低阶煤浮选降灰及提高水煤浆浓度技术研究
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摘要
为了处理大量堆积的低阶煤煤泥,对榆林低阶煤煤泥进行直接浮选,再用其浮选精煤去改善榆林水煤浆级配,来提高当地水煤浆浓度。通过使用80%KD-4和20%助剂N作为捕收剂,仲辛醇为起泡剂,成功选出灰分在9.45%、产率为49.4%的合格低灰精煤。成功把榆林当地水煤浆浓度由原来的60.5%提升到65.31%,实现了资源最大化利用。
In order to deal with the large number of stacked low rank coal slime,direct flotation was applied on Yulin low rank coal slime,and the clean coal was used to improve water slurry gradation and concentration. 80% KD-4 and 20%assistant N were used as collector and octanol as frother. Qualified low ash clean coal with ash content of 9. 45% and yield of 49. 4% was successfully selected and added in local coal water slurry, and the CWS concentration increased from60. 5% to 65. 31%,maximizing the resource utilization.
In order to deal with the large number of stacked low rank coal slime,direct flotation was applied on Yulin low rank coal slime,and the clean coal was used to improve water slurry gradation and concentration. 80% KD-4 and 20%assistant N were used as collector and octanol as frother. Qualified low ash clean coal with ash content of 9. 45% and yield of 49. 4% was successfully selected and added in local coal water slurry, and the CWS concentration increased from60. 5% to 65. 31%,maximizing the resource utilization.
引文
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[3]邵俊杰.褐煤提质技术现状及我国褐煤提质技术发展趋势探讨[J].神华科技,2009,7(2):17-22.
[4]李登新,孟繁玲,林永富.褐煤有粘结剂冷压成型研究[J].煤化工,1998,7(6):4-25.
[5]OZBAYOGLU·G,DEPCIT,ATAMANN.Effect of Microwave Radiation on Coal Flotation[J].Energy Sources,2009(31):49-59.
[6]李少章,朱书全.低阶煤泥浮选的研究[J].煤炭工程,2004,36(12):60-62.
[7]杨阳.低阶煤浮选的试验研究[J].煤炭工程,2013,45(3):105-107.
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[10]郑描.浮游选煤降灰工艺和作用机理的研究[D].淮南:安徽理工大学系,2006.
[11]徐志强,孙美洁,刘建强.水煤浆应用现状及技术进展[J].煤炭工程,2014,46(10):65-67.
[12]段清兵.中国水煤浆技术应用现状与发展前景[J].煤炭科学技术,2015,43(1):129-133.
[13]何国锋,詹隆,王燕芳.水煤浆技术发展与应用[M].北京:化学工业出版社,2012.