霍尔辛赫选煤厂浮选设备改造方案研究与应用

    Study and application of flotation equipment renovation scheme in Huoerxinhe coal preparation plant

    • 摘要: 为了解决浮选尾煤灰分偏低且不稳定及浮选药剂消耗较高的问题,在研究落实国家能源有关政策与环保要求基础上,霍尔辛赫选煤厂通过分析国内外煤泥浮选技术现状,基于机械搅拌式浮选机工作原理,对比研究了机械搅拌式浮选机与微泡浮选柱对入料性质变化的适应性,结合该厂煤质特征和生产实际,研究提出采用2台XJM-S36机械搅拌式浮选机更替原有3台FCSMC5 500 mm × 7 000 mm微泡浮选柱的技改方案,并对比分析了更换浮选设备前后的生产效果。结果表明:XJM-S36机械搅拌式浮选机对选煤厂煤泥性质变化的适应性更强,更换后浮选尾煤灰分由改造之前的40%~52%稳定在72%~73%,尾煤灰分显著提高、稳定性显著增强;浮选药剂消耗量由改造前的1.52 kg/t降低到1.26 kg/t,药剂消耗量显著下降。

       

      Abstract: In order to tackles the problems of low and inconsistent ash content in flotation tailings and high consumption of flotation reagents, based on the study and implementation of relevant national energy policies and environmental protection requirements, Huoerxinhe coal preparation plant analyzes the current status of domestic and international coal slime flotation technology and working principle of mechanical agitation flotation machine, at the same time, by comparing and analyzing the adaptability of mechanical agitation flotation machines and microbubble flotation columns to changes in feed properties, and combining with the coal quality characteristics and production reality of the plant, a technical renovation plan is proposed to replace the original three FCSMC5 500 mm × 7000 mm microbubble flotation columns with two XJM-S36 mechanical agitation flotation machines, the production effects before and after the replacement of the equipment are also compared and analyzed. The results show that the XJM-S36 mechanical agitation flotation machine has stronger adaptability to the changes in the properties of coal slime in the coal preparation plant, after replacement, the ash content of flotation tailings is stabilized at 72% ~ 73% from the previous 40% ~ 52%, with a significant increase in tailings ash content and a significant enhancement in stability; the consumption of flotation agents is decreased from 1.52 kg/t before the transformation to 1.26 kg/t, and with a significant reduction in reagent consumption.

       

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