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extra. of iron


This reaction uses the what? and why? The blast furnace because iron is less reactive than carbon
What raw materials are used? Iron ore (haematite), coke (carbon), limestone (calcium carbonate) & and air.
Firstly.. The iron ore, coke & limestone are all mixed together and fed into the top of the blast furnace.
Secondly... Hot air is blasted into the bottom of the furnace!!!!!!!!!
The first reaction is what? Oxygen from the air reacts with carbon to form carbon dioxide
(Oxygen reacts with what?) Oxygen from the air reacts with carbon to form carbon dioxide
What's the equation for this? (include state symbols) O2(g) + C(s) -> CO2(g)
Then, the carbon dioxide reacts with what and what is formed? The carbon dioxide reacts with the coke (carbon) forming carbon monoxide
What's the equation for this? (include state symbols) CO2(g) + C(s) -> 2CO(g)
What's the next reaction? The carbon monoxide reacts with the iron(iii) oxide in the iron ore
(what does the carbon monoxide do?) The carbon monoxide reacts with the iron(iii) oxide in the iron ore
What's the equation for this (ss)? Fe2O3(s) + 3CO(g) -> 2Fe(l) + 3CO2(g)
What happens to the iron formed? It melts and is collected at the bottom and is then tapped off.
Then what happens to the calcium carbonate in the limestone? It decomposes to form calcium oxide
What's the equation for this (ss)? CaCO3(s) -> CaO(s) + CO2(g)
What's the next reaction? The calcium oxide reacts with silicon dioxide, which is an impurity in the iron ore, to form calcium silicate.
what's the equation for this? (ss) CaO(s) + SiO2(s) -> CaSiO3(l)
What then happens to the calcium silicate? It melts and collects as molten slag on top of the molten iron, which is then tapped off separately.
Created by: eloiseis



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