Concentrating processes, which are based on the physical properties of the mineral, include magnetic separation, gravity separation, and flotation.
Bastnasite, monazite, and xenotime are their chief mercantile sources, which are generally beneficiated by flotation, gravity or magnetic separation processes to get concentrates that are processed using pyro/hydrometallurgical routes.
Concentration of ore is accomplished by crushing and grinding, magnetic separation to remove magnetite, and then desliming and flotation separation.
Numerous methods such as chemical precipitation, ion exchange, coagulation-flocculation, flotation, membrane filtration, electrochemical treatment, magnetic separation and purification, biosorption, and nanotechnology are being used to treat or remove heavy metals from water and wastewater [ 1, 5, 6].
Separation flotation utilizes pneumatic and mechanical agitation to produce air bubbles that carry the mineral particles to the surface.
Magnetic separation is based on the differing degrees of attraction exerted on various minerals by magnetic fields.
This work illustrates the reduction roasting and magnetic separation studies of a complex Indian iron ore with 57% Fe that could not be upgraded to > 61% Fe using a flow sheet comprising of the conventional unit operations like scrubbing, jigging, magnetic separation or flotation.
Amplification was improved after the magnetic separation of magnetic particles.
High gradient magnetic separation (HGMS) achieves the effective separation to fine weakly magnetic minerals through a magnetic matrix.
This is a major advantage over conventional magnetic separation techniques.
