Building Materials
During smelting process, the combination of fuel in the furnace

Carbon dioxide with carbon forms carbon mono-oxide
Forms carbon dioxide
All listed here
Carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2

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Building Materials
Cast iron

May contain 2 to 5 per cent of carbon with other impurities
Is obtained by purifying pig iron
All listed here
Is manufactured in required shapes

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