A REVIEW upon THE EXTRACTION OF METALS FROM THE ORES.
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Source of metal: Metals occur in earth’s crust and in sea water; in the form of ores. Earth’s crust is the major source of metal. Sea water contains many salts; such as sodium chloride, magnesium chloride, etc.
Mineral: Minerals are naturally occurring substances which have uniform composition.
Ores: The minerals from which a metal can be profitably extracted are called ores.
Metals found at the bottom of reactivity series are least reactive and they are often found in nature in free-state; such as gold, silver, copper, etc. Copper and silver are also found in the form of sulphide and oxide ores.
Metals found in the middle of reactivity series, such as Zn, Fe, Pb, etc. are usually found in the form of oxides, sulphides or carbonates.
Metals found at the top of the reactivity series are never found in free-state as they are very reactive, e.g. K, Na, Ca, Mg and Al, etc.
Many metals are found in the form of oxides because oxygen is abundant in nature and is very reactive.
Extraction of Metals
Metals can be categorized into three parts on the basis of their reactivity: most reactive, medium reactive and least reactive.
Steps of Extraction of Metals
flow chart metal extraction
Mineral: Minerals are naturally occurring substances which have uniform composition.
Ores: The minerals from which a metal can be profitably extracted are called ores.
Metals found at the bottom of reactivity series are least reactive and they are often found in nature in free-state; such as gold, silver, copper, etc. Copper and silver are also found in the form of sulphide and oxide ores.
Metals found in the middle of reactivity series, such as Zn, Fe, Pb, etc. are usually found in the form of oxides, sulphides or carbonates.
Metals found at the top of the reactivity series are never found in free-state as they are very reactive, e.g. K, Na, Ca, Mg and Al, etc.
Many metals are found in the form of oxides because oxygen is abundant in nature and is very reactive.
Extraction of Metals
Metals can be categorized into three parts on the basis of their reactivity: most reactive, medium reactive and least reactive.
Steps of Extraction of Metals
flow chart metal extraction
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