TY - JOUR A1 - Guo, Yongzheng A1 - Ren, Kaiyue A1 - Huang, Weixing A1 - Wu, Dejian T1 - An alternative explosion criterion of combustible dusts based on combustion duration time: Applications for minimum explosion concentration and limiting oxygen concentration T2 - Powder Technology N2 - minimum explosion concentration (MEC) and limiting oxygen concentration (LOC) in our recent works. This work further studies the reasonability and reliability of the alternative method experimentally and theoretically. Six different dust samples were tested via a 20-L spherical explosion chamber. The experimental results showed that the data of MEC and LOC determined by using the alternative and the standardized methods are in good agreement. The minimum flame propagation velocity (Sf) and the corresponding maximum combustion duration time (tc) were found at its MEC and LOC, suggesting that the theoretical analysis can well explain all the experimental data. It is the first time to study the theoretical basis of the explosion criterion, thus helping to improve our understandings of dust explosion characteristics, and to amend the explosion criterion in future test standards. PB - Elsevier BV CY - Amsterdam KW - General Chemical Engineering PY - 2022 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/59323 AN - OPUS4-59323 SN - 0032-5910 VL - 409 SP - 1 EP - 13 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany