| 摘要 |
PROBLEM TO BE SOLVED: To provide a lead bullet recovery system capable of efficiently recovering lead bullets, i.e., contaminant from contaminated soil in which the lead bullets are dispersed without causing secondary contamination. SOLUTION: This lead bullet recovery system for recovering the lead bullets dispersed in the soil is provided with a gas feeding device 200; a crushing device 211 having an injection nozzle 212 for injecting air from the gas feeding device 200, an annular conduit 213 for forming an annular air stream by the air injected from the injection nozzle 212, a receiving part 214 for receiving the soil fed to the annular conduit 213, a collision member 215 arranged at at least one position in the annular conduit 213, making the soil accompanying with the air stream collided and crushing it and a discharge part 216 connected to an inner peripheral side of an annular flow passage formed by the annular conduit 213; and a classification device 230 for classifying the soil discharged from the crushing/classification device 211 and the lead bullet. COPYRIGHT: (C)2006,JPO&NCIPI |
