Preliminary study on rapid screening technology of small non-ferrous metal residues in explosive devices

Abstract The remnants of explosive devices contain copper, aluminium, tin and other non-ferrous metals, which often play a key role in the detection of explosive cases. Therefore, compared with the remnants of explosive devices made of plastic and other materials, the discovery and extraction of non-ferrous metals remains is particularly important in the field investigation of explosive cases, especially the small non-ferrous metal remains that are difficult to be found by the naked eyes. It is necessary to study new techniques and methods for the discovery and extraction of residues. In this study, the automatic screening technology of small non-ferrous metal residues in explosive devices is analysed. Through the comparative analysis of various separation and extraction technologies, it is believed that electromagnetic separation technology is expected to be used in the rapid screening of small non-ferrous metal residues in explosive devices.