METHOD FOR PREPARING PRECIPITATED SILICA COMPRISING A HIGH COMPACTION STEP.

摘要

The present invention concerns a method for preparing precipitated silica comprising the reaction of a silicate with an acidifying agent to obtain a suspension of precipitated silica, followed by a step of separation to obtain a cake and a step of drying said cake, method wherein a step of compaction of said cake at a pressure greater than 10 bars is carried out between the step of separation and the step of drying.