JPS56118483A - Treatment of phosphor - Google Patents

Treatment of phosphor

Info

Publication number
JPS56118483A
JPS56118483A JP2214180A JP2214180A JPS56118483A JP S56118483 A JPS56118483 A JP S56118483A JP 2214180 A JP2214180 A JP 2214180A JP 2214180 A JP2214180 A JP 2214180A JP S56118483 A JPS56118483 A JP S56118483A
Authority
JP
Japan
Prior art keywords
phosphor
washed
solid
treatment
acid
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.)
Pending
Application number
JP2214180A
Other languages
Japanese (ja)
Inventor
Akihide Mizukami
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2214180A priority Critical patent/JPS56118483A/en
Publication of JPS56118483A publication Critical patent/JPS56118483A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

  • Luminescent Compositions (AREA)

Abstract

PURPOSE: To obtain a good reusable phosphor, by a method wherein a recovered solid phophor is washed with a chelating agent or an org. acid before or after sintering treatment and, thereafter, washed with water.
CONSTITUTION: The phosphor to be recovered is collected as a solid suspension. Subsequently, the solid phosphor separated from said solid suspension by a centrifugal separator or the like is washed with a few persent solution of a chelating agent, for example, ethylenediamine-N,N,N',N'-tetraacetic acid or an org. acid, for example, oxalic acid before or after sintering treatment and, further, subjected to water washing treatment to remove metal ions, especially, chromium ion by washing.
COPYRIGHT: (C)1981,JPO&Japio
JP2214180A 1980-02-22 1980-02-22 Treatment of phosphor Pending JPS56118483A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2214180A JPS56118483A (en) 1980-02-22 1980-02-22 Treatment of phosphor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2214180A JPS56118483A (en) 1980-02-22 1980-02-22 Treatment of phosphor

Publications (1)

Publication Number Publication Date
JPS56118483A true JPS56118483A (en) 1981-09-17

Family

ID=12074591

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2214180A Pending JPS56118483A (en) 1980-02-22 1980-02-22 Treatment of phosphor

Country Status (1)

Country Link
JP (1) JPS56118483A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57170978A (en) * 1981-04-15 1982-10-21 Toshiba Corp Treatment of fluorescent substance
JPS63154784A (en) * 1986-12-17 1988-06-28 Toshiba Corp Method of regenerating phosphor
JPH03217483A (en) * 1990-01-22 1991-09-25 Kasei Optonix Co Ltd Treatment of fluorescent substance

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57170978A (en) * 1981-04-15 1982-10-21 Toshiba Corp Treatment of fluorescent substance
JPS63154784A (en) * 1986-12-17 1988-06-28 Toshiba Corp Method of regenerating phosphor
JPH0463119B2 (en) * 1986-12-17 1992-10-08 Tokyo Shibaura Electric Co
JPH03217483A (en) * 1990-01-22 1991-09-25 Kasei Optonix Co Ltd Treatment of fluorescent substance

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