GB1104553A - Process for heating previously reduced products - Google Patents
Process for heating previously reduced productsInfo
- Publication number
- GB1104553A GB1104553A GB7160/66A GB716066A GB1104553A GB 1104553 A GB1104553 A GB 1104553A GB 7160/66 A GB7160/66 A GB 7160/66A GB 716066 A GB716066 A GB 716066A GB 1104553 A GB1104553 A GB 1104553A
- Authority
- GB
- United Kingdom
- Prior art keywords
- products
- gases
- stage
- burnt
- heated
- 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
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0046—Making spongy iron or liquid steel, by direct processes making metallised agglomerates or iron oxide
-
- 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
- C21B13/0086—Conditioning, transformation of reduced iron ores
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/56—Manufacture of steel by other methods
- C21C5/567—Manufacture of steel by other methods operating in a continuous way
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Gas Separation By Absorption (AREA)
Abstract
<PICT:1104553/C6-C7/1> Pre-reduced solid iron products, e.g. pellets or powder containing 85 or 95% metallic iron, are heated by hot gases recovered from the conversion refining of pig iron in at least two successive stages during each of which a part of the Co contained in the gases, which are passed counterflow through the products, is burnt by the controlled feed of air without re-oxidizing the products. For example, gases escaping from a steelworks converter 2 may be at a temperature of 1600 DEG C. and contain by volume 15% CO2 and 85% CO, giving a ratio of % CO2: (% CO2 + % CO) of 0.15. The pre-reduced pellets may be heated to 700 DEG C. in the first stage, where the above ratio is 0.4, and to 1130 DEG C. in the second stage, where the above ratio is 0.25, inside a horizontal rotary or shaft furnace heater 1, the gases being burnt in each stage by controlled injection of N2-enriched air.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR6670A FR1434287A (en) | 1965-02-23 | 1965-02-23 | Heating process for pre-reduced products |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1104553A true GB1104553A (en) | 1968-02-28 |
Family
ID=8571679
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7160/66A Expired GB1104553A (en) | 1965-02-23 | 1966-02-18 | Process for heating previously reduced products |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE676208A (en) |
ES (1) | ES323391A1 (en) |
FR (1) | FR1434287A (en) |
GB (1) | GB1104553A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2562222B1 (en) * | 1984-03-28 | 1986-08-01 | Litchinko Catherine | INSTALLATION AND METHOD FOR CONTINUOUSLY LOADING A REACTOR IN SOLID MATERIAL AND HEATING THE SAME WITH THE GAS EMITTED BY THE REACTOR |
-
1965
- 1965-02-23 FR FR6670A patent/FR1434287A/en not_active Expired
-
1966
- 1966-02-08 BE BE676208D patent/BE676208A/xx unknown
- 1966-02-18 GB GB7160/66A patent/GB1104553A/en not_active Expired
- 1966-02-22 ES ES0323391A patent/ES323391A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1434287A (en) | 1966-04-08 |
ES323391A1 (en) | 1967-03-16 |
BE676208A (en) | 1966-06-16 |
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