| 摘要 |
<p>PURPOSE:To separate and collect uranium, plutonium and useful platinum group elements efficiently by washing purified sludge generated in purifying process with washing liquid including nitric oxidizing agent and heating then to collect ruthenium evaporated and then separating and collecting useful material out of the mashing liquid. CONSTITUTION:Pure sludge 2 generating in the purification process 1 is washed with a washing material including nitric oxidizing agent to solve uranium and plutonium in the washing liquid and this washing liquid is plated to evaporate and recover ruthenium. By way of filtering process 5, the washing liquid 6 is sent to an extraction process 7. Out of the sludge a molybden and technetium are separated and recovered 11. Then out of the solution cadmium liquid. Rhodium is separated and collected 13. Besides, paradium is separated and collected 15 out of the solution cadmium liquid. Finally the sludge in which only unnecessary materials are left is recovered by glassification.</p> |
