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Flashcards in IRON TO STEEL Deck (12)
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1

What is the name of iron obtained from the blast furnace?

Cast iron or pig iron

2

What is the feature if pig or cast iron?

It is brittle

3

What are the impurities it contains?

Carbon, Sulfur, Silicon and Phosphorus

4

How many percent of Carbon does it contain?

4%

5

Where does the molten iron gets poured into after obtaining it from the blast furnace?

To the oxygen furnace

6

Calcium oxide is added and a jet of oxygen is turned on. Is calcium Oxide acidic or basic?

Basic

7

What are the first two reacts that occur?

C (s) + O (g) ----> CO2 (g)
S (s) + O2 (g) ----> SO2 (g)

8

What happens to those gases?

They escape

9

What are the second two reactions that take place?

Si (s) + O2 (g) ----> SiO2 (s)
2P (s) + 2.5 O2 (g) ----> P2O5 (s)

10

Are those following compounds solids, liquids or gases?
SiO2 P2O5

Solids

11

Are those following compounds Acids or bases?
SiO2 P2O5

Acids (non - metal oxides)

12

What does Calcium oxide do? Include the chemical equation.

It neutralizes acidic impurities forming slag which is skimmed off.
CaO + SiO2 ----> CaSiO3