The Blast Furnace
Reduction of Iron Ore — Core & Supplement | Cambridge IGCSE 0620
It's 2000°C inside this towering inferno. Iron ore sits at the top. Molten iron must pour out the bottom. Your mission: trigger the three reactions in sequence. One wrong move and the iron stays locked in its ore — useless.
Carbon Monoxide is colourless, odourless, and highly toxic. It binds to haemoglobin 200× stronger than oxygen. The furnace must be fully sealed and CO emissions captured.
Trigger the steps in order. Each step unlocks the next.
Click tokens from the bank into the slots. Click a slot to remove it.
Coke (carbon) burns in the hot air blast. This is exothermic — it generates the enormous heat needed.
CO₂ rises and reacts with MORE coke. This makes Carbon Monoxide — the actual reducing agent!
CO steals oxygen from iron ore. Iron is reduced. CO is oxidised to CO₂. Molten iron trickles to the bottom.
Q: What is the main reducing agent in the blast furnace?
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