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具有不同颗粒大小的尾部材料的重建和微观结构特征

Zhenkai Pan^1,2, Mingnan Xu², Tingting Liu¹

¹School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China.

Materials (Basel, Switzerland)

|August 28, 2025

概括

这项研究使用微型CT分析铜尾矿,揭示粒子大小对微观结构和异构性的影响. 这些发现有助于可持续地管理废弃物储存设施.

科学领域:

地质工程
环境工程
材料科学

背景情况:

由于采矿活动的增加,有效的尾矿管理至关重要.
了解尾矿的微观结构对于地质技术和环境安全至关重要.
铜尾矿在储存和处置方面存在独特的挑战.

研究的目的:

系统地研究不同颗粒大小的铜尾矿的微观结构特征.
分析3D重建行为并量化粒子形态,孔隙结构和异构的差异.
提供有关改善废弃物管理的粒子规模机制的见解.

主要方法:

用于高分辨率成像的X射线计算机断层扫描 (微型CT).
数字图像处理和3D建模用于微结构分析.
对两个颗粒大小组的分析 (细:0.075-0.15毫米;粗:0.15-0.3毫米).

主要成果:

与细颗粒相比,粗颗粒的形状更为不规则和角.
细颗粒具有更复杂的孔径网络和更高的碎片尺寸.
由于聚合,CT显微孔径低于实验室测量;异构性随应力方向而变化.

结论:

颗粒大小显著影响铜尾矿的微观结构,孔隙结构和异构性.
微型CT和3D建模为粒子尺度行为提供了宝贵的见解.
这些发现支持对残留物储存设施进行加强的结构评估和可持续管理.

关键词:

三维重建计算机扫描技术微观结构颗粒大小分布废弃物材料

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