Fractal and microscopic quantitative characterization of unclassified tailings flocs

查看全文 作　　者：Di [1,2]Zheng;Wei-dong [1,2]Song;Yu-ye [1,2]Tan;Shuai [1,2]Cao;Zi-long [1,2]Yang;Li-juan [1,2,3]Sun

机构地区：[1]State Key Laboratory of High-Efficient Mining and Safety of Metal Mines of Ministry of Education,University of Science and Technology Beijing,Beijing 100083,China;[2]School of Civil and Resources Engineering,University of Science and Technology Beijing,Beijing 100083,China;[3]State Key Laboratory for Nonlinear Mechanics(LNM) Institute of Mechanics,Chinese Academy of Science,Beijing 100190,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》索引2021年第28卷第9期,共11页

基　　金：This work was financially supported by the National Natural Science Foundation of China(Nos.51974012 and 51804017);the National Key Research and Development Program of China(No.2018YFC0604602);the Fundamental Research Funds for the Central Universities,China(No.FRF-BD-19-005A);the Opening Fund of State Key Laboratory of Nonlinear Mechanics(No.LNM202009). 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. 关键词：tailings flocs fractal dimension settlement height grayscale value three-dimensional pore model

相关文献

参考文献（41）
引证文献（11）
耦合文献（573）

参考文献(41)

引证文献(11)

耦合文献(573)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Fractal and microscopic quantitative characterization of unclassified tailings flocs

参考文献(41)

引证文献(11)

耦合文献(573)

用户提示