Enhanced low-rank coal slime dewatering by adjustment of channel wall structure and surface wettability

Slow filtration rate and high moisture content of filter cake have become increasingly pronounced with decreasing particle size especially for low-rank coal slime, which hamper the clean and efficient use of resources. Herein, the effect of physical structure of filter cakes on filtration are studied in terms of filtration rate and moisture content of filter cakes. For coarse particles (125–147 μm), the filtration time can be reduced from 41 to...