WO2008014579A1 - Procédé d'injection de caoutchouc granulé dans des hauts fourneaux - Google Patents

Procédé d'injection de caoutchouc granulé dans des hauts fourneaux Download PDF

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Publication number
WO2008014579A1
WO2008014579A1 PCT/BR2007/000201 BR2007000201W WO2008014579A1 WO 2008014579 A1 WO2008014579 A1 WO 2008014579A1 BR 2007000201 W BR2007000201 W BR 2007000201W WO 2008014579 A1 WO2008014579 A1 WO 2008014579A1
Authority
WO
WIPO (PCT)
Prior art keywords
rubber
blast furnaces
granulated rubber
injection process
injection
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/BR2007/000201
Other languages
English (en)
Inventor
Marcio Azevedo De Oliveira
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siderurgica De Tubara0 Cia
Original Assignee
Siderurgica De Tubara0 Cia
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 Siderurgica De Tubara0 Cia filed Critical Siderurgica De Tubara0 Cia
Publication of WO2008014579A1 publication Critical patent/WO2008014579A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
    • C21B5/023—Injection of the additives into the melting part
    • C21B5/026—Injection of the additives into the melting part of plastic material
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2200/00—Recycling of non-gaseous waste material
    • 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
    • C21C7/0025—Adding carbon material
    • C21C2007/0031—Adding carbon material being plastics, organic compounds, polymers
    • 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 present invention refers to the process of injection of granulated rubber into blast furnaces (figure 01), which provides the utilization of rubber products (1.1) as thermo reduction, injecting it through the tuyeres (2.1) into blasts furnaces (figure 03).
  • the rubber products will be able to substitute the traditional solid fuel such mineral coal, coke and anthracite.
  • the acknowledged fuels utilized for this process are: mineral coal and/or natural gas, or even pitch to inject it through the tuyeres (2.1) into blast furnaces (figure 03). These fuels are natural resources, being necessary its extractions and betterment, which has an expensive operational costs. According to Kyoto Protocol, the process of burning these fuels is prejudicial to the environment, for the reason that it expels gases such carbon monoxide, carbon dioxide, sulphur compound and other negative effects.
  • FIGURE 01 Schematized drawing of the installation and betterment (1.2) and granulated rubber injection (1.1).
  • FIGURE 02 Schematized drawing of the pulverized rubber injection into blast furnaces.
  • FIGURE 03 Schematized drawing of the blast furnace and its internal areas.
  • the production process of cast iron which the granulated rubber will add value on it, consists basically in put into the oven metallic material such scrap, iron ore, sinter, pellet etc, melting materials (quartz, calcareous) and reductive agent (coke, coal/ pulverized anthracite).
  • FeO + H2 Fe + H2O Reduction by solid carbon: (direct reduction - endothermic)
  • the blown air through the tuyeres reacts with the reductive agents, producing reductive gases, which are responsible for the heat creation and metallic material reduction.
  • the utilization of rubber grains as an alternative source agent and powerful substitute for the recent used resources is a decision that has a strong possibility to acquire carbon credits according to Kyoto Protocol terms.
  • the existing carbon that is found in the rubber would be transformed in CO2 due to its burning.
  • the gas emission would be proportional to the reduction power decurrently to the presence of hydrogen in the rubber composition, in substitution to the carbon portion that would be necessary.
  • the utilization of granulated rubber into blast furnaces must have the grain measurement (granulometry) specification suitable to the equipment to be used for the injection, and it must be processed in order to have an acceptable grain measurement (granulometry) for each type of blast furnace.
  • the process starts by cutting and triturating the rubber.
  • the tire steel and rubber are separated.
  • the steel is sent to the steel mill where it will be consumed as scrap in the LD process.
  • the rubber will be sent to the grinder.
  • the rubber After finishing the grinding process, the rubber must be stored in a silo, which stores the raw material that
  • the process of granulated rubber injection into blast furnaces presents an economic and environmental character, due to tire recycling process, making good use of 100% of the raw material and earning financial credits with its commercialization. Moreover, it will accumulate credits with Kyoto Protocol through the reduction of harmful gases to the environment.
  • the granulated rubber replaces perfectly the reductive fuels applied into blast furnaces. Therefore, the rubber products will be able to substitute the traditional solid fuel already in use such mineral coal, coke and anthracite because of its suitable application.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Manufacture Of Iron (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

L'invention concerne un procédé d'utilisation de produits caoutchoutés, en tant que combustibles de thermoréduction, qui sont injectés par les tuyères dans des hauts fourneaux en remplacement des traditionnels combustibles solides tels que le coke, le charbon de terre et l'anthracite. Ce procédé a pour but de faciliter le procédé de recyclage et de diminuer l'émission de gaz nocifs sur la planète. Il s'appliquera donc en faveur des règles du protocole de Kyoto afin de protéger la planète.
PCT/BR2007/000201 2006-08-03 2007-07-27 Procédé d'injection de caoutchouc granulé dans des hauts fourneaux Ceased WO2008014579A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI0606068-4A BRPI0606068A (pt) 2006-08-03 2006-08-03 processo de injeção de borracha granulada nos altos fornos
BRPI0606068 2006-08-03

Publications (1)

Publication Number Publication Date
WO2008014579A1 true WO2008014579A1 (fr) 2008-02-07

Family

ID=38996803

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2007/000201 Ceased WO2008014579A1 (fr) 2006-08-03 2007-07-27 Procédé d'injection de caoutchouc granulé dans des hauts fourneaux

Country Status (2)

Country Link
BR (1) BRPI0606068A (fr)
WO (1) WO2008014579A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2935544A1 (de) * 1979-09-03 1981-03-19 Fritz Dr.Rer.Nat. 7889 Grenzach Mindermann Herstellung von eisen aus eisenoxyd mit belebtschlamm (klaerschlamm) und bzw. o.a. kohlenstoffhaltigen abfallstoffen
EP1013778A1 (fr) * 1998-12-22 2000-06-28 Der Grüne Punkt-Duales System Deutschland Aktiengesellschaft Procédé et installation pour la production de métal à partir de minerais métalliques

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2935544A1 (de) * 1979-09-03 1981-03-19 Fritz Dr.Rer.Nat. 7889 Grenzach Mindermann Herstellung von eisen aus eisenoxyd mit belebtschlamm (klaerschlamm) und bzw. o.a. kohlenstoffhaltigen abfallstoffen
EP1013778A1 (fr) * 1998-12-22 2000-06-28 Der Grüne Punkt-Duales System Deutschland Aktiengesellschaft Procédé et installation pour la production de métal à partir de minerais métalliques

Also Published As

Publication number Publication date
BRPI0606068A (pt) 2008-04-01

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