During the extraction of iron in the blast furnace; slag is produced using? by Sunday | Apr 17 | Chemistry NECO | 0 comments A. carbon B. crylite C. limestone D. oxygen E. sulphur Correct Answer: Option C – limestone Users Also Read These:The process of extraction of iron from its ore is?In the extraction of iron, the waste gas from the…In the extraction of iron; hot air is introduced…The gas produced during tissue respiration can be…The main function of limestone in the blast furnace is to?