MX9605042A - Metodo para el uso directo de mineral de cromita en la produccion de acero inoxidable. - Google Patents

Metodo para el uso directo de mineral de cromita en la produccion de acero inoxidable.

Info

Publication number
MX9605042A
MX9605042A MX9605042A MX9605042A MX9605042A MX 9605042 A MX9605042 A MX 9605042A MX 9605042 A MX9605042 A MX 9605042A MX 9605042 A MX9605042 A MX 9605042A MX 9605042 A MX9605042 A MX 9605042A
Authority
MX
Mexico
Prior art keywords
bath
stage
carbon
oxygen
extending
Prior art date
Application number
MX9605042A
Other languages
English (en)
Other versions
MXPA96005042A (es
Inventor
David M Kundrat
Allan M Smillie
Richard C Sussman
Original Assignee
Armco Inc
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 Armco Inc filed Critical Armco Inc
Publication of MXPA96005042A publication Critical patent/MXPA96005042A/es
Publication of MX9605042A publication Critical patent/MX9605042A/es

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
    • C21C5/005—Manufacture of stainless steel
    • 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
    • C21C7/068—Decarburising
    • C21C7/0685—Decarburising of stainless steel
    • 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
    • C21C2250/00—Specific additives; Means for adding material different from burners or lances
    • C21C2250/08—Porous plug
    • 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
    • F27D3/16—Introducing a fluid jet or current into the charge
    • F27D2003/161—Introducing a fluid jet or current into the charge through a porous element
    • 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
    • F27D3/16—Introducing a fluid jet or current into the charge
    • F27D2003/162—Introducing a fluid jet or current into the charge the fluid being an oxidant or a fuel
    • F27D2003/163—Introducing a fluid jet or current into the charge the fluid being an oxidant or a fuel the fluid being an oxidant
    • F27D2003/164—Oxygen
    • 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
    • F27D27/00—Stirring devices for molten material
    • F27D2027/002—Gas stirring

Landscapes

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

Abstract

Un proceso de tres etapas para obtener unidades de Cr metálico insitu durante la produccion de acero inoxidable. El mineral de cromita crudo o un concentrado producido a partir del mineral de cromita se mezcla con un reductor carbonáceo y agentes escorificantes y son puestos en un baño de fierro para fundirse y refinarse en un reactor de refinacion. Durante la primera etapa, la cromita parcialmente metalizada se funde con carbon en el reactor que es soplado arriba y abajo con gas oxígeno y gas conteniendo oxígeno, respectivamente, para producir un baño de aleacion de cromo teniendo un contenido de carbon muy por debajo de la saturacion. En la segunda etapa, el baño de la aleacion se descarburiza por agitacion en la parte inferior con gas conteniendo oxígeno a la especificacion de carbon final del baño. En la tercera etapa, el baño de la aleacion se reduce por un reductor metaloide tal como el silicio o aluminio y nuevamente se agita en la parte inferior pero con un gas no oxidante para alcanzar un alto rendimiento de cromo. El reactor incluye una lanceta superior extendida a través de la garganta con una porcion más baja de la lanceta extendida hasta el punto justo arriba del baño y los medios tales como las toberas o tapon poroso montado en el fondo o cerca del mismo y extendida a través de una recubierta refractaria para agitar el baño de fierro conteniendo carbon disuelto.
MX9605042A 1995-12-14 1996-10-23 Metodo para el uso directo de mineral de cromita en la produccion de acero inoxidable. MX9605042A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/573,316 US5702502A (en) 1995-12-14 1995-12-14 Method for direct use of chromite ore in the production of stainless steel
US08573316 1995-12-14

Publications (2)

Publication Number Publication Date
MXPA96005042A MXPA96005042A (es) 1997-06-01
MX9605042A true MX9605042A (es) 1997-06-28

Family

ID=24291481

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9605042A MX9605042A (es) 1995-12-14 1996-10-23 Metodo para el uso directo de mineral de cromita en la produccion de acero inoxidable.

Country Status (16)

Country Link
US (1) US5702502A (es)
EP (1) EP0779373B1 (es)
JP (1) JP2865639B2 (es)
KR (1) KR970043113A (es)
CN (1) CN1046968C (es)
AT (1) ATE234942T1 (es)
AU (1) AU702699B2 (es)
BR (1) BR9603943A (es)
CA (1) CA2184317A1 (es)
DE (1) DE69626760T2 (es)
ES (1) ES2189850T3 (es)
IN (1) IN190534B (es)
MX (1) MX9605042A (es)
TR (1) TR199601015A2 (es)
TW (1) TW334478B (es)
ZA (1) ZA967598B (es)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6245289B1 (en) 1996-04-24 2001-06-12 J & L Fiber Services, Inc. Stainless steel alloy for pulp refiner plate
JPH09310126A (ja) * 1996-05-16 1997-12-02 Daido Steel Co Ltd 金属酸化物から金属を得る製造方法
JP3721154B2 (ja) * 2002-10-18 2005-11-30 新日本製鐵株式会社 クロム含有溶湯の精錬方法
KR100887859B1 (ko) * 2002-11-07 2009-03-09 주식회사 포스코 크롬 광석의 직접환원을 통한 스테인레스강 제조방법
DE10317195B4 (de) * 2003-04-15 2006-03-16 Karl Brotzmann Consulting Gmbh Verfahren zur Verbesserung der Energiezufuhr in ein Schrotthaufwerk
US7648933B2 (en) 2006-01-13 2010-01-19 Dynamic Abrasives Llc Composition comprising spinel crystals, glass, and calcium iron silicate
US7637984B2 (en) * 2006-09-29 2009-12-29 Uop Llc Integrated separation and purification process
US8323558B2 (en) * 2009-11-30 2012-12-04 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dynamic control of lance utilizing counterflow fluidic techniques
US8377372B2 (en) * 2009-11-30 2013-02-19 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dynamic lances utilizing fluidic techniques
CN102485918B (zh) * 2010-12-04 2013-09-25 山西太钢不锈钢股份有限公司 一种顶底复吹转炉冶炼不锈钢的方法
CN105154622A (zh) * 2015-10-14 2015-12-16 华北理工大学 转炉炼钢吹炼复合氧化剂
CN105443873A (zh) * 2015-12-22 2016-03-30 唐艺峰 一种不锈钢管及其制备方法
EP3601625B1 (en) * 2017-03-21 2021-05-19 Brother Group (Hong Kong) Limited Process for preparing iron- and chrome-containing particles
CN108893668A (zh) * 2018-08-01 2018-11-27 中冶东方工程技术有限公司 铁素体不锈钢的生产方法
CN111208259B (zh) * 2018-11-06 2022-03-22 宝武特种冶金有限公司 一种连铸结晶器保护渣的渣金反应模拟试验装置及其方法
CN109735676B (zh) * 2019-03-19 2020-11-24 山西太钢不锈钢股份有限公司 一种低磷含铬铁水的生产方法
JP7243861B2 (ja) * 2020-09-10 2023-03-22 Ｊｆｅスチール株式会社 含クロム溶鉄の製造方法
EP4056720A1 (de) * 2021-03-08 2022-09-14 SMS Group GmbH Verfahren zum herstellen einer ferrolegierung mit niedrigem kohlenstoffgehalt

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8104474A (nl) * 1981-10-01 1983-05-02 Estel Hoogovens Bv Vloeistofgekoelde lans voor het blazen van zuurstof op een staalbad.
JPS58117852A (ja) * 1981-12-29 1983-07-13 Sumitomo Metal Ind Ltd フエロクロム製造方法及び装置
DE3230013C2 (de) * 1982-08-12 1985-07-25 Krupp Stahl Ag, 4630 Bochum Verfahren und Vorrichtung zur Erschmelzung von Chrom-Nickel-Stählen
US4572747A (en) * 1984-02-02 1986-02-25 Armco Inc. Method of producing boron alloy
US4565574A (en) * 1984-11-19 1986-01-21 Nippon Steel Corporation Process for production of high-chromium alloy by smelting reduction
US4961784A (en) * 1987-08-13 1990-10-09 Nkk Corporation Method of smelting reduction of chromium raw materials and a smelting reduction furnace thereof
JPS6455360A (en) * 1987-08-26 1989-03-02 Sumitomo Metal Ind Smelting reduction process for chromitite
JPH01215912A (ja) * 1988-02-24 1989-08-29 Kawasaki Steel Corp 含クロム溶鉄の製造方法
DE69010901T2 (de) * 1989-06-02 1994-11-24 Cra Services Herstellung von ferrolegierung in einem schmelzbadreaktor.
US5609669A (en) * 1993-11-22 1997-03-11 Brunner; Mikael Method of manufacturing stainless steel
US5567224A (en) * 1995-06-06 1996-10-22 Armco Inc. Method of reducing metal oxide in a rotary hearth furnace heated by an oxidizing flame
JP3165913B2 (ja) * 1997-08-28 2001-05-14 住友重機械工業株式会社 磁場分布測定装置

Also Published As

Publication number Publication date
BR9603943A (pt) 1998-06-09
EP0779373A1 (en) 1997-06-18
IN190534B (es) 2003-08-09
JPH09176723A (ja) 1997-07-08
TR199601015A3 (es) 1997-07-21
DE69626760T2 (de) 2004-02-05
CA2184317A1 (en) 1997-06-15
ZA967598B (en) 1997-03-26
TR199601015A2 (tr) 1997-07-21
ES2189850T3 (es) 2003-07-16
DE69626760D1 (de) 2003-04-24
AU7415796A (en) 1997-06-19
CN1167837A (zh) 1997-12-17
US5702502A (en) 1997-12-30
EP0779373B1 (en) 2003-03-19
JP2865639B2 (ja) 1999-03-08
CN1046968C (zh) 1999-12-01
TW334478B (en) 1998-06-21
AU702699B2 (en) 1999-03-04
ATE234942T1 (de) 2003-04-15
KR970043113A (ko) 1997-07-26

Similar Documents

Publication Publication Date Title
MX9605042A (es) Metodo para el uso directo de mineral de cromita en la produccion de acero inoxidable.
TW223661B (es)
JPS54158320A (en) Refining method for high chromium steel
AU569412B2 (en) Conversion of low-manganese molten iron to low-phosphorus molten steel
CN1071708A (zh) 钒渣炉内直接合金化工艺
AU7248387A (en) Method for manufacturing steel through smelting reduction
EP0160376A2 (en) Method for producing steel in a top oxygen blown vessel
JPS56130416A (en) Steel making method
SU885292A1 (ru) Способ выплавки стали
JPS6455360A (en) Smelting reduction process for chromitite
JPH01252715A (ja) 鉄浴式溶融還元炉の操業方法
KR100264996B1 (ko) 탈린용선을 이용한 전로 정련조업방법
Bogdandy et al. 35 Years LD-Process-Developments, Results, and Future Trends in Oxygen-Blowing Steel Production
US20050166710A1 (en) Method for treating alloyed carbonic iron smelts used for the production of steel
JPS61253311A (ja) クロム鉱石の溶融還元法
JPH01168806A (ja) 含クロム溶鉄の製造法
JPS6447805A (en) Production of silicon-containing cast iron
Stickler Variants of the Elred Process
Andreini et al. Process to Produce Low-Hydrogen Steel
JPS572812A (en) Production of slag reduced stainless steel
Bogdandy et al. Production of Gas in a Ferrous-Bath-Reactor
Scetti et al. Operating and Metallurgical Results of a Secondary Steelmaking Plant for the Production of High-Quality Steels
Kuwabara et al. Production of Ferrochrome by Smelting Reduction in a Stirred Bath. III. Smelting Reduction of 20% Chromium Molten Iron With 650 kg Top and Bottom Blowing Converter.(Synopsis)
JPS6439315A (en) Steel refining method
JPS5729516A (en) Top-blown oxygen steelmaking method