abstract |
The present invention relates to a kind of separating medium, it comprises Rotary drying or spray-dired precipitated silica.This silica has aperture surface area P, wherein logn 10 p & gt; 2.2, and the ratio of BET and CTAB measured before this silica carries out any surface modification is at least 1.0.The invention further relates to a kind of from fluid stream separate out suspended or the method for material of dissolving, it comprises and is contacted with above-mentioned separating medium by this stream. |