Working principle of continuous decanter centrifuge and suitable suspension

- May 03, 2019-

The continuous decanter centrifuge is a machine for separating solid and liquid phases. It consists of a wall that can withstand high-speed rotation, a conical outer drum, an inner drum with a spiral scraper, and a differential that causes the inner and outer drums to produce differential speed. The differential is composed of two types, horizontal and vertical.

 

The working principle of the continuous decanter centrifuge is that the feed slurry enters the center of the inner drum chamber through the fixed feed tube and then enters the outer drum. Under the action of centrifugal force, the solid particles are deposited on the inner wall of the outer drum, and the deposited pellets are continuously pushed to the discharge end of the small end of the drum through a spiral scraper attached to the outer surface of the inner drum, and then enter the solid phase product collection. Device. The clarified liquid is continuously discharged into the liquid discharge pipe through the adjustable filtrate port at the large end of the outer drum cone, and the entire drum assembly is measured for dynamic balance.

 

When the continuous decanter centrifuge is used to separate the liquid-liquid-solid mixture, the operation is the same. The two liquids with different densities are separated into two layers of light and heavy liquid in the drum, and are respectively discharged through the light-end and heavy liquid overflow ports of the big end, which are suitable for treating particle size of 0.002-6 mm and solid phase concentration of 1-5. %, a solid solution density difference greater than 0.05 kg / decimeter 3 of the suspension. This centrifuge can also be used for classification of solid particles of different densities and sizes, such as classification in beneficiation.

 

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