define smelting and roasting...
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Roasting is a process of heating of sulphide ore to a high temperature in presence of air
Smelting uses heat and a chemical reducing agent to decompose the ore, driving off other elements as gases
Smelting uses heat and a chemical reducing agent to decompose the ore, driving off other elements as gases
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Roasting -Heating the ore below it's melting point in the presence of air or oxygen to get metal oxide.
Smelting -Reduction of the metal oxide with carbon.
Smelting -Reduction of the metal oxide with carbon.
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