塔里木大学学报2023，Vol.35Issue(4)：41-46,6.DOI:10.3969/j.issn.1009-0568.2023.04.006
超声波协同电化学强化煤浮选脱硫降灰的试验研究
Experimental study on enhancing desulfurization and ash reduction of coal flotation by ultrasound coupled with electrochemistry
摘要
Abstract
The synergistic effect of ultrasonic wave and electrochemistry on coal flotation desulfurization and ash reduction is signifi-cant.In this experiment,five different methods including direct flotation,ultrasonic,electrochemical,ultrasonic electrochemical and ultrasonic electrochemical flotation were used to treat Xinjiang Korla bitumescent coal(XK)with acid,and the sulfur content and ash content of coal samples before and after treatment were determined.The test results show that the order of influence of 5 different treat-ment methods on coal desulfurization is:ultrasonic electrochemical flotation>ultrasonic electrochemical>electrochemical>ultrasonic>direct flotation.Among them,ultrasonic electrochemical flotation has the best effect on coal desulfurization and ash reduction,the total sulfur reduction rate is 55.32%,sulfate sulfur reduction rate is 80.00%,organic sulfur reduction rate is 41.67%,pyrite sulfur reduc-tion rate is 69.09%,ash reduction rate is 51.07%.In addition,the analysis of fourier transform infrared spectrum(FTIR)and X-ray powder diffraction(XRD)shows that the ultrasonic and electrochemical enhanced flotation method can effectively remove pyrite sul-fur,alcohol sulfur,ether sulfur,quartz and kaolinite without changing the basic structure of coal samples.The application of ultrasonic electrochemistry in coal flotation desulfurization will promote the efficient conversion and clean utilization of coal.关键词
超声电化学/脱硫/降灰/强化浮选Key words
ultrasound electrochemistry/desulfurization/ash reduction/enhanced flotation分类
矿业与冶金引用本文复制引用
万声蒲,马小燕,张红喜..超声波协同电化学强化煤浮选脱硫降灰的试验研究[J].塔里木大学学报,2023,35(4):41-46,6.基金项目
国家自然科学基金地区基金项目"超声电化学浮选膜分离剥离煤中关键有害元素的机理"(21868035) （21868035）
塔里木大学研究生科研创新项目"酸性条件下超声电化学煤浮选脱硫"(TDGRI202108) （TDGRI202108）
矿物加工科学与技术国家重点实验室开放基金项目"煤中关键有害元素超声电化学浮选剥离的键合机理"(BGRIMM-KJSKL-2020-19) （BGRIMM-KJSKL-2020-19）
