Essay on Environmental Impacts Production of Iron and...

Iron is this starting point for steelmaking which has performed as a backbone to the advancement of modern technology and is vital to the upbringing of the future. It acts as the predominant reason for the industrial revolution. The foundation that is iron, more industrially known as Cast Iron has been given the second honour as it is the one of the cheapest materials for engineering, when taken to molten temperatures it gains the ability to be cast into intricate shapes. Cast Iron has been sub-divided into 5 different classes when the composition is changed or tampered with. Each of these classes have different properties but in comparison with Steel which also has its grades ranging from low to high grade carbon steel which are just†¦show more content†¦Figure Iron Making The iron is manufactured in two different ways, these processes are employed to utilise the various raw materials and technologies, primarily is done by the use of a blast furnace; a tall metal steel vessel lined with brick or concrete for insulation (Gallaher and Depro, 2002). The blast furnace is continuously feed with the ores of iron as well as fluxing agents such as flux stone and fuelled with coal or coke and other sources of iron oxides to generate hot metal liquid iron. A brief description of the overall reaction what goes on in a blast furnace is given below: Firstly, the coke is ignited in a sufficient amount of oxygen to form carbon dioxide. The reaction is very exothermic and temperatures are over 1000 °C to effect the iron ore reduction. This acts as a fuel. †¢ C(s) + O2(g) == CO2(g) Coke has a second function and is used as a reducing agent, at high temperatures it combines carbon to form carbon monoxide, which is used as a reducing agent. †¢ CO2(g) + C(s) == 2CO(g) The carbon monoxide then reduces the haematite, to iron and carbon dioxide. †¢ 2Fe2O3(s) + 3C(g) == 4Fe(l/s) + 3CO2(g) The iron formed is usually in its liquid state due to intense heat that the blast furnace has. Limestone is used to clean the acidic mineral impurities out of the blast furnace, such as silica. The reaction thatShow MoreRelatedA Connection Between Consumer s Behavior And The Environmental Changes1502 Words   |  7 PagesQuote A and Quote B show a connection between consumer’s behavior and the environmental changes. Thus, the unsustainable patterns of natural resources production and consumption are having social and environmental impacts in America. 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