ITP Mining: Energy and Environmental Profile of the U.S. Mining .Magnetite - Magnetite (Fe3O4) forms magnetic black iron ore. There are large . To be competitive, iron mining must be done on a very large scale. Surface.haematite iron ore process,haematite iron ore process,IRON OREHematite is also known as "natural ore", a name which refers to the early years of mining, when certain hematite ores containing up to 66% iron could be fed.
haematite iron ore process