Project background

As an important precious metal resource in the world, the efficient extraction technology of gold mines has always been a hot topic in the field of mining.CIL (carbon leaching method) is a mineral processing process widely used in gold mine extraction, especially suitable for processing gold-containing oxidized ores.This article will introduce a successful case of a gold mine CIL mineral processing project, which is located in a gold mining area in South America.

Customer profile

The client is an international mining company with multiple gold mining projects around the world.The company is committed to adopting environmentally friendly and efficient mineral processing technology to improve the extraction rate and economic benefits of gold mines.

Project challenge

The main challenges facing the gold mine project include：

1. The grade of gold ore fluctuates greatly, which affects the mineral processing efficiency.

2. Environmental protection regulations are strict, and the mineral processing process must meet environmental protection standards.

3. It is necessary to reduce operating costs and improve the overall economic benefits of gold mines.

Introduction to CIL mineral processing process

The CIL process is a method of mixing gold ore with a chemical solvent (such as a cyanide solution), dissolving the gold from the ore through a chemical reaction, then adsorbing the dissolved gold through activated carbon, and finally extracting the gold by elution and smelting.

solution

1. Ore pretreatment: Jaw crusher and ball mill are used to crush and grind the ore to ensure uniform ore particle size and improve the gold leaching rate.

2. CIL tank design: A multi-stage CIL tank is designed to optimize the leaching efficiency of gold by controlling the pH value and temperature.

3. Activated carbon adsorption: Activated carbon with high adsorption performance is selected to effectively adsorb dissolved gold.

4. Elution and smelting: Advanced elution technology and smelting equipment are used to ensure the efficient recovery of gold.

Project results

1. Improve the gold recovery rate: By optimizing the CIL process, the gold recovery rate has been increased by 15%.

2. Reduce operating costs: The automated control system reduces manual operation, reduces energy consumption and operating costs.

3. Environmental protection standards: The entire mineral processing process complies with local environmental protection regulations and reduces environmental pollution.

4. Significant economic benefits: After the project was put into operation, the annual output of gold mines increased by 20%, which significantly improved economic benefits.

Equipment configuration table：