GB1335247A - Process for the reduction of iron ores - Google Patents

Process for the reduction of iron ores

Info

Publication number
GB1335247A
GB1335247A GB2560971*A GB2560971A GB1335247A GB 1335247 A GB1335247 A GB 1335247A GB 2560971 A GB2560971 A GB 2560971A GB 1335247 A GB1335247 A GB 1335247A
Authority
GB
United Kingdom
Prior art keywords
furnace
tuyþres
injected
gas
reduction
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.)
Expired
Application number
GB2560971*A
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.)
METALLURGIE IND RES
Centre de Recherches Metallurgiques CRM ASBL
Original Assignee
METALLURGIE IND RES
Centre de Recherches Metallurgiques CRM ASBL
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 METALLURGIE IND RES, Centre de Recherches Metallurgiques CRM ASBL filed Critical METALLURGIE IND RES
Publication of GB1335247A publication Critical patent/GB1335247A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • C21B5/002—Heated electrically (plasma)
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • 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
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]

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

1335247 Reduction of iron ore CENTRE DE RECHERCHES METALLURGIQUES-CENTRUM VOOR RESEARCH IN DE METALLURGIE 19 April 1971 [31 March 1970(2) 7 April 1970 10 April 1970 30 June 1970 10 July 1970 9 Sept 1970 14 Oct 1970 and 30 Oct 1970] 25609/71 Heading C7D [Also in Division F4] In a process for the reduction of iron-ore in a blast furnace, hot reducing gas is injected into the furnace above the level of the tuyÞres whilst a reducing agent is injected at approximately the level of the tuyÞres. The reducing gas, which is pre-heated to 1000‹C.-1400‹C., is preferably a hydrocarbon gas partially oxidized or catalytically cracked to produce a mixture of CO and H 2 . Scrubbed furnace top gas or coke oven gas may be used. The reducing agents comprise materials containing carbon and/or hydrogen, for example, coal-oil slurry or hydrocarbons of various types. They are pre-heated to 1700‹C.- 2400‹C. During the reduction of the ore the furnace temperature may be controlled by further additions. To lower the temperature a cooler reducing agent may be added or to raise the temperature an oxidizing agent may be injected in the region above the tuyÞres. In an example, natural gas is catalyzed to produce a mixture of CO and H 2 , it is pre-heated then introduced into a furnace in the region above the tuyÞres. Simultaneously, fuel oil is injected into the furnace at the level of the tuyÞres. The injection nozzle comprises a metal casing having a cylindrical body 1 and a flange 2 fastening the nozzle to the furnace wall 7. An internal refractory lining 3 has a central passage 4 of circular cross-section and having a constriction 5 near its outlet end. The nozzle may have longitudinal notches to improve its elasticity. There may be a water cooling chamber near the tip of the nozzle.
GB2560971*A 1970-03-31 1971-04-19 Process for the reduction of iron ores Expired GB1335247A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE748274 1970-03-31

Publications (1)

Publication Number Publication Date
GB1335247A true GB1335247A (en) 1973-10-24

Family

ID=3856306

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2560971*A Expired GB1335247A (en) 1970-03-31 1971-04-19 Process for the reduction of iron ores

Country Status (2)

Country Link
BE (1) BE748274A (en)
GB (1) GB1335247A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131455A (en) * 1982-12-08 1984-06-20 British Steel Corp Improvements in or relating to the production of iron in a blast furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131455A (en) * 1982-12-08 1984-06-20 British Steel Corp Improvements in or relating to the production of iron in a blast furnace

Also Published As

Publication number Publication date
BE748274A (en) 1970-09-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee