煤泥柱式分选试验研究与工业应用
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摘要
分析了试验煤泥的粒度组成和可浮性,开展了煤泥浮选优化试验研究以及不同矿浆质量浓度下的小浮选机与小浮选柱试验研究,探索了不同入料量时直径5 m工业浮选柱的分选效果,得出该浮选柱的最佳处理入料参数。FCMC-5000浮选柱的工业应用表明:当入料量为550 m~3/h时,精煤灰分为7.42%,精煤产率为61.53%,浮选完善指标为63.27%,浮选效率为90.10%;分选指标良好,经济效益明显。
The size constitution and the floatability of the tested coal slime was analyzed, and the optimization flotation test of coal slime as well as the flotation test separately with small flotation machine and small flotation column at various mass fraction of coal slime were researched. In addition, the effects of separation with the industrial flotation column whose diameter was 5 m at various feedings flow were explored, and the optimal parameters of the flotation column for processing the feedings were obtained. The industrial application of FCMC-5000 flotation column showed the ash content of clean coal was 7.42%, the yield of clean coal was 61.53%, the flotation perfection index was 63.27% and the flotation efficiency was 90.10% while the feedings flow was 550 m~3/h. The separation indexes and the economic benefits were excellent.
The size constitution and the floatability of the tested coal slime was analyzed, and the optimization flotation test of coal slime as well as the flotation test separately with small flotation machine and small flotation column at various mass fraction of coal slime were researched. In addition, the effects of separation with the industrial flotation column whose diameter was 5 m at various feedings flow were explored, and the optimal parameters of the flotation column for processing the feedings were obtained. The industrial application of FCMC-5000 flotation column showed the ash content of clean coal was 7.42%, the yield of clean coal was 61.53%, the flotation perfection index was 63.27% and the flotation efficiency was 90.10% while the feedings flow was 550 m~3/h. The separation indexes and the economic benefits were excellent.
引文
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[2]史培宁,王家岭.选煤厂全粒级分选工艺[J].煤炭工程,2018,50(6):95-97.
[3]陈朱应,王利军,郑恺昕,等.浮选柱旋流段入料方式对流场的影响[J].煤炭工程,2018,50(4):152-156.
[4]何维军.FXZ系列静态浮选柱通过四川省煤炭工业局主持的评审[J].煤炭科学技术,1999,27(1):55.
[5]常青.大型浮选柱通过省级鉴定[J].选煤技术,1998(1):47.
[6]孙凤杰,陶秀祥.炼焦中煤柱浮选试验研究[J].选煤技术,2017(6):1-4.
[7]邓小伟,刘炯天,王永田,等.基于底部旋流的浮选柱内气泡尺寸分布规律[J].中国矿业大学学报,2018,47(5):1092-1097.
[8]张迟强.充气旋流浮选柱充气性能对煤泥粒度影响研究[D].徐州:中国矿业大学,2017:5.
[9]倪超.柱浮选精煤细泥污染形成机理及抑制研究[D].徐州:中国矿业大学,2016:12.
[10]史帅星,韩登峰,张跃军,等.浮选柱内紊流强度对气泡与颗粒碰撞概率的影响[J].有色金属(选矿部分),2016(4):81-86.
[11]高秀,马子龙,刘长青.矿物在旋流-静态微泡浮选柱旋流段的分布规律[J].矿产综合利用,2016(1):92-96.
[12]徐宏祥,王永田,刘炯天,等.基于PIV浮选柱旋流场的测试与模拟[J].煤炭学报,2014,39(增刊1):212-218.
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