Influence of the Magnesium Content on the Explosion Properties of Mg-Al Alloy Dusts

Abstract

-Using the Siwek 20 L spherical explosion vessel, the explosion properties have been examined to understand the influence of magnesium content in Mg-Al alloy dusts with different concentration. For this purpose, the Mg-Al alloy dusts (volume mean diameter : 151~160 μm) with magnesium content ratio were used. As the results, the increase of Mg content in Mg-Al alloy causes an decreased minimum explosion concentration and an increased maximum explosion pressure. Also the maximum explosion pressure and maximum rate of pressure rise in Mg-Al alloy dusts mainly depended on the dust concentrations. However, for the explosion index (Kst) of Mg-Al (40:60 wt%), Mg-Al (50:50 wt%) and Mg-Al (60:40 wt%), it was founded to increase the Kst with increasing of magnesium content ratio.

Effect of Mean Diameter on the Explosion Characteristic of Magnesium Dusts

“…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] …”