METHOD AND APPARATUS FOR GRINDING IRON ORE OR IRON ORE CONCENTRATE

摘要

The invention relates to a method and apparatus for grinding iron ore or iro n ore concentrate, the material being ground in circulation in a material bed roll mill, one fraction of the iron ore or iron ore concentrate ground in the material bed roll mill being recirculated to the material bed roll mill and the other fraction of the iron ore or iron ore concentrate being classified into oversize material and fines, the oversize material being returned to the material bed roll mill.