Abstract The use of X-ray micro computed tomography (X-ray micro-CT) for three-dimensional (3D) characterization of multiphase systems continues to increase in metallurgical research. In recent years, a number of technical developments in X-ray sources and X-ray imaging arrays have broadened the utility of micro-CT. Here, the authors review the current state-of-the-art tomographic techniques for both qualitative and quantitative geometallurgical characterization. This review first considers the basic principles of tomography and commonly used tomographic systems. The advantages and disadvantages (shortcomings) of micro-CT are discussed. Software development, including current image reconstruction algorithms, such as traditional weighted back projection and iterative reconstruction algorithms, as well as image segmentation tasks, are then discussed for processing 3D images and conducting quantitative analysis. Based on the development of hardware and software, applications involved in geometallurgy and minerals engineering are then thoroughly discussed. Specifically, applications include the determination of microstructure such as particle size, shape, and damage, as well as porosity and pore network structure of packed particle beds. In this way, the permeability, mineral composition, coal washability, mineral liberation, and exposed grain surface area can be determined.

中文翻译：

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微 CT 在地质冶金多相矿物系统 3D 分析中的发展和应用

摘要 X 射线显微计算机断层扫描 (X 射线显微 CT) 在多相系统的三维 (3D) 表征中的使用在冶金研究中不断增加。近年来，X 射线源和 X 射线成像阵列的多项技术发展拓宽了微 CT 的实用性。在这里，作者回顾了当前用于定性和定量地质冶金特征的最先进的层析成像技术。本综述首先考虑了断层扫描的基本原理和常用的断层扫描系统。讨论了微 CT 的优缺点（缺点）。软件开发，包括当前的图像重建算法，如传统的加权反投影和迭代重建算法，以及图像分割任务，然后讨论处理 3D 图像和进行定量分析。在硬件和软件开发的基础上，深入探讨了在地质冶金和矿产工程中的应用。具体而言，应用包括确定微观结构，例如颗粒大小、形状和损伤，以及填充颗粒床的孔隙率和孔隙网络结构。通过这种方式，可以确定渗透性、矿物成分、洗煤性、矿物释放和暴露的颗粒表面积。填充颗粒床的形状和损伤，以及孔隙率和孔隙网络结构。通过这种方式，可以确定渗透性、矿物成分、洗煤性、矿物释放和暴露的颗粒表面积。填充颗粒床的形状和损伤，以及孔隙率和孔隙网络结构。通过这种方式，可以确定渗透性、矿物成分、洗煤性、矿物释放和暴露的颗粒表面积。