JPS5594986A - Regeneration of colored phosphor - Google Patents
Regeneration of colored phosphorInfo
- Publication number
- JPS5594986A JPS5594986A JP135379A JP135379A JPS5594986A JP S5594986 A JPS5594986 A JP S5594986A JP 135379 A JP135379 A JP 135379A JP 135379 A JP135379 A JP 135379A JP S5594986 A JPS5594986 A JP S5594986A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- inorganic pigment
- colored
- gelatin
- wash
- 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
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title abstract 5
- 230000008929 regeneration Effects 0.000 title 1
- 238000011069 regeneration method Methods 0.000 title 1
- 239000001023 inorganic pigment Substances 0.000 abstract 3
- 230000018044 dehydration Effects 0.000 abstract 2
- 238000006297 dehydration reaction Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 239000007800 oxidant agent Substances 0.000 abstract 2
- 238000004381 surface treatment Methods 0.000 abstract 2
- 108010010803 Gelatin Proteins 0.000 abstract 1
- 229920000084 Gum arabic Polymers 0.000 abstract 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract 1
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract 1
- 239000000205 acacia gum Substances 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- JOSWYUNQBRPBDN-UHFFFAOYSA-P ammonium dichromate Chemical compound [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O JOSWYUNQBRPBDN-UHFFFAOYSA-P 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 238000005119 centrifugation Methods 0.000 abstract 1
- 238000010908 decantation Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 229920000159 gelatin Polymers 0.000 abstract 1
- 239000008273 gelatin Substances 0.000 abstract 1
- 235000019322 gelatine Nutrition 0.000 abstract 1
- 235000011852 gelatine desserts Nutrition 0.000 abstract 1
- GFKJCVBFQRKZCJ-UHFFFAOYSA-N oxygen(2-);yttrium(3+);trisulfide Chemical compound [O-2].[O-2].[O-2].[S-2].[S-2].[S-2].[Y+3].[Y+3].[Y+3].[Y+3] GFKJCVBFQRKZCJ-UHFFFAOYSA-N 0.000 abstract 1
- 239000000049 pigment Substances 0.000 abstract 1
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 abstract 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 abstract 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
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 regenerate red-luminescent Eu-acitvated yttrium oxysulfide by a method wherein recovered inorganic pigment-coated phosphor undergoes surface treatment by using oxidizing agent and then is deposited with inorganic pigment.
CONSTITUTION: Colored Y2O2S: Eu phosphor recovered from waste development solution as solid component is washed with aq. alkali solution at room temperature to 100°C to dissolve slurry components such as polyvinyl alcohol and ammonium dichromate and pigment binders such as gelatin and polyvinylpyrrolidone. The phospbor is then thoroughly washed by combination of water-wash and decantation or water-wash and centrifugal dehydration. Next, the surface treatment using oxidizing agent such as a 0.002W0.035vol% hydrogen peroxide solution is applied. Then, centrifugation, etc. is carried out for dehydration and drying of phosphor, and supplementary inorganic pigment is deposited by means of gelatin-gum arabic process. This provides reusable colored Y2O2S: Eu phosphor.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP135379A JPS5594986A (en) | 1979-01-12 | 1979-01-12 | Regeneration of colored phosphor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP135379A JPS5594986A (en) | 1979-01-12 | 1979-01-12 | Regeneration of colored phosphor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5594986A true JPS5594986A (en) | 1980-07-18 |
| JPS6123836B2 JPS6123836B2 (en) | 1986-06-07 |
Family
ID=11499119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP135379A Granted JPS5594986A (en) | 1979-01-12 | 1979-01-12 | Regeneration of colored phosphor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5594986A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4000755A1 (en) * | 1990-01-12 | 1991-07-18 | Nokia Unterhaltungselektronik | METHOD FOR RECOVERY OF FLUORESCENT FOR PIPES |
| JPH03247688A (en) * | 1990-02-26 | 1991-11-05 | Kasei Optonix Co Ltd | How to recycle recovered phosphor |
| JPH044286A (en) * | 1990-04-21 | 1992-01-08 | Nichia Chem Ind Ltd | Regeneration of fluorescent substance |
-
1979
- 1979-01-12 JP JP135379A patent/JPS5594986A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4000755A1 (en) * | 1990-01-12 | 1991-07-18 | Nokia Unterhaltungselektronik | METHOD FOR RECOVERY OF FLUORESCENT FOR PIPES |
| JPH03247688A (en) * | 1990-02-26 | 1991-11-05 | Kasei Optonix Co Ltd | How to recycle recovered phosphor |
| JPH044286A (en) * | 1990-04-21 | 1992-01-08 | Nichia Chem Ind Ltd | Regeneration of fluorescent substance |
| US5330791A (en) * | 1990-04-21 | 1994-07-19 | Nichia Kagaku Kogyo K.K. | Method of reclaiming phosphor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6123836B2 (en) | 1986-06-07 |
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