Iron extraction

How is the high temperature used to extract iron produced?

Blast furnace

What is used to produce Carbon dioxide and heat up the blast furnace?

Coke (Carbon) - 2C + O₂ —> CO₂

Why is more coke added into the blast furnace?

To reduce the Carbon Dioxide into Carbon Monoxide

What happens after Carbon Monoxide is made?

The iron ore is reduced - 2Fe₂O₃ + 3C —> 4Fe + 3CO₂

Why is limestone added to the blast furnace?

To remove impurities and produces slag

What does hot air provide in the extraction?

Oxygen for combustion

Is iron more or less dense than slag?

More dense - therefore slag comes out on top