TY - CONF A1 - Krause, Ulrich A1 - Wappler, Mike A1 - Radzewitz, S. A1 - Ferrero, Fabio T1 - On the minimum ignition temperature of dust clouds T2 - 6th International Symposium on hazards, prevention, and mitigation of industrial explosions - VI ISHPMIE (Proceedings) T2 - 6th International Symposium on hazards, prevention, and mitigation of industrial explosions CY - Halifax, Canada DA - 2006-08-27 KW - Dust explosions KW - Ignition KW - Hot surfaces KW - Minimum ignition temperature PY - 2006 VL - 1 SP - 68 EP - 76 PB - Dalhousie University CY - Halifax AN - OPUS4-12787 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Klippel, Alexander A1 - Scheid, Marc A1 - Koperski, January A1 - Wappler, Mike A1 - Krause, Ulrich T1 - Influence of dustiness on small-scale vented dust explosions JF - Journal of loss prevention in the process industries N2 - A new safety characteristic the 'dustiness' according to VDI 2263 – part 9 (Verein Deutscher Ingenieure, 2008) is investigated. Dustiness means the tendency of a dust to form clouds. The paper deals with the physical reasons for the different behavior of dusts, even if they have similar properties such as particle size and density and the influence of the dustiness on dust explosions. In order to study the effects of the dustiness on dust cloud formation for different dispersion methods experiments in a vertical dust dispersion glass tube apparatus were carried out. Furthermore vented dust explosion experiments were done for two different dispersion methods and two static activation pressures. Experiments show that particle size and density are not the only factors which influence dispersibility. Particle shape, specific surface area, flow and dispersion method have an influence which can outweigh size and density. Preliminary explosion experiments showed that the dustiness has an influence on the reduced explosion pressure and flame speed in a vented 75 L test apparatus. In order to verify the results for applications in the process industries further tests with industrial scale experiments are planned. KW - Dust explosion KW - Dustiness KW - Dispersion KW - Venting PY - 2013 DO - https://doi.org/10.1016/j.jlp.2013.09.006 SN - 0950-4230 SN - 1873-3352 VL - 26 SP - 1433 EP - 1441 PB - Butterworth CY - Guildford, Surrey AN - OPUS4-29283 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -