Metal(The Blast furnace)

Question 1

raw materials put into blast furnace

Answer 1

haematite
coke
limestone(caco3)

Question 2

the furnace is heated by

Answer 2

burning coke

Question 3

impurities are removed by heating them with

Answer 3

limestone(CaCO3) to form CaO + CO²

Question 4

reaction 1:

Answer 4

Carbon + oxygen –> carbon monoxide
Coke reacts with oxygen to heat up furnace

Question 5

reaction 2:

Answer 5

carbon monoxide + iron(III) oxide –> iron + carbon dioxide

3CO +Fe2O3 –> 2Fe+3CO2

Question 6

reaction 3:

Answer 6

calcium carbonate –> calcium oxide + carbon dioxide

-CaCO3 –> CaO + CO2

Question 7

reaction 4:

Answer 7

calcium oxide + silicon dioxide –> Calcium Silicate

-CaO + SiO2 –> CaSiO3 (SLAG / Calcium Silicate)