GB1212126A - A METHOD OF MANUFACTURING gamma-Fe2O3 PARTICLES - Google Patents
A METHOD OF MANUFACTURING gamma-Fe2O3 PARTICLESInfo
- Publication number
- GB1212126A GB1212126A GB2789468A GB2789468A GB1212126A GB 1212126 A GB1212126 A GB 1212126A GB 2789468 A GB2789468 A GB 2789468A GB 2789468 A GB2789468 A GB 2789468A GB 1212126 A GB1212126 A GB 1212126A
- Authority
- GB
- United Kingdom
- Prior art keywords
- feooh
- ferrous
- particles
- oxidizing
- air
- 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
- 239000002245 particle Substances 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title 1
- 229910006297 γ-Fe2O3 Inorganic materials 0.000 title 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 229910000859 α-Fe Inorganic materials 0.000 abstract 3
- 229910006540 α-FeOOH Inorganic materials 0.000 abstract 3
- 229910001566 austenite Inorganic materials 0.000 abstract 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- 239000000725 suspension Substances 0.000 abstract 2
- 229910002588 FeOOH Inorganic materials 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- 239000011790 ferrous sulphate Substances 0.000 abstract 1
- 235000003891 ferrous sulphate Nutrition 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 abstract 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- 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
- C01G49/06—Ferric oxide [Fe2O3]
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
- G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
- G11B5/70647—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides with a skin
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
- G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
- G11B5/70652—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides gamma - Fe2 O3
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/50—Agglomerated particles
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/11—Powder tap density
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/19—Oil-absorption capacity, e.g. DBP values
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/42—Magnetic properties
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Dermatology (AREA)
- Health & Medical Sciences (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Iron (AREA)
- Hard Magnetic Materials (AREA)
Abstract
1,212,126. γ-Ferric oxide. TODA KOGYO K.K. 12 June, 1968 [7 Aug., 1967], No. 27894/68. Heading C1A. [Also in Divisions C3 and H1] γ-Fe 2 O 3 is prepared by adding sodium hydroxide and/or potassium hydroxide to a solution of a ferrous salt, giving a suspension of ferrous hydroxide; oxidizing with a free-oxygen-containing gas e.g. air at a pH above 11, and 3-450 C., and agitating or stirring the solution to give α-FeOOH; reducing the α-FeOOH, with or without intermediate dehydration to α-Fe 2 O 3 , to Fe 3 O 4 ; and oxidizing the Fe 3 O 4 . Ferrous sulphate may be used as the ferrous salt, and the Fe(OH) 2 suspension diluted with water before oxidation. The α- FeOOH particles may be dehydrated to α-Fe 2 O 3 at above 250‹ C., and the α-FeOOH or α-Fe 2 O 3 reduced at 300-350‹ C., in a hydrogen atmosphere. The oxidation of Fe 3 O 4 to γ-Fe 2 O 3 may be at 150-230‹ C. in air. The particles retain the crystalline shape of their starting compounds throughout the series of reactions.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5066667 | 1967-08-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1212126A true GB1212126A (en) | 1970-11-11 |
Family
ID=12865261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2789468A Expired GB1212126A (en) | 1967-08-07 | 1968-06-12 | A METHOD OF MANUFACTURING gamma-Fe2O3 PARTICLES |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1212126A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4882395A (en) * | 1972-02-04 | 1973-11-02 | ||
| US4060596A (en) * | 1972-09-30 | 1977-11-29 | Sony Corporation | Method of making goethite powder |
| US7216416B2 (en) | 2001-11-09 | 2007-05-15 | Amada Company, Limited | Compound processing system for sheet metal processing |
-
1968
- 1968-06-12 GB GB2789468A patent/GB1212126A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4882395A (en) * | 1972-02-04 | 1973-11-02 | ||
| JPS5529577B2 (en) * | 1972-02-04 | 1980-08-05 | ||
| US4060596A (en) * | 1972-09-30 | 1977-11-29 | Sony Corporation | Method of making goethite powder |
| US7216416B2 (en) | 2001-11-09 | 2007-05-15 | Amada Company, Limited | Compound processing system for sheet metal processing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1392980A (en) | Production of acicular magnetic iron oxides | |
| GB1402801A (en) | Production of finely divided acicular magnetic iron oxides | |
| GB1060767A (en) | Process for the preparation of -feooh | |
| GB1347615A (en) | Cobalt doped magnetic iron oxide particles | |
| GB1190026A (en) | Magnetic Iron Oxides and processes therefor | |
| GB1349582A (en) | Process for oxidation of dihydroquinacridones to quinacridones | |
| GB1487008A (en) | Preparation of magnetite from ferrous sulphate | |
| GB721630A (en) | Method for the production of ª†-fe o of improved magnetic properties | |
| GB1404096A (en) | Cobalt-containing acicular ferrimagnetic iron oxide of remanence stability | |
| GB1531387A (en) | Preparation of iron oxide black pigments | |
| GB1212126A (en) | A METHOD OF MANUFACTURING gamma-Fe2O3 PARTICLES | |
| US3117933A (en) | Process for the production of needleshaped, cobalt-containing gamma-ferric oxide crystalline particles | |
| GB1333405A (en) | Production of magnetic iron oxides and recording members containing the same | |
| GB1271449A (en) | Production of iron oxide pigments | |
| IE36177B1 (en) | Synthetic gamma ferric oxide | |
| ES311205A1 (en) | Process for the production of finely particulate high purity copper powder | |
| JPS5777033A (en) | Manufacture of iron oxide hydrate gamma-feooh | |
| GB1034504A (en) | Improvements in or relating to methods of producing magnetic iron oxide, ª feo | |
| GB1196494A (en) | Process for the Production of Ferric Oxide | |
| GB1486961A (en) | Preparation of magnetite of a controlled particle size | |
| DE1176111B (en) | Process for the production of ferromagnetic ª † -FeO | |
| GB1432808A (en) | Solid solutions of iron oxide and bivalent metals | |
| GB1482157A (en) | Cobalt acicular gamma ferric oxide | |
| JPS5669229A (en) | Preparation of hydrous iron oxide | |
| GB1193015A (en) | Coated Iron Oxide Pigments and Process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |