carbon is the best for extracting gold?

                                         Which activated carbon is the best for extracting gold?
Gold, as we are all too familiar with, is worth its weight in gold. Since ancient times, many people have been engaged in metallurgy. Activated carbon can also be well used in metallurgy. Many customers will ask: Which activated carbon is the best for extracting gold? This will take you to have a look:
First, gold extraction activated carbon three categories:
Coconut shell gold carbon special, fruit shell gold special activated carbon, columnar gold special activated carbon.
Second, the advantages of gold extraction activated carbon:
The activated carbon for gold has the characteristics of uniform particle size, strong adsorption force and high wear resistance, which is suitable for modern gold mining and production, mainly used for heap leaching or carbon pulp extraction of gold metallurgy industry in the separation and extraction of precious metals.
Third, which activated carbon is the best for extracting gold?
Many shell activated carbon can also be used to extract gold, but after testing apricot shell and peach shell activated carbon can be used to adsorb gold, but the effect is not as good as coconut shell gold purification with activated carbon effect, and the hardness of activated carbon is not good, coconut shell activated carbon production process is first to break raw materials, and then screening, Then the cocoanut gold activated carbon was processed by carbonization and high temperature catalytic activation.
Fourth, the principle of coconut shell extraction of gold carbon:
1. Gold in cyanide solution is adsorbed on the inner surface of activated carbon in the form of ion pairs or neutral molecules, or complex ions are combined with metal ions to precipitate in the gaps of activated carbon, where metal ions come from the ash of solution or activated carbon (these metal ions may have Ca, K, Na, etc.).
2, Au(CN)2- Chemical decomposition occurs to generate insoluble AuCN, and remains in the carbon gap.
3, part of the gold-cyanide complex is reduced to some gold atomic compounds containing oxidation states of 0 and 1.
4, Au(CN)2- or AuCN is reduced to metal Au.
Coconut shell gold purification activated carbon is mainly used for heap leaching or carbon pulp method to extract gold, coconut shell activated carbon can directly recover gold from cyanide gold-containing solution effectively, and good selectivity, strong adaptability, can be reused. The activity of coconut shell activated carbon is the key factor to ensure its reuse.