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Science PT3 Chapter 4 Reactivity of Metals

4.3 Extraction of Metals from their Ores

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Extraction of Metals
1. The extraction of metals is a process to obtain a metal from its ore. The extraction
of the metal depends on its position in the reactivity series of metals.

Table 4.4 Metal extraction method
Metal Method of extraction / decomposition
Potassium
Sodium Extraction through electrolysis For metals higher than
carbon in the reactivity
Calcium series of metals, metals
Magnesium are extracted through
electrolysis.
Aluminium
Carbon
Zinc For metals lower than
Iron Extraction through heating of metal ore carbon in the reactivity
series of metals, metals
with carbon in blast furnace
Tin are extracted through
reduction of metal
Lead oxides with carbon.
Copper Burning of metal ore in air
Mercury
Silver Exist in element form
Gold

Process of Iron Extraction
1. The extraction process of iron metal from its ore is carried out in the blast
furnace.

Excess gas Iron ore + carbon
+ limestone

Hot air Hot air
Molten iron Slag Form 3

Diagram 4.7 Extraction of iron in the blast furnace
Form 3

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