中南大学学报（自然科学版）2017，Vol.48Issue(6)：1629-1634,6.DOI:10.11817/j.issn.1672-7207.2017.06.029
机械力作用诱导硫化矿石自燃的微观机理
Microscopic mechanism of mechanical forces to induce spontaneous combustion of sulfide ores
摘要
Abstract
In order to understand the essential mechanism of mechanical activation for spontaneous combustion of sulfide ores,a typical sample was obtained from the sulfur-rich mine to make the mechanical activation experiment.The surface morphology and microstructure of samples activated at different mechanical powers (100,200,300,350,400,450 r/min) were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis.Further oxidation experiment was made at constant temperature and humidity,and the oxidation mass gain rates of the activated samples were compared.The results show that small particles and agglomeration effects are formed after sulfide ores undergo mechanical activation by different mechanical powers.The lattice distortion of sulfide ores increases and the domain size reduces,and the oxidation rate accelerates.Sulfide ores are prone to oxidation after mechanical actions by the increased activation,which leads to spontaneous combustion under appropriate conditions ultimately.关键词
硫化矿石/机械力作用/氧化质量增大率/自燃机理Key words
sulfide ores/mechanical action/oxidation mass gain/spontaneous combustion mechanism分类
资源环境引用本文复制引用
阳富强,刘广宁,刘晓霞..机械力作用诱导硫化矿石自燃的微观机理[J].中南大学学报（自然科学版）,2017,48(6):1629-1634,6.基金项目
国家自然科学基金资助项目(51304051) （51304051）
福建省自然科学基金资助项目(2016J01224) （2016J01224）
福建省高校杰出青年科研人才培养计划项目(83016018) (Project(51304051) supported by the National Natural Science Foundation of China （83016018）
Project(2016J01224) supported by the Natural Science Foundation of Fujian Province （2016J01224）
Project (83016018) supported by the Talent Development Program for Distinguished College Young Scholars of Fujian Province) （83016018）
