Research of iron ore grinding in a verticalrollermill ...
Mar 15, 2015· The first ore is from the Kiruna mine, which is the largest underground iron ore mine in the world. Kiruna ore has a magnetite content of around 90% . The Bond Work Index W i of the ore is kW h/t. The second ore is from Mertainen, a potential new mine, about 30 km away from Kiruna.