CARBON AND RESIN TECHNOLOGIES FOR GOLD RECOVERY
Cyanide leaching has been the industry standard method for recovering gold from ore for decades.
Carbon has been traditionally used to recover gold from cyanide leachates, let me make a brief indroduction for carbon technology on recover gold.
CIP (CARBON-IN-PULP) / CIL (CARBON-IN-LEACH) / CIC (CARBON-IN-COLUMNS)
In each, activated carbon is used to extract gold from the cyanide leach solution. Such a carbon recovery system offers high recovery rates and lower capital and operating costs. These carbon recovery techniques include:
Carbon-in-pulp
The ore is crushed, finely ground and mixed with the cyanide leach solution to form a slurry in an agitation tank. The activated carbon is introduced into the slurry and then removed by screening once it is fully loaded or “pregnant” with gold.
Carbon-in-leach
This process is very similar to the CIP process. The main differences lie in the preparation of the slurry and method for removing the gold from the leachate. In a CIL process, the carbon is mixed with the leachate solution, not with pulp. This is a much less abrasive system meaning that the carbon lasts much longer than in a CIP process.
Carbon-in-columns
During this process, the cyanide leaching solution passes through columns filled with ore. The process is highly effective for removing gold from low grade ore.
but recent technological advances have resulted in the use of resins as a highly efficient and cost-effective method of gold recovery. Ion exchange resin is replacing carbon as the gold recovery substrate of choice. The process used in resin recovery is similar to carbon, but the gold is adsorbed onto solid spherical polystyrene resin beads rather than activated carbon grains.
RESIN RECOVERY TECHNOLOGIES
RESIN RIL (RESIN-IN-LEACH)/RIP (RESIN-IN PULP)
Lanlang corp could supply you premium gold extraction resin.
Resin recovery offers all the advantages of carbon recovery, with some additional benefits:
Clear-cut mechanical and engineering advantages over carbon-in-column (CIC) recovery as a result of the flow characteristics of resin beads
The size of the synthetic resin particles is more consistent than the natural carbon particles, allowing for easier control when adding adsorbant
Better recovery rates are obtained from refractory ores or those containing high levels of clay or organic compounds
Contact Lanlang ion exchange resin corp in the planning stage of your gold project. Our gold extraction resin can give you an efficient and cost-effective gold extraction method.
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