This aluminum is as far away from Coke can aluminum as meatloaf is from filet mignon. While all aluminum comes from industrial smelters the bulk of the metal that comes out of the foundry gets processed for general consumption; everything imaginable from kitchenware to car wheels to, yes, Coke cans. However, a comparatively tiny amount of that aluminum is diverted to be further refined.

One use of high purity aluminum is for making specialty uses like telescope mirrors, which benefit from the trio of desired characteristics of high reflectivity, low weight and resistance to corrosion. In a somewhat odd arrangement, you can find high-purity aluminum being used in electronic chips right alongside industrial grade counterparts being used as structural parts and heat sinks.

CAS 7429-90-5