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Using ion exchange resin to adsorb and recover Gold and Silver from the Cyanide electroplating waste water and Cyanide pulp is the most effective and most widely used method. D301-GB is a macroporous polystyrene-based weak base exchange resin. It has very strong affinities to cyanide gold and silver complex anions. Its capacities for Gold and Silver are very high (over 4 times higher than these of Activated Carbon). And also, this resin has good mechanical strength, good chemical stability, good organic fouling oxidation resistance. The resin has high selectivities for Gold and Silver. And finally, the resin has a good dynamic property, can be easily regenerated.
D301-GB resin is usually used in two different cases: one is that the cyanide liquid is already filtrated and clear. Then the resin’s particle sizes should be 0.4-1.25mm. Another is the cyanide pulp, which contains the ground fine ore particles. The resin’s particle sizes then should be 0.8-1.6mm to separate the resin beads from the ore particles. This is also call RIP process. Because cyanide liquid usually has a complicated composition. The resin, besides adsorbs gold and silver, will adsorb small amount of other metals as well. So, the saturated resin is eluted usually by two steps: First by diluted NH4SCN (about 10g/L) and NaOH (10-20g/L) to elute heavy metals such as copper, zinc etc. Second, by more concentrated NH4SCN (about 200g/L) and NaOH (about 5g/L) to elute completely Gold and Silver.
According to the processes selected, before being re-used, the resin may need to be treated with hydrochloric acid or caustic soda.
Functional Group | Al |
Fluoride Capacity g/L≥ | 1 |
Water Retention % | 45-55 |
Density g/ml | 0.75-0.85 |
Particle Size % | (0.4-1.25mm)≥95 |
Thermal Stability (℃) | 80 |
Best Suitable pH | 5-9 |
Shipping Ion Form | Al |
Using ion exchange resin to adsorb and recover Gold and Silver from the Cyanide electroplating waste water and Cyanide pulp is the most effective and most widely used method. D301-GB is a macroporous polystyrene-based weak base exchange resin. It has very strong affinities to cyanide gold and silver complex anions. Its capacities for Gold and Silver are very high (over 4 times higher than these of Activated Carbon). And also, this resin has good mechanical strength, good chemical stability, good organic fouling oxidation resistance. The resin has high selectivities for Gold and Silver. And finally, the resin has a good dynamic property, can be easily regenerated.
D301-GB resin is usually used in two different cases: one is that the cyanide liquid is already filtrated and clear. Then the resin’s particle sizes should be 0.4-1.25mm. Another is the cyanide pulp, which contains the ground fine ore particles. The resin’s particle sizes then should be 0.8-1.6mm to separate the resin beads from the ore particles. This is also call RIP process. Because cyanide liquid usually has a complicated composition. The resin, besides adsorbs gold and silver, will adsorb small amount of other metals as well. So, the saturated resin is eluted usually by two steps: First by diluted NH4SCN (about 10g/L) and NaOH (10-20g/L) to elute heavy metals such as copper, zinc etc. Second, by more concentrated NH4SCN (about 200g/L) and NaOH (about 5g/L) to elute completely Gold and Silver.
According to the processes selected, before being re-used, the resin may need to be treated with hydrochloric acid or caustic soda.
Functional Group | Al |
Fluoride Capacity g/L≥ | 1 |
Water Retention % | 45-55 |
Density g/ml | 0.75-0.85 |
Particle Size % | (0.4-1.25mm)≥95 |
Thermal Stability (℃) | 80 |
Best Suitable pH | 5-9 |
Shipping Ion Form | Al |
