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  • Electrodes for arc furnaces are made from graphite.
  • This includes an arc furnace for smelting aluminum (Hall-Heroult)
  • Readily producible from charcoal, sand, and electricity via the Acheson process - [1]

Making Graphite

  • Graphite is made from Silicon carbide [2]. Silicon carbine is made by a carbothermic reduction of sand and charcoal with an electric arc.

Making a Graphite Clay Crucible