金属铝粉尘粒径特性参数对其爆炸后果影响机理研究  

Research on mechanism of influence of particle size characteristic parameters of metal aluminum dust on its explosion consequences

作　　者：石永国 贾波 牟杰 SHI Yongguo;JIA Bo;MU Jie(Zhejiang Academy of Emergency Management Science,Hangzhou Zhejiang 310012,China;Zhejiang Key Laboratory of Safety Engineering and Technology,Hangzhou Zhejiang 310012,China)

机构地区：[1]浙江省应急管理科学研究院,浙江杭州310012 [2]浙江省安全工程与技术研究重点实验室,浙江杭州310012

出　　处：《工业安全与环保》2025年第3期25-29,共5页Industrial Safety and Environmental Protection

基　　金：浙江省自然科学基金项目(LTGG24E040001);浙江省“尖兵”“领雁”研发攻关计划资助(2022C03162);浙江省科技重点研发计划项目(2021C03151,2022C03065);浙江省公益技术项目(LGG21G010001)。

摘　　要：针对4种不同抛磨工艺下的活泼金属铝材料粉尘,对其在不同抛磨工艺下得到的粉尘特征进行分析,并对粉尘颗粒粒径参数特征对粉尘爆炸后果影响规律和机理进行实验测试和分析。通过分析看出,粉尘粒径分布与抛磨材料、抛磨阶段以及自身材料硬度有关,粉尘形态与打磨阶段关系不大,主要与被打磨的材料相关;粉尘最大爆炸压力主要与参与粉尘的量和比表面积参数相关;粉尘爆炸压力上升指数与自身材料燃烧性质和粉尘中小颗粒粉尘的比率相关;粉尘云的最低着火温度均存在最佳粉尘粒径分布特征范围和最佳粉尘浓度。This study focuses on the dust generated from active metal aluminum materials under four different grind-ing processes.It analyzes the dust characteristics obtained under these processes and experimentally tests and analyzes the effects and mechanisms of dust particle size parameters on the consequences of dust explosions.The analysis rev-eals that the particle size distribution of the dust is related to the grinding material,the grinding stage,and the material's inherent hardness.Dust morphology is not significantly affected by the grinding stage but is mainly related to the ma-terial being ground.The maximum explosion pressure of the dust is primarily associated with the amount of dust in-volved and the specific surface area.The dust explosion pressure index is correlated with the combustion properties of the material itself and the proportion of fine dust particles in the dust cloud.The minimum ignition temperature of the dust cloud shows an optimal range for dust particle size distribution and an optimal dust concentration.

关 键 词：金属铝粉尘 抛磨工艺 粒径特征 爆炸参数 比表面积 

分 类 号：X932[环境科学与工程—安全科学]