Chemistry, asked by Naotombakonsam1286, 11 months ago

What is the role of carbon monoxide in extraction of iron?

Answers

Answered by MrDefaulter
8
Iron is extracted from its ore, haematite, in a blast furnace. ... The limestone decomposes in the hot furnace, forming calcium oxide. This reacts with the sandy impurities (silicon dioxide) to form a slag. The slag can be used in making roads.

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Answered by Anonymous
6

Hot air is blasted into the furnace causing coke (carbon)

to burn rapidly producing carbon dioxide

and raising the temperature to 2000 °C.

carbon + oxygen arrow carbon dioxide + heat.

C(s) + O2(g) arrow CO2(g)

The carbon dioxide then

reacts with hot carbon to form carbon monoxide.

carbon dioxide + carbon arrow carbon monoxide.

CO2(g) + C(s) arrow 2CO(g)

Carbon monoxide then reduces iron in the ore to iron metal.

carbon monoxide + iron(III) oxide arrow carbon dioxide + iron.

3CO(g) + Fe2O3(s) arrow 3CO2(g) + 2Fe(l)

The temperature where the reduction takes place is above 1500 °C.

Iron falls to the bottom of the furnace

where the temperature is approximately 2000 °C.

Iron is liquid at this temperature and is tapped off periodically

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