why do you need to crush iron ore bering rock
Iron Ore Magnetic Separation - 911 MetallurgistApr 20, 2017 . The problem is to utilize millions of tons, and we may safely say billions of tons, of now worthless iron-bearing rock and to produce from it 10,000,000 to .. An ore which must be crushed to 1/8 in., 1/16 in., or lower will require the wet method of separation, while for larger sizes the dry method can be most.why do you need to crush iron ore bering rock,Iron - Department of EnergyOther iron ores are less rich and have a large number of impurities. The most important iron ore- forming minerals are: • Magnetite - Magnetite (Fe3O4) forms magnetic . Specifically, magnetite and hematite are the main iron-bearing ores in the Lake .. concentrating taconite, the rock first must be crushed to a fine powder.Iron ore - WikipediaDSO deposits are typically rarer than the magnetite-bearing BIF or other rocks which form its main source or protolith rock, but are considerably cheaper to mine and process as they require less beneficiation due to the higher iron content. However, DSO ores can contain significantly higher concentrations of penalty.