In the manufacturing industry today, iron and steel are the most common materials used for large varieties of applications. Today, you’ll get to know the common raw materials used for the production of iron and steel.
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Raw Materials used in Making iron
The basic raw materials for making iron and steel are:
Iron ore
Iron ore is one of the basic among other raw materials used in the production of iron. It is described as any mineral substance that contains enough iron which makes its smelting a viable proposition, i.e. an iron content of less than 20%. Ores vary considerably in form and composition from one source to another. Some ores are naturally found as very hard rock, some as granular masses, and some as loose earthy materials with color variations from black to brick red.
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Iron is found as a chemical compound (usually an oxide) within the ore. These ores are generally smelted containing iron oxide materials like magnetite, hematite, and limonite. Magnetite ores are the richest known with around 65% of iron. It is a ferrosoferric oxide (Fe3o4); That is, black, dense, and strongly magnetic.
Coke
Coke plays three important roles in the black furnace during the production of iron. It serves as fuel to provide heat for smelting, as a rich source of carbon monoxide gas into iron, and as non-clogging support for the burden (the charge) in the blast furnace. Its porosity aids the free passage of the gasser through the furnace. It is made by roasting specially selected coking coal in large sealed ovens.
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Volatile substances produce whilst the gases released are cleaned and used as fuel in other parts of the plant. Coke as one of the raw materials used in iron making is a substance made by heating coal until it becomes almost pure carbon.
Limestone
Limestone serves as a fluxing agent with the extraneous materials (‘gangue’) associated with the ore. It combines with these materials (clay etc.) and makes them more readily fusible, forming a liquid slag that separates from the iron.
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Sinter
Sinter is made of laser-grade, finely divided iron ore that is roasted with coke and lime and enables it to remove a large number of impurities in the ore.
Some other metals such as chromium, nickel, manganese, molybdenum, tungsten, etc. Are sometimes mixed with iron for the production of various steel.
Read more: Everything you need to know about sheet metals
Watch the video below to learn how the making of iron and steel:
That is all for this article, where raw materials used in making iron and steel are discussed. I hope you get a lot from this post, if so, kindly share it with other students. Thanks for reading, see you next time!
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