JPS573879A - Method of recovering and purifying fluorescent substance - Google Patents

Method of recovering and purifying fluorescent substance

Info

Publication number
JPS573879A
JPS573879A JP7820780A JP7820780A JPS573879A JP S573879 A JPS573879 A JP S573879A JP 7820780 A JP7820780 A JP 7820780A JP 7820780 A JP7820780 A JP 7820780A JP S573879 A JPS573879 A JP S573879A
Authority
JP
Japan
Prior art keywords
water
fluorescent substances
fluorescent substance
slurry
pure water
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.)
Granted
Application number
JP7820780A
Other languages
Japanese (ja)
Other versions
JPS6014053B2 (en
Inventor
Takashi Ishii
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP55078207A priority Critical patent/JPS6014053B2/en
Publication of JPS573879A publication Critical patent/JPS573879A/en
Publication of JPS6014053B2 publication Critical patent/JPS6014053B2/en
Expired 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 recover and purify effectively fluorescent substances in cleaning water and developing water when manufacturing emission screens of color television cathode ray tubes, by suspending the recovered fluorescent substances in pure water and treating them with a removing agent made of isotactic polypropylene.
CONSTITUTION: After the dehydration with acentrifuge of photosensitive fluorescent substance slurry recovered with cleaning water and developing water when manufacturing emission screens of color television cathode ray tubes, the slurry is put into a tank 7 and pure water is added to it to wash it with water rotating a stirrer 8, and then the upper clean water in removed by decantation before pure water is again is removed by decantation before pure water is again added to fully suspend the fluorescent substances. Thereafter, the fluorescent substance suspension A is reacted with a nonwoven textile 6 made of isotactic polypropylene for 60W180min before it is filtered with a centrifuge to recover the fluorescent substances. The reuse of the recovered fluorescent substances as the raw material for the photosensitive fluorescent substances slurry provides the photosensitive fluorescent substance slurry which can form uniform coating having no extremely thin coating portions in the form of a circle or stripe on the photosensitive fluorescent substance coating formed on a face panel.
COPYRIGHT: (C)1982,JPO&Japio
JP55078207A 1980-06-09 1980-06-09 Phosphor recovery and purification method Expired JPS6014053B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55078207A JPS6014053B2 (en) 1980-06-09 1980-06-09 Phosphor recovery and purification method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55078207A JPS6014053B2 (en) 1980-06-09 1980-06-09 Phosphor recovery and purification method

Publications (2)

Publication Number Publication Date
JPS573879A true JPS573879A (en) 1982-01-09
JPS6014053B2 JPS6014053B2 (en) 1985-04-11

Family

ID=13655580

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55078207A Expired JPS6014053B2 (en) 1980-06-09 1980-06-09 Phosphor recovery and purification method

Country Status (1)

Country Link
JP (1) JPS6014053B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62116899A (en) * 1985-10-22 1987-05-28 ロイアル・オ−ドナンス・ピ−・エル・シ− Explosive firing body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62116899A (en) * 1985-10-22 1987-05-28 ロイアル・オ−ドナンス・ピ−・エル・シ− Explosive firing body

Also Published As

Publication number Publication date
JPS6014053B2 (en) 1985-04-11

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