MINERAL PROCESSING

GRAVITY CONCENTRATION

Gravity separation dates back to 3000 BC when Egyptians used the technique for the separation of gold. It is necessary to determine the suitability of a gravity concentration process before it is employed for concentration of an ore. 

Centrifugal Concentration

 Shaker Table Concentration VIDEO Shows Gold Line

Spiral Concentration

Jigs

MINERAL PROCESSING TECHNIQUES

FROTH FLOTATION

• Standard Agitated Cell Flotation

• Tall Column Flotation

FROTH FLOTATION

ALTERNATIVE LEACHING TECHNIQUES

• Autoclave

• Mineral & Organic Acid Leach

• Halogen Compounds-Environmentally benign halogen leaching

• Ultra Sonic Enhanced Leaching

METAL RECOVERY FROM SOLUTION

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• Ion Exchange

• Carbon

• Precipitation

• Electrowinning

PARTICLE SIZE ANALYZER (PSA)

Particle size analysis, particle size measurement, or simply particle sizing is the collective name of the technical procedures, or laboratory techniques which determines the size range, and/or the average, or mean size of the particles in a powder or liquid sample.

MAGNETIC & ELECTROSTATIC  SEPARATION

Minerals have varying degrees of susceptibility to magnetic fields, which provides the ability to separate minerals on this basis. Highly magnetic minerals such as magnetite and some garnets can be separated from paramagnetic minerals such as rutile and zircon.

Minerals can be conductive or non-conductive, which allows separation such as gold from quartz.

Froth Flotation was initially developed to separate sulfide minerals

such as chalcopyrite from gangue. Collectors and frothers are added to a slurry to attach selected minerals to air bubbles to float them to the surface to be collected as a concentrate. Many sulfide and oxide

minerals can be floated.