초록 ▼

Methods of improving the efficiency of solid-liquid separation during centrifugal filtration have been developed. They consist of increasing the pressure drop across the filter cake using extraneous means such as increasing the gas pressure inside a filter chamber and/or applying vacuum on the outsi

Methods of improving the efficiency of solid-liquid separation during centrifugal filtration have been developed. They consist of increasing the pressure drop across the filter cake using extraneous means such as increasing the gas pressure inside a filter chamber and/or applying vacuum on the outside. The extraneous means of increasing the pressure drop is designed to increase the rate of removing liquid (water) during the drainage period of the centrifugal filtration process and, hence, lower the amount of the residual liquid (water) left in the filter cake.

대표청구항 ▼

1. A method of performing solid-liquid separation during centrifugal filtration comprising:feeding a slurry into a filtration chamber, the slurry comprising at least a particulate component and a liquid component; rotating the filtration chamber to apply a centrifugal force to at least a portion of

1. A method of performing solid-liquid separation during centrifugal filtration comprising:feeding a slurry into a filtration chamber, the slurry comprising at least a particulate component and a liquid component; rotating the filtration chamber to apply a centrifugal force to at least a portion of the slurry, whereby the particulate component forms a cake on a porous member; allowing the liquid to migrate through an interior surface of the cake, until the liquid is substantially removed from the interior surface of the cake; and providing a compressed gas to the filtration chamber, whereby a positive pressure gradient is produced across a thickness of the cake for removing the liquid from an interior of the cake.