How to recover gold from precious liquid?

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Recovering gold from precious liquid is an important part of the gold ore processing process. The commonly used methods for recovering gold are zinc powder replacement method, slurry resin method and electrodeposition method. Let's learn about these three methods of recovering gold from precious liquid!

1. Zinc powder replacement method to recover gold from precious liquid

This method is to achieve solid-liquid separation of slurry in the clarified liquid of decompression and deoxygenation, and the anion complex of gold undergoes a replacement reaction with zinc. The zinc powder replacement method is used to recover gold. The reaction is rapid and the gold recovery rate is high. The reaction equipment is simple and easy to operate. It is currently one of the most widely used methods for recovering gold from precious liquid.

2. Resin method to recover gold from precious liquid

The resin and the ore containing organic carbon or substances with gold adsorption are present in the slurry at the same time, and the resin can preferentially adsorb the dissolved gold. The resin method is different from other cyanidation methods. It can improve the gold recovery rate, the gold loading per unit area is large, the gold adsorption capacity is high, the ion resin has the ability to regenerate and can be recycled. In addition, the gold recovery system equipment is small and does not require too much investment. The disadvantage of this method is that the resin is unevenly dispersed in the slurry, and it is not easy to separate from the slurry after adsorbing gold.

3. Electrodeposition method to recover gold from precious liquid

In cyanide slurry, according to the deposition principle of Au(CN)^2- in the solution, the electrodeposition method can directly extract gold. Under the action of the DC electric field, gold is deposited on the cathode. Electrodeposition method has been widely used in the field of efficient recovery of gold from finely ground gold ore leaching precious liquid. Its process is simple, and its deposition rate is higher than that of zinc powder replacement method. Its maximum deposition rate can reach 99%, with low cost and high efficiency. Its difficulty lies in improving current efficiency and improving material transfer.

The above are three methods to recover gold from precious liquid. Xinhai Mining has more than 30 years of rich experience in gold ore dressing and smelting. It will design suitable gold ore dressing and gold extraction processes and complete sets of gold ore dressing equipment for it according to the properties of the ore. If you have any needs, please feel free to consult.