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Where does waste gas nitrogen come from during the extraction of iron?
During the extraction of iron from haematite in a blast furnace, nitrogen gas is produced as a waste gas. Does it come from the hot air that is blown into the furnace? And does the hot air used consist of only oxygen gas?
2 Answers
- kumorifoxLv 79 years agoFavorite Answer
Nitrogen is not really produced in the reaction. The air used is enriched with oxygen, but it still contains a lot of nitrogen, since almost 80% of normal air is nitrogen. The nitrogen gas simply enters the furnace and escapes unchanged.
