Pig iron
Slag is transferred to slag pits for further processing into usable materials, for example raw material for cement production, road construction, etc. ... road construction, etc. Pig iron casting machine (courtesy Paul Wurth) Blast furnace reactions. The principal reactions are: 2C + O 2 → 2CO C + H 2 O → CO + H 2. CO 2 + C → 2CO 3Fe 2 O ...