When soda cans are recycled, what do they use to strip the paint?

Question

Is it an abrasive? Is it a chemical? Which chemical?

Answer 1

They don't remove the paint.  They simply melt the cans in a furnace.  Any paint or residue in the cans is burned off and the aluminum is then processed into usuable form so it can be reused.

Answer 2

more than likely it is evaporated when it hits the smelter