| 摘要 |
A dryer for removing moisture from wet fine particles, such as coal, comprising an insulated stationary cylinder in which an open-ended metallic cylindrical tube is rotated, coaxially in an essentially horizontal position. Wet particles are introduced in said open end while hot air is circulated between the stationary cylinder and the tube. Metallic balls or the like contained in the rotating tube are interspersed in the wet mix. Perforated fins and baffles extend from the outer wall of the tube to aid in transferring heat, by conduction, to the tube and metallic balls to evaporate the moisture before the coal is discharged at the opposite end through a screen section of the tube. Additives may be introduced into the wet mix to coat the dried coal particles to prevent dust or prepare the mix for pelletizing or briquetting.
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