Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

CHEMISTRY iGCSE > BLAST FURNACE > Flashcards

BLAST FURNACE Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Chemistry flashcards Periodic Table flashcards Chemistry 101 flashcards Organic Chemistry 101 flashcards
0
Q

What are the raw materials used in the blast furnace?

A

Hematite (iron ore)
Coke (carbon)
Limestone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

What is the purpose of the blast furnace?

A

Extraction of iron

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the word formula of hematite?

A

Iron (III) oxide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the purpose of the coke?

A

Reducing iron oxide to iron metal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the purpose of the limestone?

A

Take away impurities in the form of slag

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the temperature in the blast furnace?

A

1500 degrees

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the first reaction to take place in the blast furnace in the reduction of iron involving coke?

A

C + O2 –> CO2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the second reaction to take place in the blast furnace in the reduction of iron involving the CO2 from the first reaction?

A

CO2 + C –> 2CO

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the second reaction to take place in the blast furnace involving the CO2 from the first reaction?

A

CO2 + C –> 2CO

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the third reaction to take place in the blast furnace in the reduction of iron involving carbon monoxide from the second reaction?

A

3CO + Fe2O3 –> 2Fe + 3CO2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the useful component of hematite?

A

Iron (III) oxide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What type of reaction is the first reaction in the blast furnace?
(C + O2 –> CO2)

A

Combustion reaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What type of reaction is the third reaction in the blast furnace?
(3CO + Fe2O3 –> 2Fe + 3CO2)

A

Redox reaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the main impurity in hematite?

A

Silicon dioxide (sand)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the chemical formula of silicon dioxide?

A

SiO2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the chemical formula of limestone?

A

CaCO3

16
Q

What is the first reaction in the blast furnace involved in the removal of impurities?

A

CaCO3 –> CaO + CO2

17
Q

What is the second reaction in the blast furnace involved in the removal of impurities, involving the CaO from first reaction?

A

CaO + SiO2 –> CaSiO3

18
Q

What type of reaction is the second reaction in the removal of impurities from the blast furnace?

A

Neutralisation reaction

19
Q

What is the term we use for CaSiO3?

A

Molten slag

20
Q

How do we get rid of the molten slag from the blast furnace?

A

We tap it off

21
Q

Why can we tap off the molten slag?

A

Because it is less dense than the molten iron so will form the top layer.

22
Q

Why do we need to remove the silicon dioxide from the iron?

A

Iron with silicon dioxide in it is brittle.

CHEMISTRY iGCSE (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions