FIELD: technical physics. SUBSTANCE: ceramic tubes from burners of sodium VAPOR high-pressure lamps are rebuilt by treatment of burners in solution of nitric acid with concentration of 10-25% at temperature from 40 to 50 C for 20-30 h. Then used solution of nitric acid is treated with 2-34% aqueous solution of ammonia to pH = 9-10. After this solution is filtered, residue is dried at 100-150 C and is calcined at temperature exceeding 400 C. Filtrate is treated with 4-50% solution of sodium hydroxide to pH = 11-12. After this additional filtering of solution is performed and filtrate is treated with 4-40% solution of hydrochloric acid to pH = 7-8. EFFECT: enhanced efficiency of process.
| Title | Year | Author | Number |
|---|---|---|---|
| BURNER OF SODIUM VAPOR HIGH-PRESSURE LAMP | 1992 |
|
RU2014667C1 |
| LIGHT-DIFFUSING COATING FOR LIGHT SOURCES | 1992 |
|
RU2036535C1 |
| CURRENT LEAD-IN INTO BURNER OF HIGH-PRESSURE SODIUM VAPOR LAMP | 1990 |
|
RU2007779C1 |
| FURNACE FOR BRAZING OF NO-EXHAUST TUBE BURNERS OF GASEOUS-DISCHARGE LAMPS | 1990 |
|
RU2010375C1 |
| METHOD FOR RECLAMATION OR ARC TUBE PARTS IN SODIUM-VAPOR HIGH-PRESSURE LAMPS | 1996 |
|
RU2109366C1 |
| COMPACT FLUORESCENT LAMP | 0 |
|
SU1601658A1 |
| METHOD OF PERFORMING QUALITY CONTROL OF DISCHARGE TUBES OF GASEOUS-DISCHARGE LAMPS | 0 |
|
SU1285543A1 |
| DEVICE FOR COLLECTION AND CLEANING OF XENON FROM FURNACE | 1991 |
|
RU2017257C1 |
| METHOD OF SELECTIVE EXTRACTION OF EUROPIUM AND YTTRIUM FROM THE WASTE PRODUCTS OF PHOSPHORS | 2016 |
|
RU2622474C1 |
| METHOD OF SEPARATION OF PALLADIUM FROM NITRATE SOLUTIONS (VERSIONS) | 2001 |
|
RU2195518C1 |
