首页|Physicochemical factors affecting the wettability of copper mine blasting dust
Physicochemical factors affecting the wettability of copper mine blasting dust
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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.
Longzhe Jin、Jianguo Liu、Jingzhong Guo、Jiaying Wang、Tianyang Wang
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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,China
College of Safety Engineering,North China Institute of Science and Technology,Sanhe 101601,China
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authors are grateful to the National Nature Science Foundation of ChinaNational Key Research and Development Program of China
NETL
NSTL
万方数据
维普
