Every weekend I have a bonfire and my friends always bring tons of beer with them. I set out a trash can so I can collect the cans and bottles because in Iowa you get a 5 cent refund for each can and bottle. To make a long story short I end up with alot of melted aluminium cans from my drunk friends who throw them in the fire. I will get melted lumps after I clean up the day after. What would you guys classify this stuff as? Obviously this is aluminium, I have just been throwing it aside in a 5 gallon bucket. Thanks.