Grinding iron ore concentrate by using HPGR and ball mills and .
WEBThe effects of grinding mechanisms on generating pellet feed were assessed and pellets and DRIs were produced. Drop number, green and dry compression strengths of green pellets produced by HPGR samples were improved. For fired pellets, CCS was more than 2793 N/P, FeO content was lower than 1%, and porosity of HPGR samples decreased .