工程科学学报2016，Vol.38Issue(3)：328-334,7.DOI:10.13374/j.issn2095-9389.2016.03.005
基于图像处理的矿石颗粒三维微观孔隙结构演化
3 D micropore structure evolution of ore particles based on image processing
摘要
Abstract
The micropore structure and evolution of copper oxide ore particles before and after acid leaching were investigated by high resolution X-ray micro-computed tomography (micro-CT) and three-dimensional (3D) image analysis. The pore structure param-eters, such as porosity, pore size distribution, pore connectivity and fractal dimension were statistically calculated. The results indi-cate that after acid leaching, the porosity increases obviously and the pore size distributes more widely. Some large pores appear and the mean pore diameter increases by 2 to 3 times. There is little pore connectivity before acid leaching, while the pore connectivity in-creases significantly after acid leaching, being inhomogeneous in three different directions. The fractal dimension of pores also increa-ses after acid leaching, and the porosity and the mean pore diameter grows exponentially with the fractal dimension. 3-D image analy-sis is a powerful technique to quantitatively characterize the micro-scale pore structure of ore particles during acid leaching, so it facili-tates to disclosure the evolution laws of pore structure.关键词
铜矿处理/颗粒/浸出/孔隙结构/CT技术/图像处理Key words
copper ore treatment/particles/leaching/pore structure/computed tomography/image processing分类
矿业与冶金引用本文复制引用
杨保华,吴爱祥,缪秀秀..基于图像处理的矿石颗粒三维微观孔隙结构演化[J].工程科学学报,2016,38(3):328-334,7.基金项目
国家自然科学基金资助项目(51304076) （51304076）
长江学者和创新团队发展计划资助项目( IRT0950) （ IRT0950）
湖南省自然科学基金资助项目(14JJ4064) （14JJ4064）
