Iron is considered a common element on Earth. Iron is extensively in construction industry. It is also considered to be one of the oldest metals that was used long time ago. The process of applying heat to the ore in order to extract base metal is known as smelting. It is a major form of extractive metallurgy. Smelting uses heat and reducing agents such as coal to eliminate other elements from the metal. Steel and iron are closely related. Iron is produced by melting of iron ore in a blast ... Read more