A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Ignitability characteristics of aluminium and magnesium dusts that are generated during the shredding of post-consumer wastes
The authors investigated the ignitability of aluminium and magnesium dusts that are generated during the shredding of post-consumer waste. The relations between particle size and the minimum explosive concentration, the minimum ignition energy, the ignition temperature of the dust clouds, etc. the relation between of oxygen concentration and dust explosion, the effect of inert substances on dust explosion, etc. were studied experimentally. The minimum explosive concentration increased exponentially with particle size. The minimum explosive concentrations of the sample dusts were about 170 g/m3 (aluminium) and 90 g/m3 (magnesium). The minimum ignition energy tended to increase with particle size. It was about 6 mJ for the aluminium samples and 4 mJ for the magnesium samples. The ignition temperature of dust clouds was about 750 deg C for aluminium and about 520 deg C for magnesium. The lowest concentrations of oxygen to produce a dust explosion were about 10% for aluminium and about 8% for magnesium. A large mixing ratio (more than about 50%) of calcium oxide or calcium carbonate was necessary to decrease the explosibility of magnesium dust. The experimental data obtained in the present investigation will be useful for evaluating the explosibility of aluminium and magnesium dusts generated in metal recycling operations and thus for enhancing the safety of recycling plants.
Ignitability characteristics of aluminium and magnesium dusts that are generated during the shredding of post-consumer wastes
The authors investigated the ignitability of aluminium and magnesium dusts that are generated during the shredding of post-consumer waste. The relations between particle size and the minimum explosive concentration, the minimum ignition energy, the ignition temperature of the dust clouds, etc. the relation between of oxygen concentration and dust explosion, the effect of inert substances on dust explosion, etc. were studied experimentally. The minimum explosive concentration increased exponentially with particle size. The minimum explosive concentrations of the sample dusts were about 170 g/m3 (aluminium) and 90 g/m3 (magnesium). The minimum ignition energy tended to increase with particle size. It was about 6 mJ for the aluminium samples and 4 mJ for the magnesium samples. The ignition temperature of dust clouds was about 750 deg C for aluminium and about 520 deg C for magnesium. The lowest concentrations of oxygen to produce a dust explosion were about 10% for aluminium and about 8% for magnesium. A large mixing ratio (more than about 50%) of calcium oxide or calcium carbonate was necessary to decrease the explosibility of magnesium dust. The experimental data obtained in the present investigation will be useful for evaluating the explosibility of aluminium and magnesium dusts generated in metal recycling operations and thus for enhancing the safety of recycling plants.
Ignitability characteristics of aluminium and magnesium dusts that are generated during the shredding of post-consumer wastes
Zündverhalten von Aluminiumstaub und Magnesiumstaub, entstanden durch Shreddern von Haushaltsabfällen
Nifuku, M. (author) / Koyanaka, S. (author) / Ohya, H. (author) / Barre, C. (author) / Hatori, M. (author) / Fujiwara, S. (author) / Horiguchi, S. (author) / Sochet, I. (author)
2007
8 Seiten, 14 Bilder, 8 Quellen
Conference paper
English
Recycling Post-Consumer Hospital Wastes
| British Library Conference Proceedings | 1994
On ignitability of certain powder materials
| Engineering Index Backfile | 1964
Shredding device and a method using such a shredding device
| European Patent Office | 2020
| British Library Conference Proceedings | 1992