粒径分布对石灰岩矿爆破粉尘表面润湿特性的影响  

Influence of Particle Size Distribution on Wetting Characteristics of Blasting Dust in a Limestone Mine

作　　者：袁树杰[1,2] 黄永奇 YUAN Shujie;HUANG Yongqi(Key Laboratory of Coal Mine Safe and Efficient Mining,Ministry of Education,Huainan Anhui 232001,China;School of Safety Science and Engineering,Anhui University of Science and Technology,Huainan Anhui 232001,China)

机构地区：[1]煤矿安全高效开采省部共建教育部重点实验室,安徽淮南232001 [2]安徽理工大学安全科学与工程学院,安徽淮南232001

出　　处：《佳木斯大学学报（自然科学版）》2024年第4期60-62,82,共4页Journal of Jiamusi University：Natural Science Edition

摘　　要：为探究露天石灰岩矿爆破粉尘的表面润湿特性,以安徽省铜陵石灰石矿山爆破粉尘为研究对象,利用激光粒度分析仪、X射线衍射仪以及扫描电子显微镜分别测量粉尘的粒径分布、矿物成分和表面形貌,分析其对石灰岩爆破粉尘润湿特性的影响。通过对比实验数据分析,得出:亲水性粉尘(HD)平均粒径D(4,3)要比疏水性粉尘(HCD)大2.416μm,更易被湿润;两者可被人体吸入粉尘(粒径≤10μm)占比分别为24.34%,28.08%,HCD更有可能导致人们患呼吸性疾病;HD的表面形貌比HCD更光滑平整,相应的具有更好的湿润性能。In order to investigate the surface wetting characteristics of blasting dust from an open-pit limestone mine,the blasting dust from Tongling limestone mine in Anhui Province was studied,the influence of particle size distribution,mineral composition and surface morphology of dust on the wetting characteristics of limestone blasting dust was analyzed by using laser particle size analyzer,X-ray diffraction(XRD)and Scanning electron microscope.The results showed that the average particle size D(4.3)of hydrophilic dust(HD)was 2.416μm larger than that of hydrophobic dust(HCD),and the percentage of inhaled HD and HCD(particle size≤10μm)was 24.34%and 28.08%,respectively,HCD is more likely to cause respiratory diseases,and the surface morphology of HD is smoother and smoother than that of HCD,with corresponding better wet ability.

关 键 词：矿尘防治 石灰石粉尘 润湿性能 表面特性 

分 类 号：TD717[矿业工程—矿井通风与安全]