Influence of Specific Surface Area on the Strength of Iron Oxidized Pellets

Blaine specific surface area (SSA) is an essential physical property of iron concentrate and availably improved by a high-pressure grinding roller (HPGR) to enhance the pelletability qualities oxidized pellets. In this study, four concentrates with various SSA were obtained HPGR treatment produce The results show that high degree lattice deformation corresponds which beneficial for improving quality green, preheated, fired compressive strength increases from 600 1870 N·pellet−1 preheated pellets 2530 4270 when increased 849 cm2/g 1601 cm2/g, under optimal condition preheating at 1050 °C 12 min firing 1250 15 min. oxidation magnetite accelerated. Low porosity microphotographs integrated hematite joined crystallization support enhancement SSA.