| 摘要 |
<p>The invention concerns a method for preparing precipitated silica comprising reaction of a silicate with an acidifying agent whereby is obtained a precipitated silica suspension, then separating and drying said suspension. The invention is characterised in that said method comprises the following process: adding to the reaction medium at least a compound A of aluminium; then adding to the reaction medium an acidifying agent, said separation comprising filtration and disintegration of the cake derived from said filtration, said disintegration being preferably carried out in the presence of at least a compound B of aluminium. The thus prepared silica precipitates are particularly well adapted for use as reinforcing elastomer filler.</p> |
