FR2117949A1 - Pig iron blast furnace uses minimum coke - with electrode and fuel gas assisted heating - Google Patents
Pig iron blast furnace uses minimum coke - with electrode and fuel gas assisted heatingInfo
- Publication number
- FR2117949A1 FR2117949A1 FR7144064A FR7144064A FR2117949A1 FR 2117949 A1 FR2117949 A1 FR 2117949A1 FR 7144064 A FR7144064 A FR 7144064A FR 7144064 A FR7144064 A FR 7144064A FR 2117949 A1 FR2117949 A1 FR 2117949A1
- Authority
- FR
- France
- Prior art keywords
- fuel gas
- blast furnace
- electrode
- furnace
- pig iron
- 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
- 239000000571 coke Substances 0.000 title abstract 2
- 239000002737 fuel gas Substances 0.000 title abstract 2
- 229910000805 Pig iron Inorganic materials 0.000 title 1
- 238000010438 heat treatment Methods 0.000 title 1
- 239000007789 gas Substances 0.000 abstract 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- 235000019738 Limestone Nutrition 0.000 abstract 1
- 239000003546 flue gas Substances 0.000 abstract 1
- 239000000446 fuel Substances 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
- 239000006028 limestone Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000002893 slag Substances 0.000 abstract 1
- 238000009827 uniform distribution Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/06—Making pig-iron in the blast furnace using top gas in the blast furnace process
-
- 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
-
- 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]
-
- 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
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Manufacture Of Iron (AREA)
Abstract
The graphite electrodes are disposed between tuyere level and the bottom of the shaft. The fuel gas or liquid is injected either separately or together with 50-70% of the furnace flue gases which are recirculated after preheating to 1200 degrees C and are in addition to the tuyeres injected at various other levels down to the lower third of the furnace, their function being to maintain a uniform distribution of reducing gases over the furnace cross section. Prefd. hydro-carbon fuel used is methane gas preheated to 600-800 degrees C. Blast furnace uses very little coke as a result of which less slag is produced, less lime stone required, and less S is present.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO65223A RO55786A2 (en) | 1970-12-08 | 1970-12-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2117949A1 true FR2117949A1 (en) | 1972-07-28 |
| FR2117949B1 FR2117949B1 (en) | 1975-02-07 |
Family
ID=20088421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7144064A Granted FR2117949A1 (en) | 1970-12-08 | 1971-12-08 | Pig iron blast furnace uses minimum coke - with electrode and fuel gas assisted heating |
Country Status (5)
| Country | Link |
|---|---|
| DE (1) | DE2160564A1 (en) |
| FR (1) | FR2117949A1 (en) |
| IT (1) | IT953160B (en) |
| RO (1) | RO55786A2 (en) |
| SE (1) | SE369424B (en) |
-
1970
- 1970-12-08 RO RO65223A patent/RO55786A2/ro unknown
-
1971
- 1971-12-07 DE DE19712160564 patent/DE2160564A1/en active Pending
- 1971-12-07 IT IT32125/71A patent/IT953160B/en active
- 1971-12-07 SE SE15668/71A patent/SE369424B/xx unknown
- 1971-12-08 FR FR7144064A patent/FR2117949A1/en active Granted
Non-Patent Citations (1)
| Title |
|---|
| NEANT * |
Also Published As
| Publication number | Publication date |
|---|---|
| SE369424B (en) | 1974-08-26 |
| RO55786A2 (en) | 1974-03-01 |
| DE2160564A1 (en) | 1972-06-29 |
| IT953160B (en) | 1973-08-10 |
| FR2117949B1 (en) | 1975-02-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |