Patent Number: 046718974
Section: claims

1. In a process for solidification of radioactive waste comprising the steps of: drying a water-soluble salts containing radioactive waste;  shaping said dried radioactive waste into granules;  microencapsulating said granules into water insoluble salts containing radioactive waste in microencapsulation solvents; and  solidifying said microencapsulated radioactive waste with a hydraulic solidifier in a solidification vessel;  the improvement comprising:  said step of microencapsulating employing said microencapsulation solvents that are a dichloromethane solution and a hexane;  said microencapsulating step including a first step of mixing the granules with the dichloromethane solution, thereafter the second step of cooling the mixture and removing supernatant and separating the capsules formed, and the third step of hardening the wall membrane of the capsules by adding cold hexane and thereafter drying the capsules.  drying a water-soluble salts containing radioactive waste;  shaping said dried radioactive waste into granules;  microencapsulating said granules into water insoluble salts containing radioactive waste in microencapsulation solvents; and  solidifying said microencapsulated radioactive waste with a hydraulic solidifier in a solidification vessel;  the improvement comprising;  said step of microencapsulating employing said microencapsulation solvents that are a dichloromethane solution and a hexane.  said dichloromethane solution is an ethylcellulose solution, and said hexane is n-hexane.  said ethylcellulose solution is about 9% weight. 2. A process for solidification of radioactive waste according to claim 1, wherein said dichloromethane solution is an ethylcellulose solution, and said hexane is n-hexane. 3. A process for solidification of radioactive waste according to claim 2, wherein said ethylcellulose solution is about 9% weight. 4. A process for solidification of radioactive waste according to claim 2, wherein said step of solidifying adds the solidifier up to about 50 WT %. 5. In a process for solidification of radioactive waste comprising the steps of: 6. A process for solidification of radioactive waste according to claim 5, wherein 7. A process for solidification of radioactive waste according to claim 6, wherein 8. A process for solidification of radioactive waste according to claim 6, wherein said step of solidifying adds the solidifier up to about 50 WT %. 9. A process for solidification of radioactive waste according to claim 5, wherein said step of solidifying adds the solidifier up to about 50 WT %.