A catastrophic aluminium-alloy dust explosion in China

Li, G.; Yang, Hongxia; Yuan, Chunmiao; Eckhoff, Rolf K.

doi:10.1016/j.jlp.2015.11.013

Cited by 179 publications

(77 citation statements)

References 6 publications

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“…However, their high activities and high burn rates can result in fatal and devastating explosion accidents without appropriate protections [7,8]. Li et al [9] systemically analyzed the aluminum powder explosion accident in Kunshan on August 2, 2014. The accident caused shocking damages with 75 deaths, 185 injures, and the direct economic loss of 3.51 billion Yuan.…”

Section: Introductionmentioning

confidence: 99%

Effects of Moisture Content on the Minimum Explosible Concentration of Aluminum Powder and the Related Mechanism

et al. 2020

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Aluminum powder has been widely applied to various industries. However, its high activity and high burn rate can cause serious explosion risks. Many factors affecting the explosion of aluminum powder have been determined, yet moisture content has not been included. In the present work, the minimum explosible concentrations of aluminum powders with different moisture contents were measured with a 20-liter explosion test apparatus using the explosion accident in Kunshan, China, as a study case. The experimental results suggest that the minimum explosible concentration of aluminum powder dramatically increases with the increase of its moisture content first and the increasing trend becomes slower as the moisture content further increased. The oxidation time has no significant effects on the minimum explosible concentration of aluminum power in 8 hours at room temperature. Further investigation suggests that the moisture lowers the explosion risk of aluminum powder by altering its surface oxide film, ignition, and combustion process. The low contents of moisture in the range of 0%-8% increase the minimum explosible concentration of aluminum powder by inhibiting the reaction kinetics and particle agglomeration, while high contents of moistures in the range of 8%-20% affect the minimum explosible concentration by the endothermic effect and oxygen dilution effect.

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Section: Introductionmentioning

confidence: 99%

Effects of Moisture Content on the Minimum Explosible Concentration of Aluminum Powder and the Related Mechanism

et al. 2020

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“…The over 2000 • C maximum explosion temperature of aluminum dust, when coupled with explosion-induced overpressure, will cause considerable damages [6][7][8]. A recent example is the catastrophic aluminum dust explosion accident that hit Kunshan Zhongrong Metal Products Co., Ltd., Jiangsu Province, China, on 2 August 2014, which left 146 dead and 91 injured [9]. As such, mitigating or eliminating aluminum dust explosion is of great significance to guaranteeing the safe production for related aluminum product manufacturers.…”

Section: Introductionmentioning

confidence: 99%

Suppression of Aluminum Dust Explosion by Ca(H2PO4)2/RM Composite Powder with Core–Shell Structure: Effect and Mechanism

et al. 2019

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A Ca(H2PO4)2/RM composite powder suppressant with core–shell structure was prepared with modified red mud (RM) as the carrier and Ca(H2PO4)2 as the loaded particles, using a solvent–antisolvent process, in an attempt to suppress aluminum dust explosion more effectively. The suppression effects of the Ca(H2PO4)2/RM composite powder suppressant for aluminum dust flame propagation and for explosion overpressure were tested in a vertical glass tube test apparatus and a 20 L explosion vessel. The results show that the Ca(H2PO4)2/RM composite powder suppressant was more effective in suppressing aluminum dust flame propagation and explosion overpressure than either Ca(H2PO4)2 or RM powder alone. Finally, the suppression mechanism of the Ca(H2PO4)2/RM composite powder suppressant was analyzed. On the one hand, a large amount of burning heat was absorbed through the decomposition of Ca(H2PO4)2 and the melting phase transformation of the decomposition product; on the other hand, the strong isolation provided by the RM helped limit flame propagation. The strong adsorptivity of RM allowed this material to adsorb the radicals from the explosion reaction perfectly.

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“…About 19% of these dust explosions are due to the oxidation of a metal, and aluminum accounts for most of these events . Explosions involving aluminum dust are very severe and many accident reports describe fatalities or other devastating consequences .…”

Section: Introductionmentioning

confidence: 99%

Investigation of the explosion‐related parameters and their influence on the severity of an explosion involving aluminum dust

Balantič¹,

Balantič

Novosel

2019

Process Safety Progress

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Aluminum dust is a serious explosion hazard in the process industry. Therefore, any risk assessment requires knowledge of the data relating to the explosion hazard of the dust. We report on some experimental results that explain the influence of the particle size and the distribution, the specific surface area and the combustible components of various aluminum dusts on their sensitivity and the severity of an aluminum-dust explosion. Three samples of aluminum powder with different particle sizes were analyzed. The results reveal an extremely high maximum pressure rise for one of the samples, which can be assigned to a hybrid explosion caused by the presence of combustible additives in the dust. The results were compared with available literature data for similar dusts, which show that one of the analyzed powders has to be given a higher classification due to its larger K st value, which also means a greater risk of explosion. The presence of a combustible additives in the dust reduces the sensitivity of the aluminum powder, but simultaneously substantially increases the severity of a dust explosion. It can be concluded that two of three investigated cases show a significant difference compared to the literature data, but for different reasons.

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A catastrophic aluminium-alloy dust explosion in China

Cited by 179 publications

References 6 publications

Effects of Moisture Content on the Minimum Explosible Concentration of Aluminum Powder and the Related Mechanism

Effects of Moisture Content on the Minimum Explosible Concentration of Aluminum Powder and the Related Mechanism

Suppression of Aluminum Dust Explosion by Ca(H2PO4)2/RM Composite Powder with Core–Shell Structure: Effect and Mechanism

Investigation of the explosion‐related parameters and their influence on the severity of an explosion involving aluminum dust

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