is it because the coke is more reactive than the iron ore and limestone that is also used in the limestone.?
No, it depends of what kind of magnet it is.
Maybe, but i got an earth magnet the size of a quarter that can lift like 5 pounds or something.
in iron smelting, carbon is important to make iron into steel. The carbon bonds and hardens the final product by reducing mirco-crystalline fractures in the iron. So steel is about .5-2% carbon. usually 10-15% nickel or chromium depending on whether it's stainless steel and the rest is iron.
Coke (carbon) is a reducing agent, and combines with the oxygen in the iron ore, producing carbon dioxide and releasing the iron. The limestone (calcium carbonate) is used as a flux to combine with the silicate impurities to form calcium silicate slag; which floats to the surface.
Yes this is a terrible site
