FIELD: treatment and burial of high-activity waste. SUBSTANCE: method involves selective extraction of alkaline and alkaline-earth elements by NaA or NaX zeolites using ion exchange procedure, drying, dehydration this being followed by hot molding of ion-containing zeolite until it is transferred to fieldspar phase. For immobilizing strontium, hot molding is conducted at temperature of 800-1000 atm for 1-3 h. EFFECT: improved resistance to leaching, high stability of material obtained (fieldspar matrix) when stored in earth crust. 2 cl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR IMMOBILIZING RADIOACTIVE IODINE IN CERAMIC MATRIX | 1997 |
|
RU2145451C1 |
| METHOD FOR RECOVERY OF SPENT MICROORGANISM BIOMASS USED FOR EXTRACTING RADIONUCLIDES AND HEAVY METALS | 1997 |
|
RU2123733C1 |
| METHOD TO IMMOBILISE RADIOACTIVE WASTES IN MINERAL-LIKE MATRIX | 2010 |
|
RU2439726C1 |
| IMMOBILISATION METHOD OF RADIONUCLIDES OF ALKALINE-EARTH AND RARE-EARTH ELEMENTS IN MINERAL MATRIX | 2010 |
|
RU2444800C1 |
| METHOD OF BURIAL OF RADIOACTIVE WASTE IN ROCKS | 1993 |
|
RU2064696C1 |
| METHOD FOR SINTERING CONCENTRATE OF RARE-EARTH ELEMENTS | 1997 |
|
RU2128377C1 |
| METHOD FOR TREATMENT OF SULFURIC AMMONIUM RADIOACTIVE SOLUTIONS AND METHOD FOR IMMOBILIZING RADIONUCLIDE-CONTAINING DEPOSITS IN GLASS-CERAMICS | 2003 |
|
RU2271587C2 |
| METHOD OF PRODUCING NaA OR NaX ZEOLITE (VERSIONS) | 2011 |
|
RU2452688C1 |
| METHOD OF STABILISING HIGHLY SALINE HIGH-ACTIVITY WASTES | 2008 |
|
RU2381580C1 |
| METHOD FOR RECOVERING SOLID RADIOACTIVE WASTES | 1999 |
|
RU2176830C2 |
