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Chemistry — Blast Furnace (Iron Extraction)

Reducing iron ore to molten iron.

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digraph BlastFurnace {
  rankdir=TB;
  node [shape=box, style=rounded];
  "Iron ore (Fe2O3)" -> Furnace;
  "Coke (C)" -> Furnace;
  "Limestone (CaCO3)" -> Furnace;
  "Hot air" -> Furnace;
  Furnace -> "C + O2 -> CO2";
  "C + O2 -> CO2" -> "CO2 + C -> 2CO";
  "CO2 + C -> 2CO" -> "Fe2O3 + 3CO -> 2Fe + 3CO2";
  "Fe2O3 + 3CO -> 2Fe + 3CO2" -> "Molten iron";
  Furnace -> "CaCO3 -> CaO + CO2";
  "CaCO3 -> CaO + CO2" -> "Slag (CaSiO3)";
}