How to separate manganese from iron ore by beneficiation. Upgradation of Low-Grade Siliceous Manganese Ore from Bonai beneficiation techniques like gravity, magnetic separation etc. were employed horizons, out of which the ores of Iron ore group occupies a larger area and.Apr 03, 2019 2 Manganese ore beneficiation methods. The purpose of manganese ore beneficiation is to remove the slime, separate stone and mineral manganese, enrich the low-grade ore, improve the ore grade, reduce the energy and reagent consumption of the smelting process from the source, and then reduce the amount of smelting waste.