Smelter

Noun

1. A person employed to do smelting.

   "He works as a smelter."

2. A machine used to smelt metal.

   "Throw the scrap in the smelter so we can melt it down and reuse it."

3. A place where smelting is done.

   "We'll take the scrap to the smelter and get some money for it."