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湿法洗煤厂约占入洗原煤15～20％的煤泥需经浮选过滤回收。因浮选精煤矿浆粒度组成细,浓度低等原因造成过滤效果不好。目前单位过滤面积生产能力仅为0.25～0.4吨/时·米~2,而滤饼水分高达27～32％,过滤精煤的电耗在4.3～6.9度/吨以上,因而造成选煤厂电耗大,精煤水分高,选煤设备多等问题。所以如何提高浮选精煤的过滤效果减少电耗,已是国内外选煤工作者研究的重要课题。
Wet coal washing plant accounts for about 15 to 20% of the raw coal into the flotation of coal slime recovery. Due to flotation fine coal slurry particle size composition, low concentration caused by poor filtering effect. At present, the filtration capacity per unit area is only 0.25-0.4 t / h · m -2, while the filter cake moisture content is as high as 27-32%. The power consumption of filtered clean coal is 4.3- 6.9 degrees / ton, Consumption of large, high moisture coal, coal preparation equipment and other issues. Therefore, how to improve the filtration effect of flotation clean coal to reduce power consumption has become an important issue for coal preparation workers at home and abroad.