GB1380721A - Production of ferrites - Google Patents
Production of ferritesInfo
- Publication number
- GB1380721A GB1380721A GB498871A GB498871A GB1380721A GB 1380721 A GB1380721 A GB 1380721A GB 498871 A GB498871 A GB 498871A GB 498871 A GB498871 A GB 498871A GB 1380721 A GB1380721 A GB 1380721A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ferrite
- soln
- metal
- ferrites
- precipitate
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
- H01F1/36—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
- C04B35/2658—Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Power Engineering (AREA)
- Compounds Of Iron (AREA)
- Soft Magnetic Materials (AREA)
- Magnetic Ceramics (AREA)
Abstract
1380721 Ferrites IMPERIAL CHEMICAL INDUSTRIES Ltd 7 Feb 1972 [19 Feb 1971] 4988/71 Headings C1A and C1J Ferrites are prepared by co-precipitating metal carbonates from an aq. soln. of a soluble salt of iron and at least one other metal using an aq. soln. of ammonium carbonate and/or bicarbonate, ageing the slurry with agitation at a temperature of 20-50‹ C., separating and then heating the precipitate to form the ferrite. The metal may be Mn, Zn, Cu, Ni or Ba. An oxide of Zr, Cr, Cu, Mg, Si, Ba, Co, Al, Ni, Sr, V, Ca or Ti in an amount up to 0À5% by wt. may be present in the ferrite. The separated precipitate may be dried at 100-200‹ C. and then calcined at 800-1000‹ C. The dried precipitate may be treated with an aq. soln. of Zn(NO 3 ) 2 or Ti isopropoxide in butanol to increase the metal content of the ferrite. The calcined ferrite may be treated with a solution of polyvinyl alcohol, pelleted at 400-700 kg./sq. cm., granulated to 375-425 Á, pelleted at 1490-2500 kg./sq. cm. and then sintered at 1250‹ C. in a N 2 /O 2 atmosphere. The ferrite may have an initial permeability of 1247-4452.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB498871A GB1380721A (en) | 1971-02-19 | 1971-02-19 | Production of ferrites |
NL7202085A NL7202085A (en) | 1971-02-19 | 1972-02-17 | |
FR7205651A FR2125621B1 (en) | 1971-02-19 | 1972-02-18 | |
DE19722207732 DE2207732A1 (en) | 1971-02-19 | 1972-02-18 | Process for the production of ferrites |
IT2079672A IT947739B (en) | 1971-02-19 | 1972-02-19 | PRODUCTION OF FERRITI |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB498871A GB1380721A (en) | 1971-02-19 | 1971-02-19 | Production of ferrites |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1380721A true GB1380721A (en) | 1975-01-15 |
Family
ID=9787615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB498871A Expired GB1380721A (en) | 1971-02-19 | 1971-02-19 | Production of ferrites |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE2207732A1 (en) |
FR (1) | FR2125621B1 (en) |
GB (1) | GB1380721A (en) |
IT (1) | IT947739B (en) |
NL (1) | NL7202085A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4169053A (en) * | 1975-08-08 | 1979-09-25 | Nippon Electric Co., Ltd. | Method of treating waste waters containing solid-phase difficultly-soluble compounds |
US4372865A (en) | 1980-09-26 | 1983-02-08 | Spang Industries, Inc. | Carbonate/hydroxide coprecipitation process |
CN111994962A (en) * | 2020-06-06 | 2020-11-27 | 南昌航空大学 | Gamma-Fe2O3Preparation method of (1) |
CN116855813A (en) * | 2023-08-22 | 2023-10-10 | 吉林省宝利科贸有限公司 | Polyhedral nano high-entropy material and preparation method and application thereof |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH622913A5 (en) * | 1978-02-07 | 1981-04-30 | Micafil Ag | |
RU2771498C1 (en) * | 2021-11-22 | 2022-05-05 | Федеральное государственное бюджетное научное учреждение "Федеральный исследовательский центр "Красноярский научный центр Сибирского отделения Российской академии наук" | Method for producing nanosized nickel ferrite powder |
-
1971
- 1971-02-19 GB GB498871A patent/GB1380721A/en not_active Expired
-
1972
- 1972-02-17 NL NL7202085A patent/NL7202085A/xx unknown
- 1972-02-18 DE DE19722207732 patent/DE2207732A1/en active Pending
- 1972-02-18 FR FR7205651A patent/FR2125621B1/fr not_active Expired
- 1972-02-19 IT IT2079672A patent/IT947739B/en active
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4169053A (en) * | 1975-08-08 | 1979-09-25 | Nippon Electric Co., Ltd. | Method of treating waste waters containing solid-phase difficultly-soluble compounds |
US4372865A (en) | 1980-09-26 | 1983-02-08 | Spang Industries, Inc. | Carbonate/hydroxide coprecipitation process |
CN111994962A (en) * | 2020-06-06 | 2020-11-27 | 南昌航空大学 | Gamma-Fe2O3Preparation method of (1) |
CN116855813A (en) * | 2023-08-22 | 2023-10-10 | 吉林省宝利科贸有限公司 | Polyhedral nano high-entropy material and preparation method and application thereof |
CN116855813B (en) * | 2023-08-22 | 2024-02-09 | 吉林省宝利科贸有限公司 | Polyhedral nano high-entropy material and preparation method and application thereof |
Also Published As
Publication number | Publication date |
---|---|
DE2207732A1 (en) | 1972-09-21 |
FR2125621A1 (en) | 1972-09-29 |
NL7202085A (en) | 1972-08-22 |
IT947739B (en) | 1973-05-30 |
FR2125621B1 (en) | 1975-03-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |