Rake Thickener Systems - Wet Processing-Washing

The Rake Thickener System is what equipment is commonly used in industries for thickening slurries or suspensions through separating them from solids by means of apparatus. Usually, it will have a tank or a basin where slurry shall be introduced, with a mechanism that provides movement similar to the rake arm or blade, which rotates slowly in the tank. The rake arm travels through the slurry, picking up settled solids from the bottom of the tank and moving them very slowly towards the center for removal. Continuous rotation of this rake arm facilitates the effective concentration of solid particles in slurry, finally separating a thickened underflow from a clarified liquid overflow. The rake thickener system is basically based on sedimentation, where the slurry's gravity makes solid particles settle at the bottom while the liquid rises to the top.