[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

GB1221426A - Improvements in or relating to the manufacture of composite ferrites - Google Patents

Improvements in or relating to the manufacture of composite ferrites

Info

Publication number
GB1221426A
GB1221426A GB06414/67A GB1641467A GB1221426A GB 1221426 A GB1221426 A GB 1221426A GB 06414/67 A GB06414/67 A GB 06414/67A GB 1641467 A GB1641467 A GB 1641467A GB 1221426 A GB1221426 A GB 1221426A
Authority
GB
United Kingdom
Prior art keywords
ferrite
solution
hno
dissolving
passing
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
GB06414/67A
Inventor
Frederick Claud Cowlard
George Ord
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.)
Plessey Co Ltd
Original Assignee
Plessey Co 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB06414/67A priority Critical patent/GB1221426A/en
Priority to IL29743A priority patent/IL29743A/en
Priority to FR1560826D priority patent/FR1560826A/fr
Priority to NL6805029A priority patent/NL6805029A/xx
Priority to DE19681771139 priority patent/DE1771139A1/en
Priority to BE718675D priority patent/BE718675A/fr
Publication of GB1221426A publication Critical patent/GB1221426A/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
    • H01F1/032—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 hard-magnetic materials
    • H01F1/10—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 hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—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 hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Iron (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

1,221,426. Magnetic compositions. PLESSEY CO. Ltd. 27 March, 1968 [11 April, l967], No. 16414/67. Heading H1H. A ferrite containing a basic oxide is produced by dissolving the metals or compounds of the metals present in the ferrite in HNO 3 , decomposing the solution and heating to form the ferrite, passing the nitrous gases from the decomposition and solution stages through an absorption system for recovering HNO 3 , using the HNO 3 to form the nitrate solution, passing the tail gases of the absorption system through a dispersion of a basic oxide present in the ferrite, and dissolving the modified dispersion in HN0 3 to form at least part of the nitrate solution of this metal. In the example, a solution of Fe, Zn and Mn nitrates was sprayed on to a surface held at 250Œ10‹ C. and the oxide powder was discharged into a calcination chamber held at above 650‹ C., e.g. 800‹ C. The product contained 71 wt per cent Fe 2 O 3 , 14.02% ZnO, and 15.06% MnO, and was 60% spinel. Also mentioned is (Ba, Sr) Fe 12 O 19 , for which a decomposition temperature of 750‹ C. is used.
GB06414/67A 1967-04-11 1967-04-11 Improvements in or relating to the manufacture of composite ferrites Expired GB1221426A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB06414/67A GB1221426A (en) 1967-04-11 1967-04-11 Improvements in or relating to the manufacture of composite ferrites
IL29743A IL29743A (en) 1967-04-11 1968-04-02 Manufacture of composite ferrites
FR1560826D FR1560826A (en) 1967-04-11 1968-04-09
NL6805029A NL6805029A (en) 1967-04-11 1968-04-09
DE19681771139 DE1771139A1 (en) 1967-04-11 1968-04-10 Process for the production of mixed ferrite
BE718675D BE718675A (en) 1967-04-11 1968-07-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB06414/67A GB1221426A (en) 1967-04-11 1967-04-11 Improvements in or relating to the manufacture of composite ferrites

Publications (1)

Publication Number Publication Date
GB1221426A true GB1221426A (en) 1971-02-03

Family

ID=10076902

Family Applications (1)

Application Number Title Priority Date Filing Date
GB06414/67A Expired GB1221426A (en) 1967-04-11 1967-04-11 Improvements in or relating to the manufacture of composite ferrites

Country Status (5)

Country Link
DE (1) DE1771139A1 (en)
FR (1) FR1560826A (en)
GB (1) GB1221426A (en)
IL (1) IL29743A (en)
NL (1) NL6805029A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4336242A (en) * 1978-11-18 1982-06-22 Dornier System Gmbh. Hard ferrite powder and process for the preparation thereof
US10035136B2 (en) * 2014-03-25 2018-07-31 Tpc Group Llc Catalyst for reduced nitrogen oxide (NOx) emissions in an oxodehydrogenation process
CN114524668A (en) * 2022-03-15 2022-05-24 宜宾金川电子有限责任公司 Method for adding and recycling manganese zinc ferrite waste in strontium ferrite

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4336242A (en) * 1978-11-18 1982-06-22 Dornier System Gmbh. Hard ferrite powder and process for the preparation thereof
US10035136B2 (en) * 2014-03-25 2018-07-31 Tpc Group Llc Catalyst for reduced nitrogen oxide (NOx) emissions in an oxodehydrogenation process
CN114524668A (en) * 2022-03-15 2022-05-24 宜宾金川电子有限责任公司 Method for adding and recycling manganese zinc ferrite waste in strontium ferrite

Also Published As

Publication number Publication date
FR1560826A (en) 1969-03-21
IL29743A (en) 1971-11-29
DE1771139A1 (en) 1971-11-25
NL6805029A (en) 1968-10-14
IL29743A0 (en) 1968-06-20

Similar Documents

Publication Publication Date Title
GB1143448A (en) Improvements in or relating to manganese-zinc-ferrites
GB1243878A (en) Production of the temperature-stable iron-manganese oxide black pigment
ES378984A1 (en) Process for the manufacture of nitrous oxide
GB1221426A (en) Improvements in or relating to the manufacture of composite ferrites
GB1266494A (en)
JPS55154321A (en) Manufacture of magnetic oxide particle
GB936920A (en) Fixation of radioactive components
GB717269A (en) Magnetizable metal oxides
GB1253807A (en) Improvements in or relating to preparation of ceramic materials
GB1164318A (en) Catalysts and the preparation thereof
GB1281112A (en) A method of preparing catalysts
GB839860A (en) Improvements in or relating to ferromagnetic ferrite materials
GB1205539A (en) Microwave ferrites
GB1476642A (en) Zirconium hydrous oxide product
CA1044015A (en) Process for calcining radioactive wastes containing sodium nitrate
GB1246272A (en) Improvements in or relating to inorganic oxides
GB1286468A (en) Improvements in or relating to magnetic materials
GB919052A (en) Improvements in or relating to the manufacture of sintered metallic bodies
GB1406503A (en) Magnetic materials
GB893425A (en) Improvements in or relating to the manufacture of sintered copper bodies
FR2052865A5 (en) Ferromagnetic chromium dioxide by pressure - independent process
GB976954A (en) Improvements in manufacturing manganeze zinc ferrite bodies
GB645056A (en) Improved process of manufacturing magnetic material
GB1177439A (en) Catalyst for the Catalytic Gas Phase-Oxidation of Propylene or Acrolein into Acrylic Acid
GB1236035A (en) Europium activated vanadate phosphor