Depending on just how much, I've spread it on cardboard and run it through a slow dryer.
Heck, I remember someone going one better using the process and making door mats out of the stuff.
Of course, the other thing to do, when possible is to use the stuff. All mixed up usually gives a dark gray that when when based down makes great tone-on-tone prints (but because of the base doesn't use a lot up.
With some black pigment added, it could provide a lifetime supply of black ink.