Relative to typical hematite and magnetite ores, ironsands are disadvantaged by both lower grades of valuable elements and inferior reduction kinetics. To address these issues, this book proposes a two-fold pretreatment strategy: (1) physical enrichment via grinding and magnetic separation to enhance iron and titanium oxide content; and (2) chemical modification via pre-oxidation to improve reduction behavior. This chapter focuses on the grinding dissociation behavior, optimization of magnetic separation parameters, and the associated force mechanisms.