GB1347785A - Method of reducing particulate metal ores - Google Patents
Method of reducing particulate metal oresInfo
- 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
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)
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.
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)
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)
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 |
-
1971
- 1971-06-30 GB GB3064371A patent/GB1347785A/en not_active Expired
- 1971-07-05 IL IL3722771A patent/IL37227A/en unknown
- 1971-07-13 DE DE2134959A patent/DE2134959C3/en not_active Expired
- 1971-07-13 AU AU31144/71A patent/AU453409B2/en not_active Expired
- 1971-07-14 BE BE769976A patent/BE769976A/en not_active IP Right Cessation
- 1971-07-14 ES ES393256A patent/ES393256A1/en not_active Expired
- 1971-07-14 AR AR23678271A patent/AR202079A1/en active
- 1971-07-15 JP JP5218571A patent/JPS5126884B1/ja active Pending
- 1971-07-15 IT IT5164871A patent/IT944683B/en active
- 1971-07-15 LU LU63538D patent/LU63538A1/xx unknown
- 1971-07-15 NL NL7109764.A patent/NL157351B/en not_active IP Right Cessation
- 1971-07-15 FR FR7125928A patent/FR2098429B1/fr not_active Expired
- 1971-07-15 CA CA118,365A patent/CA949319A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IL37227A (en) | 1974-06-30 |
NL157351B (en) | 1978-07-17 |
IL37227A0 (en) | 1971-10-20 |
CA949319A (en) | 1974-06-18 |
LU63538A1 (en) | 1972-04-04 |
ES393256A1 (en) | 1974-10-01 |
DE2134959C3 (en) | 1979-04-26 |
JPS5126884B1 (en) | 1976-08-09 |
DE2134959A1 (en) | 1972-01-27 |
NL7109764A (en) | 1972-01-18 |
DE2134959B2 (en) | 1978-09-07 |
AU453409B2 (en) | 1974-10-03 |
FR2098429A1 (en) | 1972-03-10 |
AR202079A1 (en) | 1975-05-15 |
IT944683B (en) | 1973-04-20 |
BE769976A (en) | 1972-01-14 |
FR2098429B1 (en) | 1978-09-29 |
AU3114471A (en) | 1973-01-18 |
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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 |