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GB1347785A - Method of reducing particulate metal ores - Google Patents

Method of reducing particulate metal ores

Info

Publication number
GB1347785A
GB1347785A GB3064371A GB3064371A GB1347785A GB 1347785 A GB1347785 A GB 1347785A GB 3064371 A GB3064371 A GB 3064371A GB 3064371 A GB3064371 A GB 3064371A GB 1347785 A GB1347785 A GB 1347785A
Authority
GB
United Kingdom
Prior art keywords
zone
cooling gas
cooling
reducing
gas
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
GB3064371A
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.)
Fierro Esponja SA
Original Assignee
Fierro Esponja SA
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 Fierro Esponja SA filed Critical Fierro Esponja SA
Publication of GB1347785A publication Critical patent/GB1347785A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0073—Selection or treatment of the reducing gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
    • C21B13/029—Introducing coolant gas in the shaft furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C21B2100/22—Increasing the gas reduction potential of recycled exhaust gases by reforming
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/64—Controlling the physical properties of the gas, e.g. pressure or temperature
    • 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
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen

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)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Manufacture Of Iron (AREA)

Abstract

1347785 Reducing particulate ores FIERRO ESPONJA SA 30 June 1971 [15 July 1970 16 Dec 1970] 30643/71 Heading C7D The ore forms a downwardly moving bed in a vertical shaft incorporating an upper reduction zone and a lower cooling zone; hot reducing gas is passed through the former while cooling gas is circulated in a closed loop through the cooling zone and a cooler, the pressure differential between the bottom of the reducing zone and the top of the cooling zone being maintained substantially at zero by regulating the venting of cooling gas from the cycle. In a particular embodiment, a reducing gas stream produced in reformer 32 heated by heat exchanger 46, coil heater 48, and by partial combustion, is introduced into reduction zone 12 of reactor 10 through plenum chamber 24, and withdrawn through line 32, cooling gas introduced to zone 14 through plenum chamber 28 is withdrawn through line 94 and recycled through heat exchanger 46 and quench cooler 100. The pressure differential P 1 - P 2 is sensed by unit 120 which either causes controller 126 to adjust the back pressure in diverted cooling gas line 104, or Fig. 2 causes flow controller 402 to adjust the flow rate of diverted cooling gas in relation to that of incoming fresh cooling gas.
GB3064371A 1970-07-15 1971-06-30 Method of reducing particulate metal ores Expired GB1347785A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5516170A 1970-07-15 1970-07-15
US9861270A 1970-12-16 1970-12-16

Publications (1)

Publication Number Publication Date
GB1347785A true GB1347785A (en) 1974-02-27

Family

ID=26733913

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3064371A Expired GB1347785A (en) 1970-07-15 1971-06-30 Method of reducing particulate metal ores

Country Status (13)

Country Link
JP (1) JPS5126884B1 (en)
AR (1) AR202079A1 (en)
AU (1) AU453409B2 (en)
BE (1) BE769976A (en)
CA (1) CA949319A (en)
DE (1) DE2134959C3 (en)
ES (1) ES393256A1 (en)
FR (1) FR2098429B1 (en)
GB (1) GB1347785A (en)
IL (1) IL37227A (en)
IT (1) IT944683B (en)
LU (1) LU63538A1 (en)
NL (1) NL157351B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890142A (en) * 1973-10-16 1975-06-17 Fierro Esponja Method for gaseous reduction of metal ores
AU496945B2 (en) * 1975-05-19 1978-11-16 Midrex International B.V. Rotterdam Producing metallized product
US4224057A (en) * 1979-08-20 1980-09-23 Hylsa, S.A. Method for carburizing sponge iron
US4338123A (en) * 1981-02-23 1982-07-06 Hylsa, S.A. Method and apparatus for the reduction of metal ores
US5064467A (en) * 1987-11-02 1991-11-12 C.V.G. Siderurgica Del Orinoco, C.A. Method and apparatus for the direct reduction of iron
CA2090906A1 (en) * 1992-03-05 1993-09-06 Corporacion Venezolana De Guayana (Cvg) Method for improving quality of reforming gas used in the direct reduction of metal oxides

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966459C (en) * 1952-06-29 1957-08-08 Paul Hahnel Dr Ing Process for the oxidizing and reducing treatment of oxidic ores in shaft furnaces

Also Published As

Publication number Publication date
DE2134959B2 (en) 1978-09-07
NL157351B (en) 1978-07-17
JPS5126884B1 (en) 1976-08-09
FR2098429B1 (en) 1978-09-29
LU63538A1 (en) 1972-04-04
DE2134959A1 (en) 1972-01-27
IL37227A0 (en) 1971-10-20
FR2098429A1 (en) 1972-03-10
AU3114471A (en) 1973-01-18
BE769976A (en) 1972-01-14
IL37227A (en) 1974-06-30
NL7109764A (en) 1972-01-18
CA949319A (en) 1974-06-18
ES393256A1 (en) 1974-10-01
DE2134959C3 (en) 1979-04-26
AR202079A1 (en) 1975-05-15
AU453409B2 (en) 1974-10-03
IT944683B (en) 1973-04-20

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
429A Application made for amendment of specification (sect. 29/1949)
414A Case decided by the comptroller ** specification amended (sect. 14/1949)
429H Application (made) for amendment of specification now open to opposition (sect. 29/1949)
429D Case decided by the comptroller ** specification amended (sect. 29/1949)
PS Patent sealed [section 19, patents act 1949]
SP Amendment (slips) printed
PCNP Patent ceased through non-payment of renewal fee