Can it go in the dryer?

We don’t recommend it. Lay it flat to air dry. Great question!

Are these compression gloves? i'm looking for copper gloves that are not compression.

I have both the compression and the guardwell gloves the only difference I see the guardwell gloves cover the whole hand including the fingers the compression gloves leave the tips of the fingers uncovered.

If the pair I buy are too large can I return them or exchange them for the next size down?

I would assume so. I bought small for my hands and then purchased medium which felt better. Kept the small as I have a tendency to misplace one glove daily. Usually wear 24-7.

do the gloves protection from injuries - cuts, burns, abrasions, etc. ?

The gloves are thin but allow you to grab as if you were bare handed. They will not prevent cuts and if it is direct flame I don't think they will prevent burns. As for abrasions they will prevent some depending on what it is.