You will definitely get more if you separate it all. And not just separating the types of metals but sub-types as well. For instance aluminum. You could have extrusion, cast, or sheet. One will pay more than the others but mixed prices are lower than any. Most yards won't sort it for you. Just do some research and If you have anymore questions than that's what we're here for. I keep finding more and more way to separate everything. Always needing more buckets.