The dewatering treatment of alluvial placer tin ore after beneficiation is an indispensable part of the beneficiation process. The following are the detailed principles and advantages of vibrating dewatering screens, filter presses and dryers:
Principle:The vibrating dewatering screen places the slurry on the screen through vibration, and under the action of vibration force, the water is discharged through the screen, while the solid particles are retained on the screen to achieve solid-liquid separation.
Advantages:
The dewatering efficiency is high, the treatment capacity is large, and it is suitable for the dewatering treatment of a large number of slurries. The operation is simple, the equipment maintenance cost is low, and it is easy to realize automatic control. 
Principle:The filter press uses mechanical pressure to squeeze out the water in the slurry, and through the filtration of the filter cloth, the solid particles are retained on the filter cloth to achieve solid-liquid separation.
Advantages:
It is suitable for slag or slurry with high water content, and the dewatering effect is stable. It is easy to operate and suitable for solid-liquid separation in the process. 
Principle:The dryer heats the slag or slurry through hot air to evaporate the water on its surface, so as to achieve the purpose of dehydration.
Advantages:
It has good dehydration effect and is suitable for dewatering slag with high water content. Different types of dryers can be selected according to the characteristics of the ore and production needs, such as rotary dryers, drum dryers, etc. 
These dewatering equipment play an important role in the dewatering treatment of alluvial placer tin ore after beneficiation, which can effectively separate solid particles and moisture, and achieve solid-liquid separation, thereby improving resource utilization efficiency, reducing production costs, and ensuring environmental safety.