CA969347A - Method of recovering a rare earth phosphor - Google Patents

Method of recovering a rare earth phosphor

Info

Publication number
CA969347A
CA969347A CA115,070A CA115070A CA969347A CA 969347 A CA969347 A CA 969347A CA 115070 A CA115070 A CA 115070A CA 969347 A CA969347 A CA 969347A
Authority
CA
Canada
Prior art keywords
recovering
rare earth
earth phosphor
phosphor
rare
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
CA115,070A
Other languages
English (en)
Other versions
CA115070S (en
Inventor
Dirk Barneveld
Johannes A.M. Dikhoff
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of CA969347A publication Critical patent/CA969347A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/01—Recovery of luminescent materials
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F17/00—Compounds of rare earth metals
    • C01F17/20—Compounds containing only rare earth metals as the metal element
    • C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
    • C01F17/218—Yttrium oxides or hydroxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F17/00—Compounds of rare earth metals
    • C01F17/20—Compounds containing only rare earth metals as the metal element
    • C01F17/288—Sulfides
    • C01F17/294—Oxysulfides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Luminescent Compositions (AREA)
CA115,070A 1970-06-13 1971-06-08 Method of recovering a rare earth phosphor Expired CA969347A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7008684A NL7008684A (enExample) 1970-06-13 1970-06-13

Publications (1)

Publication Number Publication Date
CA969347A true CA969347A (en) 1975-06-17

Family

ID=19810319

Family Applications (1)

Application Number Title Priority Date Filing Date
CA115,070A Expired CA969347A (en) 1970-06-13 1971-06-08 Method of recovering a rare earth phosphor

Country Status (7)

Country Link
JP (1) JPS524513B1 (enExample)
BE (1) BE768449A (enExample)
CA (1) CA969347A (enExample)
DE (1) DE2126892C3 (enExample)
FR (1) FR2095235B1 (enExample)
GB (1) GB1333329A (enExample)
NL (1) NL7008684A (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2448498C3 (de) * 1974-10-11 1981-11-12 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zum Wiedergewinnen eines Oxidleuchtstoffes der Seltenen Erden
US9234128B2 (en) * 2012-08-27 2016-01-12 General Electric Company Chemical bleaching for improved performance of recycled lamp phosphors

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523904A (en) * 1967-08-28 1970-08-11 Motorola Inc Process for reclaiming contaminated phosphors

Also Published As

Publication number Publication date
FR2095235A1 (enExample) 1972-02-11
BE768449A (fr) 1971-12-13
JPS524513B1 (enExample) 1977-02-04
FR2095235B1 (enExample) 1976-03-19
GB1333329A (en) 1973-10-10
DE2126892B2 (de) 1978-05-03
DE2126892C3 (de) 1979-01-04
DE2126892A1 (de) 1971-12-16
NL7008684A (enExample) 1971-12-15

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