JPS5641306A - Iron making method by direct reduction of iron oxide - Google Patents
Iron making method by direct reduction of iron oxideInfo
- Publication number
- JPS5641306A JPS5641306A JP11680180A JP11680180A JPS5641306A JP S5641306 A JPS5641306 A JP S5641306A JP 11680180 A JP11680180 A JP 11680180A JP 11680180 A JP11680180 A JP 11680180A JP S5641306 A JPS5641306 A JP S5641306A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- furnace
- mixed
- reformed
- reforming
- 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.)
- Granted
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
- C21B13/02—Making spongy iron or liquid steel, by direct processes in 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
- C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
- C21B2100/26—Increasing the gas reduction potential of recycled exhaust gases by adding additional fuel in recirculation pipes
-
- 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
- C21B2100/66—Heat exchange
-
- 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 Of Iron (AREA)
Abstract
PURPOSE:To prevent the deposition of solid carbon during reforming reaction, and to utilize the sensible heat of high temp. reformed gas effectively in the reforming of CH4 in order to manufacture reducing gas for making iron by direct reduction, by using a portion of CH4 together with exhaust gas of the reducing furnace. CONSTITUTION:Natural gas contg. principally CH4 is reformed to product reducing gas composed of CO and H2 and is introduced into a vertical reduction furnace 1 for reducing iron ore in solid phase. The high temp. exhaust gas (a) discharged from the reduction furnace 1 is removed from dust and moisture by a scrubber 4. Then the gas is divided into two portions, one of which is used as fuel for the reforming furnace 2 and a heating furnace 3, the other portion (b') is mixed with a portion (c) of the natural gas 5 to form a mixed gas (d) and is charged to the reforming furnace 2. The high temp. reformed gas (e) is mixed with natural gas (g) having been heated in the heating furnace 3, thereby the partial pressure of CH4 of the mixed gas is decreased, and CH4 is reformed by an after reactor 6 with its own retained heat while restraining the deposition of solid carbon. At the same time, the mixed gas is maintained at a suitable temp. for reduction furnace by controlling the temp. through cooling with endothermic reaction, and is charged to the vertical reduction furnace 1.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55116801A JPS602362B2 (en) | 1980-08-25 | 1980-08-25 | Iron oxide direct reduction method |
AR282462A AR222720A1 (en) | 1980-08-25 | 1980-09-09 | DIRECT REDUCTION PROCEDURE TO PRODUCE METAL IRON |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55116801A JPS602362B2 (en) | 1980-08-25 | 1980-08-25 | Iron oxide direct reduction method |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54116381 Division |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5641306A true JPS5641306A (en) | 1981-04-18 |
JPS602362B2 JPS602362B2 (en) | 1985-01-21 |
Family
ID=14695997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55116801A Expired JPS602362B2 (en) | 1980-08-25 | 1980-08-25 | Iron oxide direct reduction method |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS602362B2 (en) |
AR (1) | AR222720A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2467884A1 (en) * | 1979-10-22 | 1981-04-30 | Midrex Corp | PROCESS AND APPARATUS FOR THE DIRECT REDUCTION OF IRON OXIDE IN METAL IRON USING A GAS WITH HIGH SULFUR CONTENT |
JPS5767108A (en) * | 1980-10-13 | 1982-04-23 | Hitachi Metals Ltd | Method and device for controlling temperature of circulating reducing gas in sponge iron producing apparatus |
CN100451133C (en) * | 2005-09-15 | 2009-01-14 | 中冶东方工程技术有限公司 | Method and apparatus for producing directly reduced iron with coke oven gas |
CN106834579A (en) * | 2017-03-03 | 2017-06-13 | 江苏省冶金设计院有限公司 | The system and method that a kind of natural gas tri-reforming prepares DRI |
-
1980
- 1980-08-25 JP JP55116801A patent/JPS602362B2/en not_active Expired
- 1980-09-09 AR AR282462A patent/AR222720A1/en active
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2467884A1 (en) * | 1979-10-22 | 1981-04-30 | Midrex Corp | PROCESS AND APPARATUS FOR THE DIRECT REDUCTION OF IRON OXIDE IN METAL IRON USING A GAS WITH HIGH SULFUR CONTENT |
JPS5767108A (en) * | 1980-10-13 | 1982-04-23 | Hitachi Metals Ltd | Method and device for controlling temperature of circulating reducing gas in sponge iron producing apparatus |
JPS582562B2 (en) * | 1980-10-13 | 1983-01-17 | 日立金属株式会社 | Temperature adjustment method and device for circulating reducing gas in sponge iron production equipment |
CN100451133C (en) * | 2005-09-15 | 2009-01-14 | 中冶东方工程技术有限公司 | Method and apparatus for producing directly reduced iron with coke oven gas |
CN106834579A (en) * | 2017-03-03 | 2017-06-13 | 江苏省冶金设计院有限公司 | The system and method that a kind of natural gas tri-reforming prepares DRI |
Also Published As
Publication number | Publication date |
---|---|
JPS602362B2 (en) | 1985-01-21 |
AR222720A1 (en) | 1981-06-15 |
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