Enriching lower grade concentrate via:

  1. Carbon-in-pulp (CIP) is the sequential leach then absorption of gold from ore. During the CIP stage, pulp flows through several agitated tanks where sodium cyanide and oxygen have been added to dissolve gold into solution. In the absorption stage, this solution flows through several agitated tanks containing activated carbon. Gold absorbs onto the activated carbon, which flows countercurrent to the pulp, while screens separate the barren pulp from the gold-loaded carbon.
  2. Carbon-in leach (CIL) is a simultaneous leach and absorption process. The simultaneous leach and absorption phases of the CIL process were developed for processing gold ores that contain preg-robbing materials such as natural absorptive carbon. These reduce the gold yield by attracting gold meant for activated carbon. Simultaneous leaching and absorption help minimize the problem.


The purification of precious metals through chemical, electrochemical, and pyrometallurgical processes is known as refining. Zion Precious Metals selects the best method for your metal based on its initial purity.

We recover precious metals from a wide range of metal-bearing materials, such as jewelry and bullions from secondary market, d’ore from mining companies, industrial scraps and solutions.

Our individual approach to each customer starts from dedicated crucible which is solely used for your material. Our experienced staff implements most efficient refining process for each material, which results in fast turnaround and competitive pricing.



In order to determine the purity and composition of your lot, it will be melted and sampled. Our highly qualified laboratory staff masters range of the methods, including fire, spectrometric, ICP, X-Ray and chemical assays.



For thousands of years, gold has been used as a medium of exchange and a store of value, and trading gold is just as relevant in the twenty-first century as it has ever been. Gold continues to be a valuable store of value, with many investors using it to protect themselves against financial crises, inflation, and geopolitical risks.

Hedging enables dealers to lock in prices and mitigates risk associated with price fluctuations. Zion Precious Metals provides international customers with hedging services.

The London Metal Exchange (LME) is the global center for industrial metals trading; Zion Precious Metals trading is based on LME pricing and trading according to LME live prices.

Zion Precious Metals trading activities include the acquisition of scrap jewelry, mining products, and e-waste material from appropriately accredited license holders.