How to distinguish good activated carbon from bad activated carbon? Is the iodine value really the only criterion? Why is it said that some activated carbon with an iodine value of over 1000 is still not good? What is the reason for this?

The standard for judging the quality of activated carbon is based on two factors. Firstly, the higher the iodine value, the better the adsorption capacity, and the more fragile the activated carbon, making it unsuitable for carbon slurry. Secondly, the amount of residue after the activation carbon which is burned should be minimal. The residue can affect the smelting recovery rate of gold.