铁矿烧结矿三维结构与微观力学性能

IF 3.1 2区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING
Wei Wang , Ming Deng , Run-sheng Xu , Wei-bo Xu , Ze-lin Ouyang , Xiao-bo Huang , Zheng-liang Xue
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引用次数: 9

摘要

摘要提出了一种基于连续切片和三维重建的铁矿烧结矿矿物微观结构分析新方法。通过对两类铁矿烧结矿进行三维重建,分析了矿物在三维空间中的形态和分布,并根据其像素点计算了矿物在三维图像中的体积分数。此外,用维氏硬度计测定了矿物的显微硬度。值得注意的是,这两种烧结矿的矿物组成和分布不同。烧结矿1中的铁酸钙呈枝晶状,有许多相互连接的孔隙,这些颗粒呈纵横交错的状态;烧结矿2中的铁酸钙呈条状,与磁铁矿、硅酸盐和柱状孔隙交织在一起。基于二维区域计算的矿物含量在不同层间存在明显差异。定量分析表明,烧结矿1含有较多的铁酸钙和赤铁矿,而烧结矿2含有较多的磁铁矿和硅酸盐。矿物显微硬度由高到低依次为赤铁矿、铁酸钙、磁铁矿和硅酸盐。因此,烧结矿1比烧结矿2具有更大的转炉强度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Three-dimensional structure and micro-mechanical properties of iron ore sinter

Abstract

A new analysis method based on serial sectioning and three-dimensional (3D) reconstruction was developed to characterize the mineral microstructure of iron ore sinter. Through the 3D reconstruction of two types of iron ore sinters, the morphology and distribution of minerals in three-dimensional space were analyzed, and the volume fraction of minerals in a 3D image was calculated based on their pixel points. In addition, the microhardness of minerals was measured with a Vickers hardness tester. Notably, different mineral compositions and distributions are obtained in these two sinters. The calcium ferrite in Sinter 1 is dendritic with many interconnected pores, and these grains are crisscrossed and interwoven; the calcium ferrite in Sinter 2 is strip shaped and interweaves with magnetite, silicate and columnar pores. The calculated mineral contents based on a two-dimensional region are clearly different among various layers. Quantitative analysis shows that Sinter 1 contains a greater amount of calcium ferrite and hematite, whereas Sinter 2 contains more magnetite and silicate. The microhardness of minerals from highest to lowest is hematite, calcium ferrite, magnetite and silicate. Thus, Sinter 1 has a greater tumbler strength than Sinter 2.

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来源期刊
CiteScore
4.30
自引率
0.00%
发文量
2879
审稿时长
3.0 months
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