GOLD EXTRACTION

Since the 20th century, gold has been principally extracted in a cyanide process by leaching the ore with cyanide solution. The gold may then be further refined by gold parting, which removes other metals (principally silver) by blowing chlorine gas through the molten metal.

GOLD INDUSTRIAL APPLICATION

Gold is not just a precious metal for jewelry and investment—it plays a critical role in various industries due to its unique properties:

Excellent conductivity (electrical & thermal)
Corrosion resistance
Biocompatibility
Reflectivity & ductility

GOLD FINANCIAL VALUE

Gold’s financial value stems from its dual role as a monetary asset and safe haven. With central banks accumulating gold, inflation concerns rising, and geopolitical tensions persisting, gold remains a critical component of modern portfolios. Investors should monitor Fed policy, real interest rates, and ETF flows for future price direction.

GOLD EXTRACTION PROCESS

CIL is a method of treating water by placing activated carbon adsorbents directly into the water. It is suitable for treating water bodies with high concentrations of organic matter and suspended particles. The gold CIL (Carbon In Leach) process is a commonly used method for extracting gold from ores. It is an advanced process that combines leaching and adsorption into a single operation. It is highly efficient and widely used in the mining industry.

The principle of Carbon Infiltration Leaching (CIL) is based on the principle that by crushing and grinding gold-bearing ores and immersing them in a cyanide-containing solution, the gold is oxidized by the cyanide to [Au(CN)2]- ions, which form gold cyanide dissolved in the solution. Then, the strong adsorption property of activated carbon is used to adsorb the cyanide gold ions in the solution to realize the extraction of gold.

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APPLICATION FIELDS

FEATURES

The main advantages of the Carbon In Leach Process (CIL) include high efficiency, low cost, and environmental protection.

High Efficiency: CIL can complete the dissolution and adsorption of gold in a relatively short time, greatly shortening the production cycle and increasing the treatment capacity. Due to the synchronization of cyanide leaching and activated carbon adsorption, gold ions are adsorbed onto the activated carbon as soon as they are formed, reducing gold loss.
Cost-effectiveness: Carbon leaching simplifies the operation process, reduces equipment investment and maintenance costs, and lowers overall operating costs. In addition, the reduction of intermediate links saves energy consumption and further reduces production costs.
Environmentally Friendly:Although the use of cyanide carries certain environmental risks, the charcoal leaching method can effectively control the amount of cyanide used, reduce wastewater discharge, and reduce environmental pollution by optimizing the process flow.