Apparatus and method for preparing aerogel blanket

A method for preparing an aerogel blanket, the method comprising:

• winding a blanket around a bobbin as a winding step (S10);
• rotatably installing the bobbin around which the blanket is wound inside a gelling tank, as an accommodation step (S20);
• injecting a precursor solution and a catalyst solution into a silica sol supply member to mix the precursor solution and the catalyst solution with each other, thereby preparing silica sol, as a silica sol preparation step (S30);
• rotating the bobbin, around which the blanket is wound, via a driving member, as a rotation step (S40);
• and
• injecting the silica sol mixed in the silica sol supply member into the gelling tank to impregnate the silica sol into the blanket rotating by the bobbin, thereby gelating the blanket, as a gelation step (S50).