Iron - Department of EnergySome ores are a mixture of minerals rich in iron. Other . Taconite contains low-grade iron in fine specks and bands. It is an . Specifically, magnetite and hematite are the main iron-bearing ores in the Lake. Superior district . Concentrates - Iron ore that requires beneficiation to upgrade the iron content is called low-grade.minerales processing low grade iron ore hematite,Upgrading of High-Aluminum Hematite-Limonite Ore by High . - MDPIMar 8, 2016 . size and close dissemination of iron minerals with gangue minerals. . high temperature reduction-magnetic separation process was studied to . from low-grade complex iron ores  and secondary resources containing.
minerales processing low grade iron ore hematite