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Fractal and microscopic quantitative characterization of unclassified tailings flocs

文献类型：期刊论文

作者Zheng, Di2,3; Song, Wei-dong2,3; Tan, Yu-ye2,3; Cao, Shuai2,3; Yang, Zi-long2,3; Sun LJ(孙立娟)1,2,3
刊名INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
出版日期2021-09-01
卷号28期号:9页码:1429-1439
关键词tailings flocs fractal dimension settlement height grayscale value three-dimensional pore model
ISSN号1674-4799
DOI10.1007/s12613-020-2181-2
通讯作者Tan, Yu-ye(tanyuye@ustb.edu.cn)
英文摘要A series of laboratory investigations are conducted to analyze the effect of flocculant type on the spatial morphology and microstructural characteristics of flocs during the flocculation and settling of tailings. Four flocculant types (i.e., ZYZ, JYC-2, ZYD, and JYC-1) are considered in this study. The fractal characteristics and internal structures of tailings flocs with different flocculant types and settlement heights are analyzed by conducting scanning electron microscopy and X-ray micro-computed tomography scanning experiments based on the fractal theory. Results show that unclassified tailings flocs are irregular clusters with fractal characteristics, and the flocculation effect of the four flocculant types has the following trend: ZYZ > JYC-2 > ZYD > JYC-1. The size and average grayscale value of tailings flocs decrease with the increase in settlement height. The average grayscale values at the top and bottom are 144 and 103, respectively. The settlement height remarkably affects the pore distribution pattern, as reflected in the constructed three-dimensional pore model of tailings flocs. The top part of flocs has relatively good penetration, whereas the bottom part of flocs has mostly dispersed pores. The number of pores increases exponentially with the increase in settlement height. By contrast, the size of pores initially increases and subsequently decreases with the increase in settlement height.
分类号二类
WOS关键词2-STEP FLOCCULATION PROCESS ; ORE ; BACKFILL
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000698381800003
其他责任者Tan, Yu-ye
源URL[http://dspace.imech.ac.cn/handle/311007/87465]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China
2.Univ Sci & Technol Beijing, Sch Civil & Resources Engn, Beijing 100083, Peoples R China;
3.Univ Sci & Technol Beijing, Minist Educ, State Key Lab High Efficient Min & Safety Met Min, Beijing 100083, Peoples R China;
推荐引用方式
GB/T 7714		 Zheng, Di,Song, Wei-dong,Tan, Yu-ye,et al. Fractal and microscopic quantitative characterization of unclassified tailings flocs[J]. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,2021,28(9):1429-1439.
APA Zheng, Di,Song, Wei-dong,Tan, Yu-ye,Cao, Shuai,Yang, Zi-long,&孙立娟.(2021).Fractal and microscopic quantitative characterization of unclassified tailings flocs.INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,28(9),1429-1439.
MLA Zheng, Di,et al."Fractal and microscopic quantitative characterization of unclassified tailings flocs".INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS 28.9(2021):1429-1439.

入库方式： OAI收割

来源：力学研究所

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