| 摘要 |
PROBLEM TO BE SOLVED: To provide a low-level radioactive miscellaneous solid waste volume reduction method capable of treating safely a large quantity of nonmetal solid waste by using a simpler constitution. SOLUTION: A lifting stand 2 for inserting a canister 10 into this induction furnace is equipped with a driving device 3 capable of stopping at an optional position and supporting the stand. At first, the low-level radioactive miscellaneous solid waste having much metal is stored in the canister 10, and an electromagnetic coil 1 is placed on the position of a metal layer 11 in the canister until the metal is fused, to thereby heat mainly the metal layer, and nonmetal is also fused by heat transfer. When a nonmetal layer 12 is formed, nonmetal waste is inputted, and the relative position of the electromagnetic coil 1 is moved up to the position especially facing to a conductive sleeve 4 in the nonmetal layer 12, to thereby heat mainly the nonmetal, and the output of the electromagnetic coil 1 is adjusted so that the temperature of the metal layer 11 is maintained at a lower value than a damage temperature of a furnace wall.
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