1. What is the role of coke in the blast furnace?
2. What is the role of limestone in the blast furnace?
3. Which ore of iron is commonly used in the blast
furnace?
4. Why is it called a blast furnace?
5.
What do we call the layer of impurities that forms at the base of the blast furnace above the
liquid iron?
It reacts with oxygen
to produce a lot of heat and the CO2 which in turn produces CO, the reducing agent.
Limestone helps to removes
sand (impurities) in the ore.
Because hot air is ‘blasted
into the furnace’