The Effect of Particle Size Distribution of Hematite Concentrate onthe Properties of Green Pellets

This study evaluates the influence of particle size distribution and Blaine number on the drop number ofgreen pellets from hematite concentrate, ground using High-Pressure Grinding Rolls (HPGR). The goal was to pelletizethe concentrate with a Blaine number around ۱۶۷۰ cm²/g. The number of HPGR stages minimally impacted achievingoptimal P۸۰ and P۶۰ values. To enhance outcomes, particles larger than ۱۰۶ microns should be removed throughgrinding before processing. Ultimately, a concentrate with P۸۰ = ۶۳ μm and P۶۰ = ۳۱ μm yielded optimal green pelletproperties, resulting in a drop number of ~۵.۶ and fewer grinding stages.

کلیدواژه ها:

Hematite concentrate ، Pellet ، Grinding ، Particle size