| 摘要 |
PROBLEM TO BE SOLVED: To recover lead bullets as a contamination source from contaminated earth where lead bullets are scattered, without leading to secondary contamination. SOLUTION: This lead bullet recovering system for recovering the lead bullets scattered in earth and sand, comprises an air supply device, a crushing device 211 having an injection nozzle for injecting the air from the air supply device, a circular pipe conduit 213 forming the air flow circularly flowing along a horizontal face by the air injected from the injection nozzle, an introducing portion 214 for introducing the earth and sand including the scattered lead bullets to the circular pipe conduit 213, and a leading-out portion 216 for leading out the lead bullets circulated in the circular pipe conduit 213 in accompany with the air flow with the earth and sand introduced from the introducing portion 214 and crushed, to an outer peripheral side of a circulating locus, and a classifying device 230 for classifying the earth and sand, and the lead bullets led out from the crushing device 211. COPYRIGHT: (C)2007,JPO&INPIT
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