WO2004020676A1 - Procede de raffinage et de modification d'un bain de fusion fer / carbone - Google Patents

Procede de raffinage et de modification d'un bain de fusion fer / carbone Download PDF

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Publication number
WO2004020676A1
WO2004020676A1 PCT/RU2002/000404 RU0200404W WO2004020676A1 WO 2004020676 A1 WO2004020676 A1 WO 2004020676A1 RU 0200404 W RU0200404 W RU 0200404W WO 2004020676 A1 WO2004020676 A1 WO 2004020676A1
Authority
WO
WIPO (PCT)
Prior art keywords
iron
mixture
refining
modifying
magnesium
Prior art date
Application number
PCT/RU2002/000404
Other languages
English (en)
Russian (ru)
Inventor
Rinat Gilemovich Usmanov
Anton Yakovlevich Dynin
Nikolai Vasilievich Malkov
Ivan Vasilievich Ryabchikov
Vasily Efimovich Roschin
Viktor Pavlovich Gribanov
Original Assignee
Obschestvo S Ogranichennoy Otvetsvennostyu Nauchno-Proizvodst Vennoe Predpriyatie 'tekhnologiya'
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 Ogranichennoy Otvetsvennostyu Nauchno-Proizvodst Vennoe Predpriyatie 'tekhnologiya' filed Critical Obschestvo S Ogranichennoy Otvetsvennostyu Nauchno-Proizvodst Vennoe Predpriyatie 'tekhnologiya'
Priority to AU2002332370A priority Critical patent/AU2002332370A1/en
Priority to EA200401349A priority patent/EA006637B1/ru
Priority to PCT/RU2002/000404 priority patent/WO2004020676A1/fr
Publication of WO2004020676A1 publication Critical patent/WO2004020676A1/fr

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
    • 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
    • C21C1/025—Agents used for dephosphorising or desulfurising
    • 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

Definitions

  • the invention is subject to metallurgy, and the name for the separation of cast iron alloys has become synthetic slag and modifying their active components.
  • the proposed method can be used in metallurgical and machine-building plants for sintering and modifying iron and steel smelting.
  • the method of processing the alloy was known to become barium ( ⁇ , application 57-131116, 1982), including the introduction of a slag mixture with a ratio of 5-15 kg / t, wt.%: 2 - 30%, 2%, 10-30% 15% ⁇ 1 2 0 ⁇ , 3 - 5% ⁇ 0 and Ca ⁇ 2> and the subsequent processing of the alloy with barium or its alloy with a mixture of 0.1 kg / ⁇ .
  • the alloy has become the result of the inventive mixture and the fusion mixture.
  • a convenient method is a two-stage and large slag mixture. Otherwise, the indicated method includes the use of a flashlight, which is easy to transfer to a gas phase and is converted to aluminum and magnesium, which is electrically compatible.
  • 25 modifying mixture of materials containing barium, calcium, magnesium, rare-earth metals and brown also contains aluminum and by-product, but also as a source of material 3 ba ⁇ y, ⁇ altsy, magnesium and ⁇ ed ⁇ zemelnye me ⁇ ally is ⁇ lzuyu ⁇ ⁇ sidy and / or ⁇ a ⁇ b ⁇ na ⁇ y ba ⁇ iya, ⁇ altsiya, magnesium and ⁇ sidy ⁇ ed ⁇ zemelny ⁇ me ⁇ all ⁇ v, ⁇ i e ⁇ m ⁇ a ⁇ shsh ⁇ uyuschuyu and m ⁇ di ⁇ itsi ⁇ uyuschuyu mixture vv ⁇ dya ⁇ ⁇ i ⁇ em ⁇ e ⁇ a ⁇ u ⁇ e zhelez ⁇ ugle ⁇ dis ⁇ g ⁇ ⁇ as ⁇ lava not less than 1300 ° C ⁇ liches ⁇ ve 0, 5 - 5 ⁇ g / ⁇ ⁇ and at the following combination of components, mass. %: oxide
  • the refining and modifying mixture is continuous at the bottom of a tank filled with iron-containing melted alloy.
  • Restrictions on the availability of mineral deposits are also related to their high cost. Reducing ⁇ liches ⁇ va ⁇ sid ⁇ v ⁇ ed ⁇ zemelny ⁇ me ⁇ all ⁇ v mixture below nizhneg ⁇ ⁇ edela (1 wt.%) ⁇ ivede ⁇ ⁇ and reduce its ⁇ a ⁇ ini ⁇ uyuschey m ⁇ di ⁇ itsi ⁇ uyuschey s ⁇ s ⁇ bn ⁇ s ⁇ i, ⁇ s ⁇ l ⁇ u ⁇ sidy ⁇ ed ⁇ zemelny ⁇ me ⁇ all ⁇ v themselves ⁇ ed ⁇ zemelnye me ⁇ ally yavlyayu ⁇ sya naib ⁇ lee e ⁇ e ⁇ ivnymi ⁇ m ⁇ nen ⁇ ami ⁇ a ⁇ ini ⁇ uyuschey m ⁇ di ⁇ itsi ⁇ uyuschey and mixtures thereof.
  • the waste of the separating and modifying mixture of 0.5 - 5.0 kg / t is optimal, since the decrease in the consumption of less than 0.5 kg / t does not provide the necessary> increases that to undesirable high contents in the processed iron coal and alloy for active components and unavailable economic products.
  • a decrease in the temperature of the iron-carbonaceous alloy below 1300 ° C leads to a sharp decrease in the efficiency of its separation and modification and does not result in a better performance.
  • the proposed method for the separation and modifying of iron-carbon alloy includes the preparation of a separating and modifying mixture and its introduction into the processed carbon-iron mixture.
  • the method according to the invention is carried out as follows. Components of the refining and modifying mixture in the indicated composition (volume of particles of 2 mm) are thoroughly mixed and non-porous. 7
  • the installed active components are absorbed by iron and carbide, and the melted slag in the form of iron and iron are taken into account by the B ⁇ lshaya ⁇ ve ⁇ n ⁇ s ⁇ ⁇ eagi ⁇ vaniya and ⁇ gl ⁇ schenie v ⁇ ss ⁇ an ⁇ vlenny ⁇ a ⁇ ivny ⁇ ⁇ m ⁇ nen ⁇ v zhelez ⁇ ugle ⁇ dis ⁇ ym ⁇ as ⁇ lav ⁇ m ⁇ bes ⁇ echivayu ⁇ ⁇ e ⁇ anie ⁇ ea ⁇ tsy v ⁇ ss ⁇ an ⁇ vleniya a ⁇ ivny ⁇ ⁇ m ⁇ nen ⁇ v ⁇ a ⁇ iches ⁇ i d ⁇ s ⁇ s ⁇ yaniya ⁇ avn ⁇ vesiya and small s ⁇ s ⁇ vs ⁇ lyvaniya shla ⁇ vy ⁇ ⁇ a ⁇ el with b ⁇ lsh ⁇ y depth ⁇ i b ⁇ lsh ⁇ y ⁇ ve ⁇ n ⁇
  • E ⁇ ⁇ bes ⁇ echivae ⁇ vys ⁇ uyu s ⁇ e ⁇ en is ⁇ lz ⁇ vaniya a ⁇ ivnzh ⁇ m ⁇ nen ⁇ v, e ⁇ e ⁇ ivnuyu ⁇ b ⁇ ab ⁇ u zhelez ⁇ ugle ⁇ dis ⁇ g ⁇ ⁇ as ⁇ lava shla ⁇ m and ⁇ zv ⁇ lyae ⁇ leg ⁇ ⁇ eguli ⁇ va ⁇ s ⁇ de ⁇ zhanie vv ⁇ dimzh ⁇ m ⁇ nen ⁇ v in ⁇ b ⁇ aba ⁇ yvaem ⁇ m zhelez ⁇ ugle ⁇ dis ⁇ m 5 ⁇ as ⁇ lave.
  • the processing has become a refining and modifying mixture at a temperature of 1600 ° ⁇ , cast iron at a temperature of 1300 ° ⁇ and 1250 ° ⁇ . Finishing and modifying mixture was introduced to the bottom of the crucible with metal and after being burned for 5 minutes, the alloy was poured into cast iron.
  • the composition of the separating and modifying mixture is on the basis of: 20% silico-metal, 20% silico-calcium, 20% silico-barium, 3% 9 Magnesium, 23% Lime, 7% Round, 7% Smelter

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)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

L'invention se rapporte à la métallurgie et notamment au raffinage et à la modification des bains de fusion. Le procédé de raffinage et de modification des bains de fusion de l'invention consiste à introduire en continu au fond du récipient, après son remplissage avec un bain de fusion fer / carbone à une température égale ou supérieure à 1300 °C, un mélange de raffinage et de modification qui contient des oxydes de métaux de terres rares, des oxydes et/ou des carbonates de baryum, de calcium, de magnésium, des minerais de borates, de l'aluminium, et du silicium, dans des quantités en % de masse comprises, respectivement, entre 1 - 10, 50 - 70, 2 - 5, 5 - 20, 20 - 35, avec une consommation de 0,5 à 5,0 kg / t. Le procédé permet d'effectuer le raffinage et la modification simultanés du bain de fusion de fer / carbone pendant un temps prolongé, avec une surface de réaction étendue, et d'assurer une faible teneur en soufre dans le bain de fusion fer / carbone avec une granularité peu élevée, une contamination relativement réduite de l'acier par des impuretés non métalliques et une forme avantageuse du graphite dans la fonte.
PCT/RU2002/000404 2002-08-30 2002-08-30 Procede de raffinage et de modification d'un bain de fusion fer / carbone WO2004020676A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2002332370A AU2002332370A1 (en) 2002-08-30 2002-08-30 Method for refining and modifying iron-carbon melt
EA200401349A EA006637B1 (ru) 2002-08-30 2002-08-30 Способ рафинирования и модифицирования железоуглеродистого расплава
PCT/RU2002/000404 WO2004020676A1 (fr) 2002-08-30 2002-08-30 Procede de raffinage et de modification d'un bain de fusion fer / carbone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RU2002/000404 WO2004020676A1 (fr) 2002-08-30 2002-08-30 Procede de raffinage et de modification d'un bain de fusion fer / carbone

Publications (1)

Publication Number Publication Date
WO2004020676A1 true WO2004020676A1 (fr) 2004-03-11

Family

ID=31974191

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2002/000404 WO2004020676A1 (fr) 2002-08-30 2002-08-30 Procede de raffinage et de modification d'un bain de fusion fer / carbone

Country Status (3)

Country Link
AU (1) AU2002332370A1 (fr)
EA (1) EA006637B1 (fr)
WO (1) WO2004020676A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU582301A1 (ru) * 1975-09-16 1977-11-30 Предприятие П/Я А-7845 Способ модифицировани и раскислени азотосодержащих сталей и сплавов
SU740837A1 (ru) * 1977-12-16 1980-06-15 Институт Проблем Литья Ан Украинской Сср Модифицирующа смесь
US4268305A (en) * 1977-03-31 1981-05-19 Union Siderurgique Du Nord Et De L'est De La France Process for treating liquid steel intended in particular for manufacturing machine wire
JPS5713116A (en) * 1980-06-27 1982-01-23 Sumitomo Metal Ind Ltd Adding method for barium to molten steel
JPS5974212A (ja) * 1982-10-20 1984-04-26 Kawasaki Steel Corp 鉄損の少ない無方向性電磁鋼板の製造に供する溶鋼の取鍋精錬方法
RU2125101C1 (ru) * 1997-12-10 1999-01-20 Открытое акционерное общество "КАМАЗ" Комплексная добавка для внепечной обработки стали

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU582301A1 (ru) * 1975-09-16 1977-11-30 Предприятие П/Я А-7845 Способ модифицировани и раскислени азотосодержащих сталей и сплавов
US4268305A (en) * 1977-03-31 1981-05-19 Union Siderurgique Du Nord Et De L'est De La France Process for treating liquid steel intended in particular for manufacturing machine wire
SU740837A1 (ru) * 1977-12-16 1980-06-15 Институт Проблем Литья Ан Украинской Сср Модифицирующа смесь
JPS5713116A (en) * 1980-06-27 1982-01-23 Sumitomo Metal Ind Ltd Adding method for barium to molten steel
JPS5974212A (ja) * 1982-10-20 1984-04-26 Kawasaki Steel Corp 鉄損の少ない無方向性電磁鋼板の製造に供する溶鋼の取鍋精錬方法
RU2125101C1 (ru) * 1997-12-10 1999-01-20 Открытое акционерное общество "КАМАЗ" Комплексная добавка для внепечной обработки стали

Also Published As

Publication number Publication date
AU2002332370A1 (en) 2004-03-19
EA200401349A1 (ru) 2005-08-25
EA006637B1 (ru) 2006-02-24

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