GB979979A - Improvements in or relating to magnetite - Google Patents
Improvements in or relating to magnetiteInfo
- Publication number
- GB979979A GB979979A GB22545/62A GB2254562A GB979979A GB 979979 A GB979979 A GB 979979A GB 22545/62 A GB22545/62 A GB 22545/62A GB 2254562 A GB2254562 A GB 2254562A GB 979979 A GB979979 A GB 979979A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ore
- gases
- pass
- magnetite
- cyclone
- 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
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 title abstract 5
- 239000007789 gas Substances 0.000 abstract 15
- 239000002245 particle Substances 0.000 abstract 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 239000000725 suspension Substances 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000010586 diagram Methods 0.000 abstract 1
- 238000009837 dry grinding Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000000446 fuel Substances 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- 230000005484 gravity Effects 0.000 abstract 1
- 238000000227 grinding Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 1
- 235000013980 iron oxide Nutrition 0.000 abstract 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 abstract 1
- 239000006148 magnetic separator Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
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
- C21B13/0033—In fluidised bed furnaces or apparatus containing a dispersion of the material
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/08—Ferroso-ferric oxide [Fe3O4]
-
- 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
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
<PICT:0979979/C1/1> A major portion of the non-magnetic compounds of a ferruginous ore is converted to magnetite by passing a suspension of the finely divided ore (the largest particle of which will pass through a standard U.S.A. mesh 10 sieve), in a moving stream of reducing gases heated to a temperature below the fusion point of the ore, through an inlet into a closed reaction zone having an outlet higher than said inlet, the ore flowing concurrently with the reducing gases, the ratio of gases to ore being that required to reduce substantially all of the iron oxides to magnetite, and the velocity of the gases being such that the suspension is conveyed upwardly through the reaction zone and the ore particles do not settle out by gravity alone, and separating the reduced one from the gases. The reducing gases may contain CO, CO2 and N2, the ratio of CO to CO+CO2 being maintained at a value within the magnetite phase area of the equilibrium diagram for iron, carbon and oxygen. Ore from bin 10 is transferred to dry-grinding system 11, where it is pulverized and dried simultaneously so that the ore will all pass 10 mesh, and thence to air-classifier 12, cyclone separator 13 and bin 16. Ore particles from 16 are suspended, for preheating, in gas flowing through 18 to cyclone separator 19, whence exhaust gases are returned through 21 to grinding system 11 for ore drying. Ore particles from 19 are suspended, for further preheating, in gases flowing through 23 to cyclone 22, whence exhaust gases pass through 18. Ore from 22 is suspended in reducing gases flowing through reaction zone 27 to cyclone 24, whence exhaust gases pass through 23. The reducing gases are obtained from generator 26 supplied with fuel and air at 28, 29, exhaust gas from cyclone 22, being added to 28 if desired. Ore particles from 24 pass through cooler 32 to magnetic separators 33, and the magnetite is briquetted at 34. Introduction of ore particles into the gas stream may occur at a Venturi throat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB22545/62A GB979979A (en) | 1962-06-12 | 1962-06-12 | Improvements in or relating to magnetite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB22545/62A GB979979A (en) | 1962-06-12 | 1962-06-12 | Improvements in or relating to magnetite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB979979A true GB979979A (en) | 1965-01-06 |
Family
ID=10181146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22545/62A Expired GB979979A (en) | 1962-06-12 | 1962-06-12 | Improvements in or relating to magnetite |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB979979A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989004292A1 (en) * | 1987-11-09 | 1989-05-18 | Companhia Vale Do Rio Doce | Process for the production of iron oxide having high reactivity and high specific surface |
| CN104923386A (en) * | 2015-06-12 | 2015-09-23 | 鞍钢集团矿业公司 | Micro-fine disseminated mixed ore coarse size preconcentrating and magnetic-gravitational separating process |
| WO2016127899A1 (en) * | 2015-02-15 | 2016-08-18 | 胡沿东 | Ore dressing system |
-
1962
- 1962-06-12 GB GB22545/62A patent/GB979979A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989004292A1 (en) * | 1987-11-09 | 1989-05-18 | Companhia Vale Do Rio Doce | Process for the production of iron oxide having high reactivity and high specific surface |
| WO2016127899A1 (en) * | 2015-02-15 | 2016-08-18 | 胡沿东 | Ore dressing system |
| CN104923386A (en) * | 2015-06-12 | 2015-09-23 | 鞍钢集团矿业公司 | Micro-fine disseminated mixed ore coarse size preconcentrating and magnetic-gravitational separating process |
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