When it comes to gold extraction, in addition to the common carbon slurry method and carbon leaching method, the zinc powder replacement process is also one of the common gold extraction processes. What do you know about the zinc powder replacement process?
The principle of zinc powder replacement process is to use zinc powder as reducing agent to replace gold and silver from the leaching solution. In industry, there is also a zinc wire replacement process which uses zinc wire instead of zinc powder. Its operation process is similar to that of zinc powder replacement process.
What operations does the zinc powder replacement process include?
1. Washing: Separate the cyanidated precious liquid (leaching solution) from the solid.
2. Purification: remove the suspended matter in the noble solution (leaching solution), so that the noble gold-containing noble solution that enters the replacement operation can be clear
3. Deoxygenation: remove dissolved oxygen in your noble liquid (leaching solution)
4. Replacement: Replace the precious metals in the noble solution (leaching solution) with zinc powder to form gold sludge.
Replacement application of zinc powder
In production practice, zinc powder (zinc wire) can be used to replace precipitation to recover gold, that is, the so-called cyanidation zinc replacement process (CCD method and CCF method), and zinc powder replacement can also be used for pool leaching or heap leaching to treat precious liquid (leaching liquid). Generally speaking, the gold ore with high silver content can be treated by zinc powder replacement, which is beneficial to the recovery of silver in the ore. in addition, the zinc powder replacement process can also be used to treat the gold concentrate that needs to be upgraded.
Be sure to check back often, as we are in the process of adding new knowledge.
If you need immediate assistance, please contact us at the following:
DESEN MINERAL PROCESSING EXPERT
Whatsapp:+8613319277356