BR102019007542A8 - process and equipment for converting blast furnaces to auto-reduction mode - Google Patents

process and equipment for converting blast furnaces to auto-reduction mode

Info

Publication number
BR102019007542A8
BR102019007542A8 BR102019007542A BR102019007542A BR102019007542A8 BR 102019007542 A8 BR102019007542 A8 BR 102019007542A8 BR 102019007542 A BR102019007542 A BR 102019007542A BR 102019007542 A BR102019007542 A BR 102019007542A BR 102019007542 A8 BR102019007542 A8 BR 102019007542A8
Authority
BR
Brazil
Prior art keywords
blast furnaces
agglomerates
reduction
self
reducing
Prior art date
Application number
BR102019007542A
Other languages
Portuguese (pt)
Other versions
BR102019007542A2 (en
Inventor
Coassin Giovanni
Albuquerque Contrucci Marcos
Original Assignee
G Meta Consultoria Participacoes E Servicos Ltda
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 G Meta Consultoria Participacoes E Servicos Ltda filed Critical G Meta Consultoria Participacoes E Servicos Ltda
Priority to BR102019007542A priority Critical patent/BR102019007542A8/en
Priority to PCT/BR2020/050121 priority patent/WO2020206520A1/en
Publication of BR102019007542A2 publication Critical patent/BR102019007542A2/en
Publication of BR102019007542A8 publication Critical patent/BR102019007542A8/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/02—Internal forms

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

resumo processo e equipamento para conversão de altos-fornos ao modo de auto-redução a invenção converte os altos fornos atuais (1) da redução gás/sólido em auto-redução (2), reduzindo o tempo de processo de 8hs para 30 minutos. substitui-se sínter, pellets ou minério (17) por aglomerados auto-redutores (30) e coque (16) por aglomerados de carvão mineral e/ou de biomassa (29). a introdução, no interior dos altos-fornos, de dois elementos concêntricos de forma cilíndrica ou poliédrica (25) e (26), permite a formação de duas colunas verticais isoladas de carga dos aglomerados (29) e (30) que se encontram pouco acima do plano das ventaneiras (12), onde se localiza a zona de redução e fusão (32) formada pela chama (20), permitindo reduzir a altura da coluna ativa dos altos-fornos (1) e o tempo de residência da carga. os aglomerados de carvão mineral e/ou de biomassa (29) são carregados no espaço entre a carcaça (11) e o primeiro elemento (25) enquanto os aglomerados auto redutores (30) são carregados entre o primeiro (25) e o segundo elemento (26). a chama (20), regulada para favorecer geração de energia minimizando geração de gás (21), otimiza a eficiência energética. o duto (22) de saída dos gases (21) é diretamente conectado ao elemento (26).abstract process and equipment for converting blast furnaces to auto-reduction mode the invention converts the current blast furnaces (1) from gas / solid reduction to self-reduction (2), reducing the process time from 8 hours to 30 minutes. sinter, pellets or ore (17) are replaced by self-reducing agglomerates (30) and coke (16) by coal and / or biomass agglomerates (29). the introduction, inside the blast furnaces, of two concentric elements of cylindrical or polyhedral shape (25) and (26), allows the formation of two isolated vertical columns of load of the agglomerates (29) and (30) that are little above the plane of the nozzles (12), where the reduction and melting zone (32) formed by the flame (20) is located, allowing to reduce the height of the active column of the blast furnaces (1) and the residence time of the load. the coal and / or biomass agglomerates (29) are loaded in the space between the carcass (11) and the first element (25) while the self-reducing agglomerates (30) are loaded between the first (25) and the second element (26). the flame (20), regulated to favor energy generation minimizing gas generation (21), optimizes energy efficiency. the gas outlet duct (22) is directly connected to the element (26).

BR102019007542A 2019-04-12 2019-04-12 process and equipment for converting blast furnaces to auto-reduction mode BR102019007542A8 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR102019007542A BR102019007542A8 (en) 2019-04-12 2019-04-12 process and equipment for converting blast furnaces to auto-reduction mode
PCT/BR2020/050121 WO2020206520A1 (en) 2019-04-12 2020-04-07 Process and equipment for blast furnace conversion to the self-reduction mode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BR102019007542A BR102019007542A8 (en) 2019-04-12 2019-04-12 process and equipment for converting blast furnaces to auto-reduction mode

Publications (2)

Publication Number Publication Date
BR102019007542A2 BR102019007542A2 (en) 2020-10-20
BR102019007542A8 true BR102019007542A8 (en) 2021-02-02

Family

ID=72750774

Family Applications (1)

Application Number Title Priority Date Filing Date
BR102019007542A BR102019007542A8 (en) 2019-04-12 2019-04-12 process and equipment for converting blast furnaces to auto-reduction mode

Country Status (2)

Country Link
BR (1) BR102019007542A8 (en)
WO (1) WO2020206520A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648997A (en) * 1968-05-14 1972-03-14 Sumitomo Metal Ind Apparatus for the production of iron
US6800113B2 (en) * 2001-06-28 2004-10-05 Startec Iron Llc Equipment for distribution and feeding of charge and fuel in shaft furnaces of rectangular cross section
US7896963B2 (en) * 2003-09-23 2011-03-01 Hanqing Liu Self-reducing, cold-bonded pellets

Also Published As

Publication number Publication date
BR102019007542A2 (en) 2020-10-20
WO2020206520A1 (en) 2020-10-15

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Legal Events

Date Code Title Description
B03A Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]
B03H Publication of an application: rectification [chapter 3.8 patent gazette]

Free format text: REFERENTE AO CODIGO 3.1 PUBLICADO NA RPI2598 DE 20/10/2020 RELATIVO AO CAMPO INID (72) INVENTOR. CONSIDEREM-SE OS DADOS ATUAIS.

B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B04C Request for examination: application reinstated [chapter 4.3 patent gazette]
B06W Patent application suspended after preliminary examination (for patents with searches from other patent authorities) chapter 6.23 patent gazette]
B11B Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements