GB1114456A - Method of making ore briquettes - Google Patents
Method of making ore briquettesInfo
- Publication number
- GB1114456A GB1114456A GB40215/65A GB4021565A GB1114456A GB 1114456 A GB1114456 A GB 1114456A GB 40215/65 A GB40215/65 A GB 40215/65A GB 4021565 A GB4021565 A GB 4021565A GB 1114456 A GB1114456 A GB 1114456A
- Authority
- GB
- United Kingdom
- Prior art keywords
- temperature
- fines
- hematite
- coal
- weight
- 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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
-
- 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
-
- 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)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Iron (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
In briquetting specular hematite fines, they are heated under reducing conditions to raise their temperature into the range 850-1050 DEG F. and effect a partial reduction of the hematite such that 15% to 30% by weight of the original oxygen content is removed and then there is mixed with the heated and part reduced fines sufficient low temperature bituminous coal fines, which are at ambient temperature or at the temperature resulting from washing and drying such coal fines, to produce a uniformly dispersed mixture containing 5% to 15% by weight of coal and having an apparent temperature as measured before the mixture reaches thermal equilibrium of 600-800 DEG F., which mixture is formed into briquettes whilst at this temperature, the coal serving as a binder and being subsequently cooled, re-oxidation of the hematite being prevented. The reducing step is preferably performed in a fluidized bed, the fluidizing gas being H2, CO, or mixtures thereof at a temperature of 900-1000 DEG F. A fluxing material may be included with the fines in a quantity sufficient to produce a self-fluxing briquette. The briquettes may be cooled in a shaft by a stream of cool-reducing gas which is then used in heating and reducing the hematite. The preferred amount of partial reduction is 18-23% by weight.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US398346A US3295952A (en) | 1964-09-22 | 1964-09-22 | Method of making ore briquettes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1114456A true GB1114456A (en) | 1968-05-22 |
Family
ID=23575022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB40215/65A Expired GB1114456A (en) | 1964-09-22 | 1965-09-21 | Method of making ore briquettes |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3295952A (en) |
| BE (1) | BE669809A (en) |
| DE (1) | DE1533879A1 (en) |
| GB (1) | GB1114456A (en) |
| SE (1) | SE304765B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3753681A (en) * | 1970-10-01 | 1973-08-21 | Continental Ore Corp | Beneficiation of vanadium-containing materials |
| DE2126803A1 (en) * | 1971-05-29 | 1972-12-14 | Fried. Krupp Gmbh, 4300 Essen | Process for the production of steel |
| US3932169A (en) * | 1973-06-28 | 1976-01-13 | United States Steel Corporation | Method of making briquettes with machine having an inert gas seal |
| US4081228A (en) * | 1977-04-21 | 1978-03-28 | Moore James E | Apparatus for hot briquetting |
| US4249906A (en) * | 1979-12-17 | 1981-02-10 | Howell Phillip C | Method and apparatus for handling flux fines |
-
0
- BE BE669809D patent/BE669809A/xx unknown
-
1964
- 1964-09-22 US US398346A patent/US3295952A/en not_active Expired - Lifetime
-
1965
- 1965-09-21 DE DE19651533879 patent/DE1533879A1/en active Pending
- 1965-09-21 GB GB40215/65A patent/GB1114456A/en not_active Expired
- 1965-09-22 SE SE12313/65A patent/SE304765B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE304765B (en) | 1968-10-07 |
| DE1533879A1 (en) | 1970-02-05 |
| US3295952A (en) | 1967-01-03 |
| BE669809A (en) | 1900-01-01 |
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