Depending on the ore used and the reaction conditions temperature, air supply, additives , the resulting reaction product is a mixture of different proportions of slag, partially reduced iron ore Fe 3 O 4 and metallic iron. Online Service Portal Do you have any questions or suggestions regarding our devices, products, experiments, equipment sets or about our software?
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Extraction of iron by the blast furnace process VC5. Extraction of iron by the blast furnace process. Add to product list. Thank you for your inquiry. We will get back to you as soon as possible. Description Iron does not exist on the Earth as an element, but rather in the form of its oxides and sulphides in iron ore.
You must ensure there are no oxygen leaks from the tubing connecting the cylinder to the stainless steel tube and that care is taken to separate the oxygen from any source of ignition. Instead of a stainless steel tube, a glass tube can be used. Care must be taken when judging the oxygen flow rate. I judge the correct flow rate by blowing the oxygen on my cheek until I can feel a gentle breeze.
When teaching the extraction of metals I start with native metals such as gold, and then move up the reactivity series. Silver oxide can be heated easily to produce silver. Copper is more problematic but lengthy roasting of a mixture of copper oxide and charcoal will do the job, or more simply thermal decomposition of the oxide directly.
Iron, being more reactive requires, more effort, which this demonstration shows well. I also link the thermal decomposition of iron oxide to some simple entropy calculations with my Y13 students. By making some assumptions, they can predict the temperature of thermal decomposition of iron oxide:. Shriver, P. Atkins and C. Langford, Inorganic chemistry , p Oxford: OUP, Harrison, Revised Nuffield advanced science book of data.
Harlow: Longman, Connect your curriculum teaching on water and the water cycle to engaging sustainability contexts. This topic web suggests classroom activities on pollution in the water cycle, how water is cleaned and how we can use less of it.
Demonstrate the movement of positive and negative ions with a simpler, safer version of this classic demo. Add this quick demo to the end of a lesson on squeaky pops to show the dramatic impact of mixing chemicals in the correct proportions. Step 3 — iron III oxide is reduced. In this reaction, the iron III oxide is reduced to iron, and the carbon is oxidised to carbon dioxide. In the blast furnace, it is so hot that carbon monoxide can be used, in place of carbon, to reduce the iron III oxide:.
The calcium carbonate in the limestone thermally decomposes to form calcium oxide. The calcium oxide then reacts with silica sand impurities in the haematite, to produce slag — which is calcium silicate. This is separated from the iron and used to make road surfaces.
This reaction is a neutralisation reaction. Calcium oxide is basic as it is a metal oxide and silica is acidic as it is a non-metal oxide. There are a number of important factors to consider when choosing the site of a blast furnace.
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