Recycling of waste plastic combustion soot and diesel oil mixing to prepare a new collector to improve the performance of low-rank coal flotation

被引：0

作者：

Hu, Xianglin ^{[1
,2
]}

Li, Yubiao ^{[1
,2
]}

Li, Wanqing ^{[1
,2
]}

机构：

[1] School of Resources and Environmental Engineering, Wuhan University of Technology, Hubei, Wuhan,430070, China

[2] Key Laboratory of Green Utilization of Critical Non-metallic Mineral Resources, Ministry of Education, Wuhan University of Technology, Hubei, Wuhan,430070, China

来源：

Powder Technology | 2024年 / 439卷

关键词：

Coal - Coal combustion - Contact angle - Diesel engines - Dust - Flotation - Fourier transform infrared spectroscopy - Hydrogen bonds - Hydrophobicity - Oxygen - Scanning electron microscopy - Spectrometers - Waste incineration;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Clean utilization of soot pollution and low-rank coal has received extensive attention worldwide. In this study, soot from plastic combustion was mixed with diesel oil as a new collector (SPC-DO) to enhance the low-rank coal flotation. The flotation results showed that SPC-DO improved the flotation of low-rank coal more effectively than diesel oil, with a higher yield of fine coal and lower ash content. In addition, the results of the scanning electron microscope, contact angle, X-ray photoelectron spectrometer, and Fourier transform infrared spectroscopy measurements showed that the soot from plastic combustion has superhydrophobicity, and the oxygen-containing functional groups on its surface can interact with the hydroxyl groups on the low-rank coal surface to form hydrogen bonds, which in turn cover the hydrophilic sites. When applying SPC-DO as the collector, the soot from plastic combustion not only increased the hydrophobic sites on the LRC surface but also enhanced the adsorption effect of diesel oil on the low-rank coal surface. © 2024

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