Gold CIL Process


The CIL carbon leaching process for gold ores is suitable for large gold ores with high grade and associated gold ores with high content of silver and copper. Treatment of flotation gold concentrate or treatment of amalgam and gravity separation tailings cyanidation plant; treatment of argillaceous oxidized ore, using all sludge cyanidation of gold extraction plant.

Process introduction

Gold CIL (Carbon in Leach) Process is an efficient design of extracting and recovering gold from its ore. By cyaniding and carbon leaching crushed gold ore slurry simultaneously, CIL process lower the gold mining operation cost and increase gold recovery rate to a degree of 99%. It has become the first choice of modern gold mining and beneficiation plant design.

After Crushing and Comminution, add the gold ore slurry into Leaching Agitation Tanks, pour in cyanide solution in the first tanks and  Activated Carbon in the following tanks for the reverse-absorption process–This design shortens the time period of gold staying in the cyanide pregnant solution and recovers gold in advance, which sees a faster investment return compared to other designs.
Filter Press and Vibrating Screen is needed in gold ore slurry reverse-transmission process.

After the carbon leaching and Elution of gold, NaCN and NaOH solution is used for removing the gold from loaded carbon at a high temperature. Then the loaded solution passes through the electro winning cell and the metals are attached to cathodes.
The Desorption Electrolysis System can successfully aggregate these steps in one processing unit, the pure gold and other useful metals are highly attained via this system.