Do you want a hammer mill or roller mill?

Do you dump it on a pile or put it in a bin?

Do you want electric or pto drive?

How much electric power or pto hp do you have available?

There are lots of grinder/mixers out there than can easily do that much corn into hog feed in an hour time with 150 pto hp in front of it.   

And put it in a bin without any mess.