c6.1.7 extracting iron Flashcards
1
Q
what are the raw materials using in extracting iron
A
- hot air
- iron
- coke
- limestone
2
Q
stage 1 of extracting iron
A
C(s) + 02(g) - CO2(g)
3
Q
stage 2 of extracting iron
A
C(s) + CO2(g) - 2CO (g)
4
Q
stage 3 of extracting iron
A
3CO(g) + Fe2O3(s) - 3CO2(g) + 2Fe(l)
5
Q
stage 1 in removing sandy pieces from the molten iron
A
CaCo3(s) - CaO(s) + CO2(g)
6
Q
stage 2 in removing sandy pieces from the molten iron
A
CaO(s) + SiO(g) - CaSiO(l)
7
Q
what is another name for the calcium silicate
A
slag
8
Q
chemical symbol for silica
A
SiO2
9
Q
stage 1/2 are examples of what reactions?
A
Combustion
