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Silver recycling method
Jul 20, 2018


Silver recycling technology mainly includes flotation, gravity election, cyanidation, and the combination of these methods.


The cyanidation method is mainly for factories and mines with high grades, no smelters nearby, and flotation machine .jpginconvenient transportation. In order to increase the efficiency, silver-gold concentrates are selected, and then gold and silver are produced by cyanidation on the spot. For the high mud oxidized ore, it can also be recovered by whole mud cyanide-carbon slurry method. The difference from gold's whole mud cyanidation is that natural silver, especially silver sulfide minerals, dissolves much more slowly than gold. It tends to use these strengthening measures “high cyanide concentration, long time and strong agitation”, so the cost is high, sometimes the effect is not very good.


 Flotation is the most important method for recovering associated silver. It is used to treat fine-grained inlays and silver minerals that are closely symbiotic with sulfide ore. Except for coarser silver, almost all of the dissociated silver can be recovered and recycled. And the process of recycling silver minerals is simple and compact and tailings are generally non-toxic.


   Shaking table.JPGGravity election is used to process silver ore with a coarse grain size and in a free state. It includes a centrifugal concentrator, hydro cyclone, a centrifuge, a heavy medium preselection, a jigging, Shaking table, spiral classifier. There is no pollution when using gravity election method to recycling silver. The grinding grain size is coarse, and the grinding cost is low. The disadvantage is that the recovery rate of the silver is low and the water consumption is large. Therefore, the flotation method is often used in gravity election.

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