2006001727A1 true WO2006001727A1 (fr) 2006-01-05

Family

ID=35286303

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2004/000458 Ceased WO2006001727A1 (fr) 2004-06-18 2004-11-19 Procede pour allier des alliages fer-carbone dans la poche

Country Status (2)

Country Link
RU (1) RU2247158C1 (fr)
WO (1) WO2006001727A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113265510A (zh) * 2021-05-19 2021-08-17 李振发 一种新型炼钢复合材料及其制备方法和应用

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116062941B (zh) * 2023-03-02 2023-09-08 北京神舟茂华环保科技有限公司 一种光伏行业高含氟含氯废水的协同除氟脱氯的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2020663A1 (fr) * 1968-10-14 1970-07-17 Sueddeutsche Kalkstickstoff
US4586956A (en) * 1985-07-17 1986-05-06 Labate M D Method and agents for producing clean steel
RU2138563C1 (ru) * 1998-12-08 1999-09-27 АО "Новолипецкий металлургический комбинат" Способ обработки стали в ковше
RU2219249C1 (ru) * 2002-06-17 2003-12-20 Открытое акционерное общество "Северсталь" Способ внепечной обработки стали в ковше

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2020663A1 (fr) * 1968-10-14 1970-07-17 Sueddeutsche Kalkstickstoff
US4586956A (en) * 1985-07-17 1986-05-06 Labate M D Method and agents for producing clean steel
RU2138563C1 (ru) * 1998-12-08 1999-09-27 АО "Новолипецкий металлургический комбинат" Способ обработки стали в ковше
RU2219249C1 (ru) * 2002-06-17 2003-12-20 Открытое акционерное общество "Северсталь" Способ внепечной обработки стали в ковше

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113265510A (zh) * 2021-05-19 2021-08-17 李振发 一种新型炼钢复合材料及其制备方法和应用

Also Published As

Publication number Publication date
RU2247158C1 (ru) 2005-02-27

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