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EXTRACTION >      
 


Proprietary Processes
The processes used by AuRIC, however familiar they may sound, are vastly enhanced by utilizing proprietary methods and substances that lead to the speedy and total refractory precious metal yields in AuRIC's circuitry.

The extraction method to be used is carefully selected for each concentrate. Following extensive laboratory testing, analysis and modeling, batches of concentrates are processed through various circuits available such as cyanidation, chlorination, pressure leaching and other proprietary technologies.

Pregnant solutions are then processed by electrowinning, solvent extraction or precipitation circuits and the metal proceeds are forwarded to the refining operations.

Click here to view the Production Flow Chart.

Hydro-Metallurgical
AuRIC uses proprietary oxidizers, accelerators, catalyzers and deppresants to enhance these processes.

Pyro-Metallurgical
The processes available include:

  • Concentrate smelting
  • Doré melting
  • High tempurature refining
 

 

 


Extractive Metallurgy
Extractive metallurgy is the practice of separating metals from their ore, then refining them into a pure metal. In order to convert a metal oxide or sulfide to a metal, the metal oxide must be reduced either chemically or electrolytically.

Hydrometallurgy
Hydrometallurgy involves the use of aqueous chemistry to purify metals or mineral concentrates. Typically hydrometallurgy consists of several specific processes including leaching, in-situ leaching, solvent extraction, ion exchange, electrometallugy and precipitation.

Pyrometallurgy
Pyrometallurgy uses high temperatures to transform metals and their ores. These transformations may produce pure metals, or intermediate minerals or alloys, suitable as feed for other refining or commercial applications.

Often pyrometallurgical processes are autogenous, and so the energy required to heat the minerals comes from the exothermic reaction of the minerals in the process and no further energy is required.

Smelting
In the smelting process minerals, usually metal sulfides, are heated beyond their fusion point, and are chemically manipulated to purify them while in the liquid phase.

Information used from Wikipedia.com for extractive metallurgy, hydrometallurgy, pyrometallurgy and smelting.

 
             
 
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