Tantalum dust deflagration in a bag filter dust-collecting device

摘要

An accidental tantalum powder deflagration with casualties occurred during the operation of a bag filter dust-collecting device. To understand the mechanism of the incident and its material hazards, experiments for determining the combustibility and ignition characteristics of the tantalum powder were performed. The magnitude of the tantalum dust explosion is classified as severe (K_st=273), contrary to the classification found in the preceding literature.