Method for preparing precipitated silica comprising a step of high temperature spalling

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 (S1), followed by a step of separation to obtain a cake, a step of spalling said cake to obtain a suspension of precipitated silica (S2) and a step of drying said suspension, method wherein the spalling step is carried out at a temperature of between 50 and 120°C.