The invention discloses a multi-stage separation synergistic power
coal washing process, and belongs to the technical field of
coal washing
processing. The TDS intelligent dry
separation system, the dry-wet combined desliming process, the super
coal slime classification
cyclone, the super coal slime dense medium
cyclone and the ultrahigh-pressure elastic squeezing
filter press are in multi-stage cooperative linkage to be used for power coal washing, the
moisture content and the ash content are reduced to the maximum extent in the separation stage, and the heat productivity of the power coal is increased. Compared with a process before improvement, the power coal washing process with cooperation of multi-stage separation has the advantages that the
gangue sorting efficiency and the power coal productivity are improved, the super coal slime dense medium
cyclone, the super classification cyclone and the ultrahigh-pressure elastic squeezing
filter press are orderly used in the power coal washing process, the
water content of a
filter cake is greatly reduced, and the
water content of the
filter cake is greatly reduced. The
water content of the
filter cake is obviously superior to that of a common quick-opening
membrane filter press and is lower than that of the filter cake of dried coal slime, so that the fluctuation range of the heat value of the power coal is lower, the heat value of
gangue is reduced, and the heat value of the power coal is improved.