Transcription of CHAPTER 3 CENTRIFUGATION 3.1 INTRODUCTION
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CHAPTER 3 CENTRIFUGATION 3.1 INTRODUCTION
CHAPTER 3 CENTRIFUGATION INTRODUCTION General Background: Centrifugal dewatering is widely used method for separating solid-liquid or liquid-liquid in several industries due to the higher gravitational forces affecting on the particles. In this method, if the applied centrifugal force created by the angular velocity of a rotating basket is larger than capillary force, liquid in the capillary tubes is spontaneously removed from the filter cake [1-10]. For this reason, the centrifugal filters are performed in high speed for the fine particles to obtain lower moisture content product [1,2,9]. When an aqueous suspension of particles is introduced to a centrifuge whose wall is made of a porous medium, the heavier and larger particles settle quickly on the medium while the lighter water (or any liquids) forms a layer over the cake.
made of a porous medium, the heavier and larger particles settle quickly on the medium while the lighter water (or any liquids) forms a layer over the cake. As centrifugation continues, water begins to flow through the cake. The initial dewatering process, in which water flows through
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