IN188762B - - Google Patents
Info
- Publication number
- IN188762B IN188762B IN20DE1993A IN188762B IN 188762 B IN188762 B IN 188762B IN 20DE1993 A IN20DE1993 A IN 20DE1993A IN 188762 B IN188762 B IN 188762B
- Authority
- IN
- India
- Prior art keywords
- hematite
- magnetite
- concentrate
- magnetic
- recycled
- Prior art date
Links
- 229910052595 hematite Inorganic materials 0.000 abstract 5
- 239000011019 hematite Substances 0.000 abstract 5
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 abstract 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 4
- 239000012141 concentrate Substances 0.000 abstract 4
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 abstract 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 2
- 239000008188 pellet Substances 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 1
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract 1
- 238000007885 magnetic separation Methods 0.000 abstract 1
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
-
- 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
- C22B1/04—Blast roasting
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Compounds Of Iron (AREA)
- Meat, Egg Or Seafood Products (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Iron ore concentrate is converted to magnetic gamma hematite in an autogenous roasting operation which is self-sustaining. The iron ore concentrate is preheated and contained magnetite is oxidized to hematite. Hematite is reduced to magnetite using carbon monoxide. After cooling, the magnetite is oxidatively exothermically converted to magnetic gamma hematite. The thermal energy resulting from the latter step is recycled to the preheating and reduction steps while thermal energy resulting from the cooling step also is recycled to those steps. The magnetic gamma hematite may be subjected to magnetic separation to produce a very low silica high purity iron oxide concentrate, which may be blended with high silica concentrate to provide a pellet feed for making blast furnace feed pellets. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB929200434A GB9200434D0 (en) | 1992-01-09 | 1992-01-09 | Autogenous roasting or iron ore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN188762B true IN188762B (en) | 2002-11-02 |
Family
ID=10708351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN20DE1993 IN188762B (en) | 1992-01-09 | 1993-01-11 |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US5244494A (en) |
| EP (1) | EP0551216B1 (en) |
| JP (1) | JPH0687614A (en) |
| KR (1) | KR930016551A (en) |
| AT (1) | ATE165625T1 (en) |
| AU (1) | AU663908B2 (en) |
| BR (1) | BR9300102A (en) |
| CA (1) | CA2063075C (en) |
| DE (1) | DE69318190T2 (en) |
| GB (1) | GB9200434D0 (en) |
| IN (1) | IN188762B (en) |
| MX (1) | MX9300090A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5814164A (en) | 1994-11-09 | 1998-09-29 | American Scientific Materials Technologies L.P. | Thin-walled, monolithic iron oxide structures made from steels, and methods for manufacturing such structures |
| US6461562B1 (en) | 1999-02-17 | 2002-10-08 | American Scientific Materials Technologies, Lp | Methods of making sintered metal oxide articles |
| US6962685B2 (en) * | 2002-04-17 | 2005-11-08 | International Business Machines Corporation | Synthesis of magnetite nanoparticles and the process of forming Fe-based nanomaterials |
| US7814879B2 (en) | 2008-04-23 | 2010-10-19 | Techtronic Outdoor Products Technology Limited | Monolithic block and valve train for a four-stroke engine |
| KR101521251B1 (en) * | 2012-12-28 | 2015-05-20 | 재단법인 포항산업과학연구원 | Maghemite powders and their manufacturing process |
| CN103215436B (en) * | 2013-03-18 | 2016-06-08 | 酒泉钢铁(集团)有限责任公司 | Block refractory iron ore shaft furnace magnetizing roast different grain size hierarchical processing method |
| CN103627891B (en) * | 2013-12-09 | 2015-08-12 | 北京华夏能达科技有限公司 | A kind of iron ore magnetizing roasting method |
| CN106216084A (en) * | 2016-10-09 | 2016-12-14 | 武汉科技大学 | A kind of Refractory iron ore dressing method |
| CN109133141B (en) * | 2018-09-18 | 2020-07-21 | 东北大学 | A method for separating hematite from bastnaesite reducing associated rare earth ore |
| WO2025259107A1 (en) | 2024-06-10 | 2025-12-18 | Renewable Iron Fuel Technology B.V. | A method for the production of iron oxide |
| WO2026143272A1 (en) * | 2025-01-03 | 2026-07-09 | Vale S.A. | Process and system for concentrating supergene iron ore into a high-content concentrate (>67% fe(t)) and converting it into metamorphic iron ore |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2693409A (en) * | 1949-11-09 | 1954-11-02 | Battelle Memorial Institute | Treatment of iron ore |
| CA1097084A (en) * | 1978-02-16 | 1981-03-10 | Maghemite Inc. | Modified metamorphosed iron ore and method of producing same |
-
1992
- 1992-01-09 GB GB929200434A patent/GB9200434D0/en active Pending
- 1992-03-13 CA CA002063075A patent/CA2063075C/en not_active Expired - Fee Related
- 1992-03-16 US US07/851,964 patent/US5244494A/en not_active Expired - Fee Related
-
1993
- 1993-01-08 MX MX9300090A patent/MX9300090A/en not_active IP Right Cessation
- 1993-01-08 BR BR9300102A patent/BR9300102A/en not_active IP Right Cessation
- 1993-01-09 KR KR1019930000220A patent/KR930016551A/en not_active Withdrawn
- 1993-01-11 AT AT93300158T patent/ATE165625T1/en not_active IP Right Cessation
- 1993-01-11 DE DE69318190T patent/DE69318190T2/en not_active Expired - Fee Related
- 1993-01-11 IN IN20DE1993 patent/IN188762B/en unknown
- 1993-01-11 EP EP93300158A patent/EP0551216B1/en not_active Expired - Lifetime
- 1993-01-11 AU AU31116/93A patent/AU663908B2/en not_active Ceased
- 1993-01-11 JP JP5002889A patent/JPH0687614A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| MX9300090A (en) | 1993-12-01 |
| EP0551216B1 (en) | 1998-04-29 |
| KR930016551A (en) | 1993-08-26 |
| JPH0687614A (en) | 1994-03-29 |
| DE69318190T2 (en) | 1998-11-26 |
| AU663908B2 (en) | 1995-10-26 |
| EP0551216A1 (en) | 1993-07-14 |
| CA2063075C (en) | 1999-03-30 |
| AU3111693A (en) | 1993-07-15 |
| ATE165625T1 (en) | 1998-05-15 |
| US5244494A (en) | 1993-09-14 |
| DE69318190D1 (en) | 1998-06-04 |
| BR9300102A (en) | 1993-07-13 |
| GB9200434D0 (en) | 1992-02-26 |
| CA2063075A1 (en) | 1993-07-10 |
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