In indirect gold heap leaching, pregnant solution quality directly influences gold adsorption, leaching stability, and total recovery.

Many mines face serious problems such as impurity buildup, slow precipitation, and difficult solution recycling.

To solve these common issues, Zhengzhou Jinquan Mining Equipment has developed a mature impurity removal system.

Specifically, we combine activated carbon adsorption with high-efficiency purifying agents to ensure stable and reliable performance.

 

 

First, we add activated carbon into the gold-bearing pregnant solution from heap leaching.

Then, we let the carbon fully adsorb gold for 10 to 30 days.

Once saturation is reached, we take out the activated carbon and send it for desorption.

This step produces desorption wastewater and regenerated activated carbon.

 

Next, we perform acid washing on the regenerated carbon.

This process removes residual impurities and restores adsorption activity.

At the same time, it generates acidic washing wastewater.

Additionally, gold sludge smelting produces smelting wastewater.

 

Afterwards, we collect all wastewater streams together.

These include desorption wastewater, acid washing wastewater, and smelting wastewater.

Then, we feed all of them into a dedicated sedimentation tank.

 

Subsequently, we add a high-efficiency impurity removal agent.

This agent quickly precipitates heavy metal impurities.

Right after precipitation, we process the sediment with a filter press.

Finally, we store the filter cake properly, and the clean liquid returns to the leaching system for reuse.

 

 

 

Our purifying agent effectively removes copper, mercury, zinc, nickel, and other heavy metals.

Moreover, it greatly speeds up the precipitation process.

 

 

The system operates stably across a broad pH range.

Most importantly, it does not negatively affect gold leaching performance.

 

 

We recycle the treated leachate continuously in the production system.

As a result, the mine can achieve complete zero wastewater discharge.

 

 

We maintain impurities at a low level in the leaching solution.

Therefore, gold leaching rate and adsorption efficiency improve significantly.

 

 

We can recover valuable metals from the sediment.

In this way, mines gain extra economic benefits from waste materials.

 

 

In summary, this impurity removal process provides a stable, eco-friendly, and high-efficiency solution for gold heap leaching plants.

Furthermore, it increases gold recovery, stabilizes daily production, and meets strict environmental protection standards.

 

Zhengzhou Jinquan Mining Equipment Co., Ltd. provides professional gold leaching equipment, complete technical solutions, and full system support.

Ultimately, we serve mining customers efficiently and reliably around the world.