禾草沟二矿选煤厂浮选替代工艺改造实践

Reformation practice of flotation alternative process at Hecaogou No.2 Coal Preparation Plant

针对禾草沟二矿选煤厂宽粒级精煤泥水中高灰细泥与低灰精煤泥粒度分布差异显著的特点,采用分级、分选组合旋流器对其进行分级浓缩及粗煤泥精选一体化,分选后粗精煤泥经电磁振动高频筛脱水脱泥,分级后细粒煤泥水进尾煤浓缩机。改造后精煤泥、尾煤泥灰分指标优于原“水力旋流器+弧形筛+二段浮选”工艺,每年增加经济效益435万元。