Brief Summary of Physical Separation Technologies for Ferromanganese Oxide Ores

Ferromanganese oxide ores feature close symbiosis of iron and manganese minerals with fine dissemination sizes. Traditional physical separation technologies include:

· Gravity separation: Based on density differences, suitable for coarse-grained ores using jigs and shaking tables, but less effective for fine-grained ores1.

· Magnetic separation: Relying on magnetic property differences, high-gradient strong magnetic separation can separate Fe-Mn minerals, adapting better to fine-grained ores than gravity separation but affected by mineral magnetism and structure2.

· Flotation: Depending on surface property differences, requiring specific reagents for adjustment. It shows advantages for fine-grained ores but suffers from high reagent consumption and slime interference3.

· Combined processes: Such as gravity-magnetic or magnetic-flotation combinations, enhancing separation efficiency through synergies but with complex flowsheets4.
Traditional physical separation generally serves as a pretreatment step and needs integration with chemical separation for efficient utilization