GB736079A - Process for obtaining iron or steel from low grade ores - Google Patents
Process for obtaining iron or steel from low grade oresInfo
- Publication number
- GB736079A GB736079A GB13592/52A GB1359252A GB736079A GB 736079 A GB736079 A GB 736079A GB 13592/52 A GB13592/52 A GB 13592/52A GB 1359252 A GB1359252 A GB 1359252A GB 736079 A GB736079 A GB 736079A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fe2o3
- iron
- effected
- steel
- ores
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
- B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
-
- 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
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Iron or steel production comprises grinding ores to a grain size below 7 mm., reducing the Fe2O3 to Fe3O4 and FeO at below 520 DEG C., reoxidizing to g -Fe2O3 at temperatures decreasing from 440 DEG C. to 270 DEG C. in the presence of finely-dispersed water or water vapour for cooling, further cooling to below 100 DEG C., grinding to a fine powder, magnetic separation of gangue, and a final reduction at temperatures up to 900 DEG C. For obtaining iron dust, revolving tube furnaces or whirling layer furnaces as disclosed in Specifications 301,975 and 309,253, [both in Class 55 (i)], are suitably used, the initial reduction to F2O being effected with CO with gradual increase in temperature. Pyrites, and iron phosphate or carbonate ores for treatment must first be converted to ferric oxide below 620 DEG C., the phosphates being heated with dolomite, especially in the presence of alkalis.ALSO:Iron or steel production comprises grinding ores to a grain size below 7 mm., reducing the Fe2O3 to Fe3O4 and FeO at below 520 DEG C., re-oxidizing to g -Fe2O3 at temperatures decreasing from 440 DEG to 270 DEG C. in the presence of finely dispersed water or water vapour for cooling, further cooling to below 100 DEG C., grinding to a fine powder, magnetic separation of gangue, and a final reduction at temperatures up to 900 DEG C. For obtaining iron dust, revolving tube furnaces or whirling layer furnaces as disclosed in Specifications 301,975 and 309,253, [both in Class 55 (i)], are suitably used, the initial reduction to Fe3O being effected with CO with gradual increase in temperature, and the last stage being effected up to 900 DEG C. in the presence of hydrogen liberated in the oxidation of Fe3O4 and FeO to g -Fe2O3. Smelting of the iron dust, or a direct conversion to steel, may be effected in a cupola or low shaft furnace, if desired after mixing with scrap steel. Pyrites, and iron phosphate or carbonate ores for treatment must first be converted to ferric oxide below 620 DEG C., the phosphates being heated with dolomite, especially in the presence of alkalis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB13592/52A GB736079A (en) | 1952-05-28 | 1952-05-28 | Process for obtaining iron or steel from low grade ores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB13592/52A GB736079A (en) | 1952-05-28 | 1952-05-28 | Process for obtaining iron or steel from low grade ores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB736079A true GB736079A (en) | 1955-08-31 |
Family
ID=10025782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13592/52A Expired GB736079A (en) | 1952-05-28 | 1952-05-28 | Process for obtaining iron or steel from low grade ores |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB736079A (en) |
-
1952
- 1952-05-28 GB GB13592/52A patent/GB736079A/en not_active Expired
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