Silver recycling technologies mainly include flotation, re-election and cyanidation, as well as the combination of these methods.
The cyanidation method is mainly for factories and mines with high grades, no smelters nearby, and inconvenient transportation. In order to increase the efficiency, silver- gold concentrates are selected, and then gold and silver are produced by cyanidation on the spot. The whole mud cyanide-carbon slurry method is recovered. The difference from gold's total mud cyanidation is that natural silver, especially silver sulfide minerals, dissolves much more slowly than gold. It tends to use high cyanide concentration, long time, strong agitation and other strengthening measures, 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. Silver minerals are simple and compact, and tailings are generally non-toxic.
Re-election is a silver ore used to dispose of monomer dissociation, ie silver with a coarse grain size and in a free state. It includes a Nelson centrifugal concentrator , a short cone hydrocyclone, a centrifuge, a heavy medium preselection, a jigging, Shaker, spiral classifier, Laibuchet cone concentrator. There is no pollution when re-electing silver, the grinding grain size is coarse, and the grinding cost is low. The disadvantage is that the silver recovery rate is low and the water consumption is large. Therefore, the flotation method is often used in re-election.
1. Simple exploration of mineral processing test - before the purchase of mineral rights, meet the investment analysis and reduce the initial value assessment of investment risk.
2. Feasibility test of ore - It is used for detailed geological analysis and analysis, to meet the evaluation certificate, and to determine the reasonable process and reasonable process indicators.
3, system process test - practically used before the construction of the plant, meet the design finalization, find the law to determine the best process indicators.
4, technical research and research - the use of mine disaster technology is unsolved, to meet the improvement of efficiency, product failure to recover low cost and high time.
5, process flow verification test - the actual use of ore properties comparison, to meet the choice of pharmaceutical plants, the mine has different ores to determine the adaptability.
6, process flow test - practically used to produce the factory, to meet the current factory investigation, the selection of factory physical examination analysis and plant selection.
1, determine the type of ore ---- need to do spectral analysis and rare element test.
2, to identify the specific nature of the ore - need to do multi-element analysis to determine the content of valuable and harmful elements.
3, to find out the relationship between minerals in the ore, content and composition - the need to do rock ore identification has important guiding significance for mineral processing.
4. Determine the specific existence form and distribution of elements in the ore. It is necessary to do phase analysis and have guiding significance for mineral processing.
5, concentrate, tailings test --- need to do valuable elements and harmful elements.
6, the original ore and concentrate water, the proportion of ore is determined - the actual measurement of mineral processing.
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