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Help CenterPre-concentration Gold CIL Plant After Gravity Concentration Gold Recovery
Product Spotlights
2. Universal CIL line for all gold ores.
3. Flexible capacity: 20–5000 TPD.
4. Low power & reagent cost, high efficiency.
5. Anti-corrosion structure for longer service life.
6. Carbon recycling cuts operational consumption.
7. Intelligent control, easy & labor-saving operation.
8. Combined process enables stable 24h running.
9. Globally proven & mine-adaptable CIL technology.
10. Full one-stop turnkey mining solution.
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1. Product Description
This pre‑concentration gold CIL plant combines gravity concentration pre‑recovery with carbon‑in‑leach processing technology. Before cyanide leaching, high‑density coarse free gold is firstly recovered by gravity separation equipment. Gravity tailings are then sent into the subsequent CIL circuit for fine‑grained gold extraction. The integrated plant includes crushing, grinding, gravity pre‑concentration unit, multi‑stage CIL leaching‑adsorption, elution‑desorption, electrowinning and smelting modules. It reduces gold load for cyanide leaching section, cuts reagent consumption and improves overall total gold recovery rate. Suitable for gold ore containing large amount of coarse free gold, this combined process can be customized according to ore grain size analysis and mineral test results.
2. Working Principle
Raw gold ore is crushed and ground to qualified particle size. Coarse free gold particles with high specific gravity are separated and recovered via gravity concentration equipment in the pre‑concentration stage. Recovered coarse gold can go directly to smelting procedure. The gravity tailings containing fine‑grained disseminated gold are pumped into multi‑stage CIL leaching tanks. Fine gold is leached by cyanide reagent and adsorbed by activated carbon. Loaded carbon flows to elution‑desorption system to produce gold‑rich eluate. Gold‑rich solution enters electrowinning unit to precipitate gold mud, and gold mud is smelted to obtain gold alloy bar. By recovering coarse gold in advance, the system avoids over‑grinding of coarse free gold and lowers processing pressure of follow‑up cyanide leaching system.
3. Core Features
Combined gravity pre‑concentration and CIL flow, realize staged recovery of coarse and fine gold.
Recover coarse free gold ahead of cyanide leaching, improve overall gold recovery efficiency.
Reduce gold feeding load of CIL leaching tanks, effectively decrease cyanide consumption.
Avoid excessive grinding of coarse gold particles, lower energy loss in grinding section.
Flexible gravity unit configuration, match different coarse‑gold content ore conditions.
Stable connection between gravity tailings and CIL main line, convenient for process operation and adjustment.
Complete modular assembly, applicable for new plant construction or transformation of existing gold CIL processing lines.
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