Ignitability characteristics of aluminium and magnesium dusts that are generated during the shredding of post-consumer wastes

Nifuku, Masaharu; Koyanaka, Shigeki; Ohya, Hiroaki; Barre, C.; Hatori, Makiko; Fujiwara, S.; Horiguchi, S.; Sochet, Isabelle

doi:10.1016/j.jlp.2007.04.034

Cited by 79 publications

(23 citation statements)

References 2 publications

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“…The minimum explosive concentration were about 170 g/m 3 (0-8 μm), 180 g/m 3 (8-20 μm), 200 g/m 3 (20-37 μm), 240 g/m 3 (over than 37 μm). The minimum ignition energy were 8 mJ (0-8 μm), 6 mJ (8-20 μm), 14 mJ (20-37 μm), 48 mJ (over than 37 μm) (Nifuku et al, 2007). The minimum ignition energy of nano-Ti, Fe are less than 1mJ (Wu et al, 2009), That meaning of nano-Ti, Fe are very sensitivity for dust explosion.…”

Section: Introductionmentioning

confidence: 89%

Explosion Characteristics of Aluminum Nanopowders

Wu¹,

Ou²,

Hsiao³

et al. 2010

Aerosol Air Qual. Res.

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In 2005, an investigation conducted on three nanoscale attrition millers in Taiwan revealed that all three had undergone metal nanopowder explosions in the past. This research was aimed at determining the relationships between the particle diameter of an aluminum nanopowder and its maximum explosion pressure (P max ), maximum rate of pressure rise ((dP/dt) max ), minimum explosion concentration (MEC), and minimum ignition energy (MIE) by 20 liter apparatus and 1.2-L Hartmann apparatus. The results revealed that 35-nm aluminum powder has a P max of 7.3 bar and deflagaration index (K St ) of 349 bar·m/s, in 100-nm aluminum powder, P max of 12.5 bar and K St of 296 bar·m/s and 40-μm aluminum powder, P max of 5.9 bar and K St of 77 bar·m/s. The value of (dP/dt) max for the 35-nm aluminum powder is 4.5 times that for the 40-μm aluminum powder. The 35-nm, 100-nm, and 40-μm powders have MEC values of 40, 50, and 35 g/m 3 , respectively. The 35-nm and 100-nm powders both have MIEs less than 1 mJ, while the 40-μm powder has an MIE of 59.7 mJ.

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Section: Introductionmentioning

confidence: 89%

Explosion Characteristics of Aluminum Nanopowders

Wu¹,

Ou²,

Hsiao³

et al. 2010

Aerosol Air Qual. Res.

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“…분진입경이 1 μm이상의 마이크로 크기의 Al 분 진의 폭발특성에 대한 조사는 많이 알려지고 있는 데, 예를 들면 Al 분진의 발화위험성에 미치는 산소 량의 영향 [4], Al 분진의 발화과정특성 [5], 공기중 분 무상태의 Al 미세 분진의 연소특성 [6], Al 분진의 발 화온도특성 [7], Al의 연소메커니즘 [8] 등과 같이 많 은 연구자들에 의해 연구되어 왔다. 반면에 나노 크 기의 Al 분진에 대한 연구로서는 저온에서의 발화 특성 [9][10] …”

Section: 나노 및 마이크로 입자 알루미늄의 폭발 특성unclassified

Explosion Properties of Nano and Micro-sized Aluminium Particles

Han¹,

Lee²

2014

Journal of the Korean Institute of Gas

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-Explosion characteristics of micro-sized aluminum dusts had been studied by many researchers, but the research of nano-sized aluminum dusts were very insufficient. In this study, an experimental investigation was carried out on the influences of nano and micro-sized aluminum dusts (70 nm, 100 nm, 6 μ m, 15 μm) on dust explosion properties of aluminum particles by using 20 L explosion apparatus. With decreasing of particle size in suspended aluminum dusts, the LEC (lower explosion concentration) of nano-sized aluminum is lower than that of micro-sized aluminum. The particle size change of nano-sized aluminum dusts seems no obvious explosion differences than that of micro-sized aluminum dusts. From the observation of nano-sized aluminum particles by TEM (Transmission Electron Microscopy), it is estimated that increase of particles aggregation may have effects on the explosion characteristics of aluminum nanopowders.

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“…Mg분진의 화재폭발특성에 대한 기존 연구를 살펴 보면 화염전파를 설명하기 위한 연소 거동을 이론적 으로 조사한 경우도 있지만 [2], 대부분은 Mg의 폭발 위험성에 대한 연구가 수행되어 보고되고 있다 [3][4][5][6][7][8][9]. Matsuda [4] 및 Nifuku [5]는 금속분진의 종류별 폭 발압력특성을 조사하였으며, Li [5][6] …”

Section: Fig 1 Particle Distributions Of Mg Sample Dustsunclassified

Effect of Mean Diameter on the Explosion Characteristic of Magnesium Dusts

Han¹,

Lee²

2013

Journal of the Korean Institute of Gas

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-A study was carried out on the effect of particle size (mean diameter) on magnesium dust explosion. Experimental investigations were conducted in a 20-L explosion sphere, using 10 kJ chemical ignitors. Explosion tests were performed with three different dusts having mean diameter (38, 142, 567 μm) and the dust concentrations were up to 2250 g/m 3 . The lower explosion limits(LEL) of magnesium dusts were about 30 g/m 3 at 38 μm and 40 g/m 3 at 142 μm. LEL tended to increase with particle size and this means that the explosion probability of magnesium dust decreased with increase of particle size. The maximum explosion presssure (Pm) and Kst (Explosion index) decreased with the increase of particle size. For magnesium powder of 567 μm, however, the explosive properties were not observed in the 5 kJ ignition energy.

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Ignitability characteristics of aluminium and magnesium dusts that are generated during the shredding of post-consumer wastes

Cited by 79 publications

References 2 publications

Explosion Characteristics of Aluminum Nanopowders

Explosion Characteristics of Aluminum Nanopowders

Explosion Properties of Nano and Micro-sized Aluminium Particles

Effect of Mean Diameter on the Explosion Characteristic of Magnesium Dusts

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