矿物表面解离度分析技术发展综述

A Review of Development of Mineral Surface Liberation Analysis Technology

矿物解离程度显著影响浮选分离效率,矿物在颗粒表面解离行为的精准解析是实现浮选过程高效调控的前提。总结了矿物加工领域常见的矿物表面解离度分析方法:基于扫描电子显微镜(SEM)的2D解离度分析、2D解离度的体视学修正和3D解离度分析方法(X射线显微断层扫描成像技术)。2D解离度分析方法应用于低解离度粗粒连生体时存在体视学偏差,并且复杂共伴生颗粒的2D矿物解离度体视学修正仍面临挑战。2D解离分析适用于矿物单体解离或者高度解离的传统浮选处理的细颗粒,而对于矿物解离度较低的粗颗粒,3D解离度分析不存在体视学偏差,可提供更准确的表面解离度分析结果。

The degree of mineral liberation has a significant effect on the separation efficiency of flotation,and accurate analysis of the mineral liberation behavior on the particle surface is a prerequisite for efficient control of the flotation process.We summarized the common methods of mineral surface liberation analysis in the field of mineral processing:2D liberation a-nalysis based on scanning electron microscopy(SEM),stereoscopic correction of 2D liberation and 3D liberation analysis methods(X-ray micro tomography).When the 2D liberation analysis method is applied to low liberation coarse composite par-ticle,there is a stereological bias,and the 2D mineral liberation stereological correction of complex associated particles still faces challenges.2D liberation analysis are suitable for individual or highly liberated particles by traditional flotation,while for coarse particles with low mineral liberation,3D liberation analysis can provide more accurate physical property analysis results without stereological bias.