Metallurgy is the process of extraction of metals from their ores. There are three stages in the extraction of metals from the ores.
They are 1) Concentration or dressing
2 Extraction of crude metal
3) Refining or purification of the metal.
Corrosion is an electro chemical reaction and prevention of corrosion is of prime importance. It not only saves money but also helps in preventing accidents. The important processes used in metallurgy are 1) Smelting, 2) Roasting, 3) alcinations.