Physicochemical factors affecting the wettability of copper mine blasting dust
Longzhe Jin1
Jianguo Liu1
Jingzhong Guo2
Jiaying Wang3
Tianyang Wang3
1.School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;Key Laboratory of High-Efficient Mining and Safety of Metal Mines of the Ministry of Education,University of Science and Technology Beijing,Beijing 100083,China;Mine Emergency Technology Research Center,University of Science and Technology Beijing,Beijing 100083,China2.School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;College of Safety Engineering,North China Institute of Science and Technology,Sanhe 101601,China3.School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China
摘要：To investigate the factors affecting the wettability of copper mine blasting dust,the primary blasting dust was collected from an open-pit copper mine and separated into hydrophilic blasting dust(HLBD)and hydrophobic blasting dust(HBBD)using water flotation method.The physicochemical properties of HLBD and HBBD were measured and compared with each other.The properties included particle size distributions(PSDs),micromorphologies,pore structures,mineral components and surface organic carbon functional groups.The results show that particle size and pore structure of the blasting dust are the main factors affecting its wettability.Specifically,particle size of HBBD is smaller than that of HLBD,and their respiratory dust(less than 10 μm)accounts for 61.74 vol％and 53.00 vol％,respectively.The pore structure of HBBD is more developed,and the total pore volume of HBBD is 1.66 times larger than that of HLBD.The identical mineral compositions were detected in HLBD and HBBD by X-rays diffraction(XRD);however,the surface organic hydrophobic component of HBBD is slightly larger than that of HLBD,this may be the reason for the poor wettability of HBBD.This study is significant to understand the effects of physicochemical properties of copper mine blasting dust on its wettability.
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论文发表日期：2021-06-30
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：9( 265-273 )
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