Blast furnace

Question 1

what is the name of copper ore

Answer 1

Malachite

Question 2

What is the name of aluminium ore

Answer 2

Bauxite

Question 3

What is the name of Iron ore

Answer 3

Heamatite

Question 4

What is an ore?

Answer 4

A compound found in rocks that contains metals

Question 5

How can Iron be extracted?

Answer 5

Through reduction with carbon

Question 6

what is the waste product that comes from the blast furnace?

Answer 6

Slag

Question 7

What is the name of molten ironed produced in blast furnace?

Answer 7

Pig Iron

Question 8

What step is Calcium cabonate –> calcium oxide + carbon dioxide (what is symbols)

Answer 8

Step 1: CaCO3 –> CaO +CO2

Question 9

What 3 substances are added in the blast furnace?

Answer 9

1. Limestone (CaCO3)
2. Iron ore, heamatite (Fe2O3)
   3.Carbon (Coke) (C)

Question 10

What is the first reaction to happen?

Answer 10

Carbon(coke) reacts with oxygen to form carbon dioxide (complete combustion). It is then used to form carbon monoxide. (C + O2 –> CO2) (It’s exothermic and also helps warm up furnace to correct temp)

Question 11

What happens with the produced carbon dioxide? (step 2)

Answer 11

Carbon dioxide + carbon –> Carbon monoxide (this will reduce the oxygen) CO2 + C –> 2CO

Question 12

What does the carbon monoxide do? (Step 3)

Answer 12

It reduces Iron(III)oxide to iron. Iron(III) oxide + Carbon monoxide –> Iron + carbon dioxide (Fe2O3 + 3CO –> 2Fe + 3CO2)

Question 13

What happens with impurity: Calcium carbonate? (limestone) step 4

Answer 13

Calcium carbonate –> calcium oxide + Carbon dioxide (used to form slag)
It thermally decomposes. CaCO3 –> CaO + CO2

Question 14

How is slag formed?

Answer 14

Calcium oxide (from the limestone) + Silicon dioxide (sand) –> Slag
CaO + SiO2 –> CaSiO3