Blast Furnace Flashcards
What goes into the top of the furnace?
Limestone
Coke
Iron ore
What is slag?
Layer of calcium silicate formed on top of the molten iron
How is slag formed?
Calcium oxide reacts with sand
What can slag be used for?
To make roads and concrete
What kind of reaction is the one that takes place between carbon monoxide and iron oxide?
Redox
What is a redox reaction?
One that involves oxidation and reduction
Equation of waste gases
C02 + C= 2CO
Fe2O3+3CO=
2Fe + 3CO2
Name for iron oxide
Haematite
What must be removed from iron oxide to make iron?
Oxygen DURRRRRRRR
In a blast furnace what reduces what?
Carbon monoxide reduces iron oxide
iron oxide+ carbon monoxide =
Iron + carbon dioxide
Carbon reacts with oxygen to form…
CO2
The CO2 reacts with more carbon to form…
C+CO2= 2CO
How to remove impurities in haematite
Add limestone- limestone breaks down to form carbon dioxide and calcium oxide. Calcium oxide reacts with sand to form slag (calcium silicate)
