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Pathological Analysis of Lung Metastasis Following Lateral Tail-Vein Injection of Tumor Cells

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Particle shape analysis of tailings using digital image processing.

Yonghao Yang^1,2, Zuoan Wei^3,4, Andy Fourie⁵

¹State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400030, China. yyh369@cqu.edu.cn.

Environmental Science and Pollution Research International

|July 26, 2019

Summary

Particle shape significantly impacts dielectric material properties. Tailings exhibit higher angularity than natural sands, with shape descriptors like elongation and sphericity varying with particle size.

Keywords:

Image processing Mining engineering Particle shape Shape descriptors Tailings

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Area of Science:

Materials Science
Geotechnical Engineering
Mineral Processing

Background:

Physical and mechanical properties of dielectric materials are intrinsically linked to particle shape in granular media.
Understanding microscopic differences between industrial tailings and natural sands is crucial for material characterization.

Purpose of the Study:

To quantitatively compare the particle shape descriptors of four types of tailings (gold, tin, copper, iron) with two natural sands (river, sea).
To elucidate the relationship between particle size and shape characteristics in these granular materials.

Main Methods:

Digital image processing techniques were employed to quantify particle shape descriptors.
Key descriptors analyzed include elongation, sphericity, convexity, and roughness.
Comparative analysis was conducted between different tailings and natural sand samples.

Main Results:

Particle shape descriptors demonstrate a strong correlation with particle size.
Decreasing particle size increases elongation in tailings and sea sand (needle-like/columnar shapes) and sphericity in tailings and river sand (spherical shapes).
Convexity and roughness increase with particle size in tailings and sea sand; tailings exhibit significantly higher angularity compared to natural sands.

Conclusions:

Significant microscopic differences exist in particle shape and surface texture between tailings and natural sands.
Tailings possess higher angularity, a key differentiator from sea and river sands.
Particle size is a critical factor influencing the manifestation of various shape descriptors.