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针对目前浮选设备入料浓度低、处理量小、难以适应较高浓度煤泥浮选等一系列问题。设计了一种新型的浮选设备—充气旋流微泡浮选柱。通过不同浓度下对浮选机、旋流微泡浮选柱和充气旋流微泡浮选柱的试验结果表明:在充气量0.5 m3/h时,随入料浓度增加0.25~0.5 mm粗粒煤泥占入料量也增加,100、120、140 g/L 3种入料质量浓度水平下粗粒煤泥占入料量分别为12.72%、15.29%、17.24%,入料浓度140 g/L时,充气旋流微泡浮选柱精煤产率81.27%,精煤灰分11.67%,对各个浮选设备的精煤产品进行筛分发现充气旋流微泡浮选柱与普通旋流微泡浮选柱相比对0.25~0.5 mm粗煤泥的回收率增加了3.13%,在保证精煤灰分低于11.5%的条件下,入料浓度的增加有利于充气旋流微泡浮选柱对粗粒煤泥的浮选。
Flotation equipment for the current low concentration of the feed, the handling capacity is small, it is difficult to adapt to a higher concentration of flotation slime and a series of other issues. A new type of flotation device was designed. The test results of flotation machine, swirling microbubble flotation column and aerated swirling microbubble flotation column at different concentrations show that when the aeration rate is 0.5 m3 / h, the content of 0.25 ~ 0.5 mm coarse particles The amount of coal slurry also increased. The coarse coal slurries accounted for 12.72%, 15.29% and 17.24% of the total feed concentration at 100, 120 and 140 g / L, respectively. The feed concentration was 140 g / L, the cyclone microbubble flotation column yield of refined coal 81.27%, 11.67% of the fine coal ash, flotation equipment for each of the coal products were screened found that the cyclone micro-bubble flotation column and common cyclonic micro Flotation column compared to 0.25 ~ 0.5 mm coarse slime recovery increased 3.13%, to ensure that the ash content of less than 11.5% of the conditions, the feed concentration is conducive to the cyclone micro-bubble flotation column Flotation of coarse slime.