WO2007055609A1 - Melange pour rafinage et modification de l'acier et de la fonte - Google Patents

Melange pour rafinage et modification de l'acier et de la fonte Download PDF

Info

Publication number
WO2007055609A1
WO2007055609A1 PCT/RU2005/000552 RU2005000552W WO2007055609A1 WO 2007055609 A1 WO2007055609 A1 WO 2007055609A1 RU 2005000552 W RU2005000552 W RU 2005000552W WO 2007055609 A1 WO2007055609 A1 WO 2007055609A1
Authority
WO
WIPO (PCT)
Prior art keywords
iron
mixture
oxides
silicon
steel
Prior art date
Application number
PCT/RU2005/000552
Other languages
English (en)
Russian (ru)
Inventor
Ivan Vasilyevich Ryabchikov
Alexey Gennadyevich Panov
Original Assignee
Dynin, Anton Yakovlevich
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 Dynin, Anton Yakovlevich filed Critical Dynin, Anton Yakovlevich
Priority to PCT/RU2005/000552 priority Critical patent/WO2007055609A1/fr
Priority to EA200801032A priority patent/EA012637B1/ru
Publication of WO2007055609A1 publication Critical patent/WO2007055609A1/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
    • C21C1/08—Manufacture of 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
    • 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
    • C21C7/076—Use of slags or fluxes as treating agents
    • 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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • 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
    • 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

Definitions

  • the invention relates to the field of metallurgy, in particular to the creation of a refining and modifying mixture for the treatment of steel and cast iron.
  • the developed mixture can be used at metallurgical and machine-building enterprises for out-of-furnace treatment of steel and cast iron in order to improve their quality.
  • the disadvantage of the mixture is the toxicity and high cost of barium oxides and carbonates obtained from natural sulfate ores through complex chemical processing.
  • the introduction of the mixture into liquid steel is accompanied by a significant pyroelectric effect due to the formation of vaporous magnesium, the vapor pressure of which at a temperature of 1600 ° C exceeds 2 MPa (20 atm).
  • the disadvantage of the briquette is the low efficiency of using barium and strontium, recovered from Witeritstrontianite concentrate, due to the presence of ferrosilicon FC65 containing up to 35% iron. Such a high iron content increases the loss of these metals by evaporation due to their extremely low solubility in the resulting ferroalloy.
  • the low efficiency of the mixture is also due to the absence of a calcium-containing component in it, since the greatest effectiveness of barium and strontium in the treatment of liquid steel is manifested only in the presence of calcium, a solvent of barium and strontium, in the modifier.
  • the aim of the invention is to increase the refining and modifying ability of the mixture.
  • Datolite ore 1-5 Polymetallic ore in the form of carbonates and / or oxides contains barium, strontium, calcium, magnesium, silicon, potassium, sodium, iron, manganese, aluminum and titanium in the following components, May. %: 10-18 Ba, 2-7 Sr, 10-20 Ca, 0.4-0.7 Mg, 10-16 Si, 2-3 K, 0.7-1.5 Na, 1.5-7 , 0 Fe, 0.1-0.3 Mn, 1-4 Al and 0.4-0.8 Ti.
  • Datolite ore in the form of oxides and / or carbonates contains boron, aluminum, magnesium, calcium, silicon, iron, manganese, potassium and sodium in the following ratio, May. %: 2-4 V, 0.3-1.0 Al, 0.2-0.4 Mg, 20-30 Ca, 15-25 Si, 2-5 Fe, 0.2-2.5 Mn, 0 04-0.06 (K + Na).
  • the mixture for deoxidation and modification of steel and cast iron may contain May 5-15. % of at least one oxide from the group TiO 2 , Nb 2 O 5 , V 2 O 5 , MoO 3 , NiO.
  • the technical effect when using the invention lies in the fact that the developed composition of the mixture provides a high degree of extraction of alkaline earth and rare earth metals when they are reduced from carbonates and oxides mainly by aluminum, the subsequent formation of stable compounds with silicon, the formation of liquid synthetic slag from calcium aluminates.
  • the oxides TiO 2 , Nb 2 O 5 , V 2 O 5 , MoO 3 , and NiO into the mixture, it allows refining, modifying, and microalloying steel and cast iron at the same time.
  • Alkaline earth metals calcium, barium and strontium contribute to the most favorable type of non-metallic inclusions in steel - oxides in the sulfide shell.
  • alkaline-earth and rare-earth metals are introduced together in liquid steel, due to the low boiling point and low solubility of calcium, barium, and strontium in liquid iron, these metals are consumed to a greater extent than rare-earth metals, the boiling point of which exceeds 3000 "C.
  • These metals dissolve well in iron and are stored for subsequent interaction with harmful impurities, including nitrogen, hydrogen and non-ferrous metals, convert them to passive forms and clean grain boundaries upon cooling and crystallization of the metal.
  • a decrease in the amount of polymetallic ore in the mixture below the lower limit (30%) will lead to a decrease in its refining and modifying ability.
  • An increase in its content of more than 80% will not lead to an increase in the modifying effect of alkaline earth metals on the melt due to their extremely limited solubility in liquid iron.
  • refractory slag with a low refining capacity is formed.
  • An increase in the amount of aluminum in the mixture of more than 30% will lead to an excessively high content of aluminum oxide in the slag formed from the mixture, an increase in the melting temperature of the slag and a decrease in its refining ability.
  • a decrease in the amount of aluminum in the mixture of less than 5% will lead to insufficient reduction of the alkaline earth and rare earth metals from the mixture and, as a result, a decrease in the modifying effect.
  • the refining ability of the slag formed from the mixture decreases due to the excessively high content of silicon dioxide in it.
  • a decrease in the amount of silicon in the mixture of less than 5% will reduce its modifying ability due to unsatisfactory reduction of active elements.
  • the lower limit of the content of rare-earth metal oxides in the mixture (0.001%) is due to the fact that in some cases the necessary modifying effect is achieved practically without the participation of rare-earth metals.
  • rare earth metal oxides are scarce and costly.
  • Rare earth oxides increase more than 15% of metals is impractical due to the possibility of the formation of a steel macrostructure defect - cerium inhomogeneity.
  • Example 1 Modeling of processes occurring with a mixture when it is heated to operating temperature and exposure.
  • the proposed mixture allows to increase the yield of the alloy, the extraction of barium and strontium into it by 3-6%, additionally extract calcium, rare earth metals and titanium.
  • the use of the proposed mixture in comparison with the known allows: • to exclude the burning of the ore component, briquetting the mixture and drying the briquettes; • obtain an alloy containing highly active alkaline-earth metals, including calcium, rare-earth and alloying metals, as well as liquid-moving synthetic slag based on calcium aluminates;
  • Patent RF2023044 November 15, 2001. Bull. JV21.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

La présente invention relève du domaine de la métallurgie et concerne en particulier un traitement hors du four de l'acier et de la fonte. Cette invention permet de développer un mélange de réaction qui permet d'obtenir un niveau élevé d'extraction de métaux alcalino-terreux et de métaux des terres rares lors de la récupération de ceux-ci à partir de carbonates et d'oxydes, principalement au moyen d'aluminium, en vue de la formation ultérieure de composés de silicium stables et de la formation d'une scorie synthétique mobile dans un fluide à partir d'aluminate de calcium. Le mélange pour raffinage et modification de l'acier et de la fonte de cette invention comprend de 30 à 80 % en masse de minerai polymétallique contenant des carbonates et/ou des oxydes de métaux alcalino-terreux, de 0,001à 15 % en masse d'oxydes de métaux des terres rares, de 5 à 30 % en masse d'aluminium, de 5 à 25 % en masse de silicium ou d'alliages de celui-ci contenant au moins de 25 % de fer, ainsi que de 1à 5 % en masse de minerai de datolite. Le mélange peut également contenir de 5 à 15 % en masse d'au moins un oxyde sélectionné dans le groupe comprenant TiO2, Nb2O5, V2O5, MoO3 et NiO. Ce mélange permet d'exclure le grillage d'un composant principal, de produire et de faire sécher des briquettes et, lorsque le mélange est introduit dans un mélange en fusion de fer et de carbone, de produire un alliage contenant un élément particulièrement actif, une scorie hautement basique mobile dans un fluide et d'effectuer simultanément le raffinage, la modification et le microalliage de l'acier et de la fonte.
PCT/RU2005/000552 2005-11-08 2005-11-08 Melange pour rafinage et modification de l'acier et de la fonte WO2007055609A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/RU2005/000552 WO2007055609A1 (fr) 2005-11-08 2005-11-08 Melange pour rafinage et modification de l'acier et de la fonte
EA200801032A EA012637B1 (ru) 2005-11-08 2005-11-08 Смесь для рафинирования и модифицирования стали и чугуна

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RU2005/000552 WO2007055609A1 (fr) 2005-11-08 2005-11-08 Melange pour rafinage et modification de l'acier et de la fonte

Publications (1)

Publication Number Publication Date
WO2007055609A1 true WO2007055609A1 (fr) 2007-05-18

Family

ID=38023508

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2005/000552 WO2007055609A1 (fr) 2005-11-08 2005-11-08 Melange pour rafinage et modification de l'acier et de la fonte

Country Status (2)

Country Link
EA (1) EA012637B1 (fr)
WO (1) WO2007055609A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108796169A (zh) * 2017-12-31 2018-11-13 龙南龙钇重稀土科技股份有限公司 一种稀土合金复合添加剂及其制备方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2704153C1 (ru) * 2019-04-01 2019-10-24 федеральное государственное бюджетное образовательное учреждение высшего образования "Нижегородский государственный технический университет им. Р.Е. Алексеева" (НГТУ) Модифицирующая смесь

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5713116A (en) * 1980-06-27 1982-01-23 Sumitomo Metal Ind Ltd Adding method for barium to molten steel
SU1039969A1 (ru) * 1982-04-07 1983-09-07 Всесоюзный Проектно-Технологический Институт Литейного Производства Смесь дл комплексной обработки черных металлов
RU2023044C1 (ru) * 1992-09-10 1994-11-15 Арендное предприятие "Литмаш" Производственного объединения "Тяжмаш" Брикет для раскисления и модифицирования стали и чугуна
RU94041970A (ru) * 1994-11-21 1996-09-10 Товарищество с ограниченной ответственностью Научно-технологическая фирма "Кальтэкс" Реагент для комплексной обработки металлургических расплавов
RU2192479C1 (ru) * 2001-07-16 2002-11-10 ООО "НПП "Технология" Способ рафинирования и модифицирования железоуглеродистого расплава

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5713116A (en) * 1980-06-27 1982-01-23 Sumitomo Metal Ind Ltd Adding method for barium to molten steel
SU1039969A1 (ru) * 1982-04-07 1983-09-07 Всесоюзный Проектно-Технологический Институт Литейного Производства Смесь дл комплексной обработки черных металлов
RU2023044C1 (ru) * 1992-09-10 1994-11-15 Арендное предприятие "Литмаш" Производственного объединения "Тяжмаш" Брикет для раскисления и модифицирования стали и чугуна
RU94041970A (ru) * 1994-11-21 1996-09-10 Товарищество с ограниченной ответственностью Научно-технологическая фирма "Кальтэкс" Реагент для комплексной обработки металлургических расплавов
RU2192479C1 (ru) * 2001-07-16 2002-11-10 ООО "НПП "Технология" Способ рафинирования и модифицирования железоуглеродистого расплава

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108796169A (zh) * 2017-12-31 2018-11-13 龙南龙钇重稀土科技股份有限公司 一种稀土合金复合添加剂及其制备方法

Also Published As

Publication number Publication date
EA012637B1 (ru) 2009-12-30
EA200801032A1 (ru) 2008-08-29

Similar Documents

Publication Publication Date Title
Riposan et al. The importance of rare earth contribution from nodulizing alloys and their subsequent effect on the inoculation of ductile iron
Hils et al. Conventional and tailored Mn‐bearing alloying agents for the production of high manganese steels
WO2007055609A1 (fr) Melange pour rafinage et modification de l'acier et de la fonte
CN105506271B (zh) 一种氩氧精炼炉还原用铬矿复合球团及其生产方法和应用
Nokhrina et al. Alloying and modification of iron-carbon melts with natural and man-made materials
RU2369639C2 (ru) Шихта для производства чугуна
KR100566595B1 (ko) 제강용 플럭스
RU2443785C1 (ru) Наполнитель порошковой проволоки для внепечной обработки металлургических расплавов
JP2004143492A (ja) 極低燐ステンレス鋼の溶製方法
RU2044061C1 (ru) Композиционная шихта для выплавки стали
RU2351678C2 (ru) Способ выплавки ферротитана
KR102282018B1 (ko) 탈산과 탈황능력 및 강의 조직을 치밀하게 하는 능력이 우수한 주강 및 제강용 복합탈산제 및 그 제조방법
RU2192479C1 (ru) Способ рафинирования и модифицирования железоуглеродистого расплава
JP4485987B2 (ja) Ｖ，Ｍｏ，及びＮｉ含有廃棄物からの有価金属の回収方法
RU2703060C1 (ru) Шихта для выплавки силикокальция
JP3705498B2 (ja) Ｖ、Ｍｏ、及びＮｉ含有廃棄物からの有価金属の回収方法
RU2456349C1 (ru) Способ внепечной обработки железоуглеродистого расплава
Zheng et al. Effect of reduction parameters on the size and morphology of the metallic particles in carbothermally reduced stainless steel dust
RU2398907C2 (ru) Способ получения высокопроцентного ферротитана
RU2374349C1 (ru) Способ выплавки ванадийсодержащих сплавов
RU2458994C1 (ru) Способ легирования чугуна марганцем
RU2395609C1 (ru) Сплав "казахстанский" для раскисления и легирования стали
RU2429302C2 (ru) Способ подготовки замасленных и незамасленных шихтовых материалов в виде офлюсованных брикетов к плавке
RU2042716C1 (ru) Шихта для выплавки шихтовой заготовки и сталей
JPH0125367B2 (fr)

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 200801032

Country of ref document: EA

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 05825106

Country of ref document: EP

Kind code of ref document: A1