GB1287240A - Improvements relating to phosphor recovery - Google Patents

Improvements relating to phosphor recovery

Info

Publication number
GB1287240A
GB1287240A GB1990871A GB1990871A GB1287240A GB 1287240 A GB1287240 A GB 1287240A GB 1990871 A GB1990871 A GB 1990871A GB 1990871 A GB1990871 A GB 1990871A GB 1287240 A GB1287240 A GB 1287240A
Authority
GB
United Kingdom
Prior art keywords
zns
cds
hypohalite
rare earth
sulphide
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
GB1990871A
Other languages
English (en)
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1287240A publication Critical patent/GB1287240A/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 materials, e.g. electroluminescent or chemiluminescent
    • 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
    • C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
    • C01F17/224—Oxides or hydroxides of lanthanides
    • 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)
GB1990871A 1970-06-13 1971-06-10 Improvements relating to phosphor recovery Expired GB1287240A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7008683A NL160228C (nl) 1970-06-13 1970-06-13 Werkwijze voor het terugwinnen van een luminescerend oxisulfide, vanadaat of oxide van ten minste yttrium en/of een element uit de lanthaanreeks.

Publications (1)

Publication Number Publication Date
GB1287240A true GB1287240A (en) 1972-08-31

Family

ID=19810318

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1990871A Expired GB1287240A (en) 1970-06-13 1971-06-10 Improvements relating to phosphor recovery

Country Status (7)

Country Link
US (1) US3763050A (https=)
JP (1) JPS543158B1 (https=)
BE (1) BE768448A (https=)
CA (1) CA953903A (https=)
FR (1) FR2095234B1 (https=)
GB (1) GB1287240A (https=)
NL (1) NL160228C (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8282703B2 (en) 2010-12-20 2012-10-09 General Electric Company Rare earth recovery from phosphor material and associated method

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864273A (en) * 1972-11-13 1975-02-04 Gen Electric Process for reclaiming rare-earth phosphors
US3954657A (en) * 1973-05-14 1976-05-04 Zenith Radio Corporation Process for reclaiming rare earth oxysulfide phosphor material
US3941714A (en) * 1974-12-23 1976-03-02 Gte Sylvania Incorporated Process for reclaiming rare earth oxysulfide phosphors
DE2720668C3 (de) * 1977-05-07 1980-03-27 Standard Elektrik Lorenz Ag, 7000 Stuttgart Verfahren und Vorrichtung zum Isolieren eines Seltene-Erden-Oxysulfid-Leuchtstoffes aus dem Sediment der Schirmraumabflußkanäle
US4386056A (en) * 1982-07-30 1983-05-31 Westinghouse Electric Corp. Recovery of yttrium and europium from contaminated solutions
US4432948A (en) * 1982-07-30 1984-02-21 U.S. Philips Corporation Recovery of yttrium and europium from contaminated solutions
US4473488A (en) * 1982-10-06 1984-09-25 International Standard Electric Corporation Process for reclaiming rare-earth metallic oxide and/or rare-earth metallic oxysulfide phosphors
FR2589850B1 (fr) * 1985-11-08 1990-08-31 Rhone Poulenc Spec Chim Perfectionnement a un procede de production d'hydroxydes de terres rares par traitement de minerais contenant des phosphates de terres rares
JPH0739577B2 (ja) * 1990-01-22 1995-05-01 化成オプトニクス株式会社 蛍光体の処理方法
JPH075883B2 (ja) * 1990-04-21 1995-01-25 日亜化学工業株式会社 蛍光体の再生方法
US5362459A (en) * 1993-05-17 1994-11-08 Pure-Etch Co. Neodymium recovery process
US8137645B2 (en) * 2010-02-23 2012-03-20 General Electric Company Rare earth recovery from fluorescent material and associated method
CN102766451A (zh) * 2012-06-29 2012-11-07 彩虹集团电子股份有限公司 一种ccfl用三基色荧光粉回收粉的再生方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348924A (en) * 1964-05-28 1967-10-24 Gen Telephone & Elect Recovering excess vanadate phosphor removed from a cathodoluminescent screen
US3360674A (en) * 1964-11-23 1967-12-26 Sylvania Electric Prod Europium and bismuth activated yttrium vanadate phosphor
US3368980A (en) * 1964-12-24 1968-02-13 Gen Telephone & Elect Method of preparing yttrium oxide phosphors
US3474040A (en) * 1965-06-18 1969-10-21 Sylvania Electric Prod Phosphor reclamation
US3523904A (en) * 1967-08-28 1970-08-11 Motorola Inc Process for reclaiming contaminated phosphors
US3577351A (en) * 1969-01-30 1971-05-04 Sylvania Electric Prod Method for the recovery of rare earth oxides
US3625659A (en) * 1970-05-28 1971-12-07 Sylvania Electric Prod Phosphor reclamation from a slurry

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8282703B2 (en) 2010-12-20 2012-10-09 General Electric Company Rare earth recovery from phosphor material and associated method

Also Published As

Publication number Publication date
JPS543158B1 (https=) 1979-02-19
DE2126893B2 (de) 1976-05-26
DE2126893A1 (de) 1971-12-16
NL7008683A (https=) 1971-12-15
BE768448A (fr) 1971-12-13
CA953903A (en) 1974-09-03
FR2095234A1 (https=) 1972-02-11
US3763050A (en) 1973-10-02
FR2095234B1 (https=) 1975-01-17
NL160228C (nl) 1979-10-15
NL160228B (nl) 1979-05-15

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Publication Publication Date Title
GB1287240A (en) Improvements relating to phosphor recovery
US20110206580A1 (en) Rare earth recovery from fluorescent material and associated method
EP0019710B1 (en) Filter-coated phosphor
US3864273A (en) Process for reclaiming rare-earth phosphors
US3625659A (en) Phosphor reclamation from a slurry
US2285464A (en) Preparation of phosphors
GB1289176A (https=)
US3449258A (en) Method for preparing europium activated yttrium oxide and gadolinium oxide phosphors
US4432948A (en) Recovery of yttrium and europium from contaminated solutions
US4386056A (en) Recovery of yttrium and europium from contaminated solutions
US3594117A (en) Process for removing cerium and thorium from the other rare earth metals
US3647706A (en) Phosphor and method of making
US3954657A (en) Process for reclaiming rare earth oxysulfide phosphor material
US3047512A (en) Halophosphate phosphor treatment process
DE19617942C1 (de) Verfahren zur Wiederaufbereitung quecksilber- und phosphathaltiger Seltenerdleuchtstoffgemische
US3717584A (en) Method for preparing rare earth oxide phosphors
US3577351A (en) Method for the recovery of rare earth oxides
US3574131A (en) Process for preparing rare earth oxide phosphors
US3637517A (en) Process for producing phosphors
US3941714A (en) Process for reclaiming rare earth oxysulfide phosphors
US3484381A (en) Method of preparing phosphors
JPH01294789A (ja) 硫化亜鉛蛍光体の製造方法
GB1333329A (en) Phosphor recovery
GB1334176A (en) Methods of providing luminescent chalcogenides with a barrier layer
US3505241A (en) Process for preparing rare earth vanadate phosphors

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee