Can shell is made from steel-plated tin electrolytic (abbreviated as SPTE), which is a cold-rolled low carbon steel sheet plated with pure tin on both sides for anti-corrosion, thus the material integrates both features of steel and tin, high strength and formability, of and the good appearance, corrosion resistance and solderability. 

Recycle of SPTE first comes to tin recycling, the key point of all the recycling steps. The accessible process for tin recycling from SPTE includes : 

Alkaline Electro-winning

Alkaline Solution Treatment

Chloridization Treatment