BR0004443A - Concomitant process of energy supply and thermal insulation for the liquid metal bath - Google Patents

Concomitant process of energy supply and thermal insulation for the liquid metal bath

Info

Publication number
BR0004443A
BR0004443A BR0004443A BR0004443A BR0004443A BR 0004443 A BR0004443 A BR 0004443A BR 0004443 A BR0004443 A BR 0004443A BR 0004443 A BR0004443 A BR 0004443A BR 0004443 A BR0004443 A BR 0004443A
Authority
BR
Brazil
Prior art keywords
liquid metal
pig iron
energy
steel
loss
Prior art date
Application number
BR0004443A
Other languages
Portuguese (pt)
Inventor
Helio Jose Da Silva
Lupercio Tarcisio De Oliveira
Paolo Giuseppe Comini
Original Assignee
Helio J Da Silva
Lupercio Tarcisio Da Silva
Paolo Giuseppe Comini
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 Helio J Da Silva, Lupercio Tarcisio Da Silva, Paolo Giuseppe Comini filed Critical Helio J Da Silva
Priority to BR0004443A priority Critical patent/BR0004443A/en
Priority to PCT/BR2001/000134 priority patent/WO2002020853A1/en
Priority to AU2001295306A priority patent/AU2001295306A1/en
Publication of BR0004443A publication Critical patent/BR0004443A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/06—Ingot moulds or their manufacture
    • B22D7/10—Hot tops therefor
    • B22D7/104—Hot tops therefor from exothermic material only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/111—Treating the molten metal by using protecting powders
    • 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
    • C21C7/005—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using exothermic reaction compositions
    • 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
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/244—Binding; Briquetting ; Granulating with binders organic
    • C22B1/245—Binding; Briquetting ; Granulating with binders organic with carbonaceous material for the production of coked agglomerates
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

"PROCESSO CONCOMITANTE DE APORTE DE ENERGIA E DE ISOLAçãO TéRMICA PARA O BANHO DE METAL LìQUIDO". Esta invenção se refere a um processo de fornecimento de energia em uma primeira etapa para, em seguida, funcionar como um isolante térmico na superfície de banhos metálicos como gusa, aço, etc. Nas siderurgias integradas, o gusa líquido, após o vazamento nos altos fornos, é transportado em carros-torpedos para a aciaria onde passará por diversos tratamentos. Durante toda essa movimentação, tanto o gusa quanto o aço perde grande quantidade de calor. Essa perda de calor afeta negativamente os tratamentos do gusa e do aço. Para evitar essa perda as usinas recorrem a dois tipos de procedimento. Um deles consiste na utilização de palha de arroz, que é jogada na superfície do banho, formando uma camada que vai sendo queimada, gerando energia e conseq³entemente mantendo a temperatura do metal líquido. O outro procedimento, cada vez mais em uso, consiste em elevar a temperatura da corrida do alto forno para compensar a perda de energia durante a mobilização do metal líquido. Reconhecendo a importância que representa a redução dos custos industriais, bem como o encontro de soluções para a reaproveitamento de rejeitos das usinas, idealizamos um novo processo que, além de superar os inconvenientes dos processos atualmente utilizados, é economicamente viável e representar uma contribuição para diminuir a poluição ambiental."CONCOMITING PROCESS OF ENERGY SUPPORT AND THERMAL INSULATION FOR LIQUID METAL BATH". This invention relates to a process of supplying energy in a first step to then function as a thermal insulator on the surface of metal baths such as pig iron, steel, etc. In the integrated steelworks, the liquid pig iron, after leaking in the blast furnaces, is transported in torpedo cars to the melt shop where it will undergo various treatments. During all this movement, both pig iron and steel lose a large amount of heat. This heat loss negatively affects pig iron and steel treatments. To avoid this loss, mills resort to two types of procedures. One of them is the use of rice straw, which is thrown on the surface of the bath, forming a layer that is burned, generating energy and, consequently, maintaining the temperature of the liquid metal. The other procedure, increasingly in use, is to raise the temperature of the blast furnace run to compensate for the loss of energy during the mobilization of the liquid metal. Recognizing the importance of reducing industrial costs, as well as finding solutions for the reuse of waste from plants, we devised a new process that, in addition to overcoming the drawbacks of the processes currently used, is economically viable and represents a contribution to reduce environmental pollution.

BR0004443A 2000-09-11 2000-09-11 Concomitant process of energy supply and thermal insulation for the liquid metal bath BR0004443A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BR0004443A BR0004443A (en) 2000-09-11 2000-09-11 Concomitant process of energy supply and thermal insulation for the liquid metal bath
PCT/BR2001/000134 WO2002020853A1 (en) 2000-09-11 2001-09-10 Process to provide concurrently both energy and heat insulation for the liquid metal bath
AU2001295306A AU2001295306A1 (en) 2000-09-11 2001-09-10 Process to provide concurrently both energy and heat insulation for the liquid metal bath

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BR0004443A BR0004443A (en) 2000-09-11 2000-09-11 Concomitant process of energy supply and thermal insulation for the liquid metal bath

Publications (1)

Publication Number Publication Date
BR0004443A true BR0004443A (en) 2002-04-23

Family

ID=3945343

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0004443A BR0004443A (en) 2000-09-11 2000-09-11 Concomitant process of energy supply and thermal insulation for the liquid metal bath

Country Status (3)

Country Link
AU (1) AU2001295306A1 (en)
BR (1) BR0004443A (en)
WO (1) WO2002020853A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MC1284A1 (en) * 1979-06-11 1980-07-22 Daussan & Co GRANULAR INSULATING PRODUCT AND ITS PREPARATION METHOD
DE3727619C1 (en) * 1987-08-19 1988-11-24 Hagenburger Chamotte Ton Covering composition for vessels containing molten steel
FR2633481B1 (en) * 1988-06-22 1996-04-26 Seb Sa METHOD FOR THERMAL REGULATION OF A HEATER, DEVICE FOR IMPLEMENTING SAME AND HEATER COMPRISING THE SAME
US5073281A (en) * 1989-05-08 1991-12-17 Paules John R Pelletized rice hull ash and bentonite clay insulation
DD298217A5 (en) * 1989-07-10 1992-02-13 Veb Maxhuette Unterwellenborn,De GRANULATED COVER MATERIAL FOR METAL MELTS
GB9108889D0 (en) * 1991-04-25 1991-06-12 Foseco Int Metallurgical fluxes
DE4215169A1 (en) * 1992-05-08 1993-11-11 Veitscher Magnesitwerke Ag Protective non-sintering cover for smelting process - consists of caustic magnesia plus additive in pelletised or granular form, giving good thermal isolation from and protection against oxidn. to the molten metal e.g. steel

Also Published As

Publication number Publication date
AU2001295306A1 (en) 2002-03-22
WO2002020853A1 (en) 2002-03-14

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal acc. article 33 of ipl - extension of time limit for request of examination expired