Extraction of Iron

bonkysleuth SG

Was reading through the extraction of iron and a question suddenly popped in my head. Why is the molten iron collected from blast furnace not pure? Remember doing this question before but can't recall the answer.

Thanks

dkcx SG

Thanks

There is still some C impurities from the extraction process if i didn't remember wrong

Darkness_hacker99 SG

It's not 100% iron. Contained roughly 5% impurities

The following stuff may not be found in your textbook.

Those pig iron extracted from the blast furnace will be further processed by injecting liquid oxygen into the molten iron. Purpose? To remove impurities by formation of acidic oxide e.g. SO2, and also promote removal of excess carbon to form CO2.

Removal of C, means you'll get a Low-carbon steel.

For more, read up at http://en.wikipedia.org/wiki/Basic_oxygen_steelmaking