Which of the following is needed to produce slag during the extraction of iron in the blast furnace? by Sunday | Aug 21 | Chemistry WAEC | 0 comments A. Cryolite B. Limestone C. Carbon D. Sulphur Correct Answer: Option B – Limestone Users Also Read These:The main function of limestone in the blast furnace is to?The process of seeding during the extraction of…The function of limestone in the extraction of iron…The raw materials used for the smelting of iron ore…Wrought iron is obtained by heating cast iron in a…