GB1380721A - Production of ferrites - Google Patents

Production of ferrites

Info

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
Application number
GB498871A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB498871A priority Critical patent/GB1380721A/en
Priority to NL7202085A priority patent/NL7202085A/xx
Priority to FR7205651A priority patent/FR2125621B1/fr
Priority to DE19722207732 priority patent/DE2207732A1/en
Priority to IT2079672A priority patent/IT947739B/en
Publication of GB1380721A publication Critical patent/GB1380721A/en
Expired legal-status Critical Current

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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (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)
  • Magnetic Ceramics (AREA)
  • Soft Magnetic Materials (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.
GB498871A 1971-02-19 1971-02-19 Production of ferrites Expired GB1380721A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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
NL7202085A (en) 1972-08-22
FR2125621B1 (en) 1975-03-14
FR2125621A1 (en) 1972-09-29
IT947739B (en) 1973-05-30
DE2207732A1 (en) 1972-09-21

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees