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activated carbon gold recovery

Author:admin
Date:2022-10-14
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Coconut shell gold activated carbon


Gold adsorption activated carbon can be made of many carbon -containing substances. These substances include wood, sawdo, coal, coke, peat, wood, nucleus, hard fruit shells, sugarcu meal, bone, lignite, petroleum residue, etc. Among them, coal and coconut shells have become the original use of activated carbon. Coconut shell activated carbon is a porous carbon -containing substance. It has a highly developed pore structure and is a very excellent adsorption agent. The adsorption area of each gram of activated carbon is equivalent to eight tennis. Its adsorption effect is achieved by physical adsorption and chemical adsorption. In addition to carbon, its composition substance also contains a small amount of hydrogen, nitrogen, oxygen, and ash. to make. Due to the irregular arrangement of the Liuhuan charcoal, the characteristics of the multi -pore volume and high surface area of activated carbon are caused. Coconut shell gold charcoal is made of imported coconut shells as raw materials. It is refined by physical method. The activated carbon has the characteristics of good wear resistance, developed pore structure, and strong adsorption performance. Essence Low -mouth ore, high -profile recycling gold, is the ideal activated carbon for gold ore.


Features of gold activated carbon:


1.Golden activated carbon, choose high -quality fruit shells as raw materials. After advanced equipment, microcomputer control production process conditions, refined processing, high strength, uniform granularity, good adsorption, can be regenerated multiple times, repeatedly used.


2. Coconut shell activated carbon is a coastal carbon -containing substance. It has a highly developed pore structure and is a very excellent adsorption agent. The adsorption area of each gram of activated carbon is equivalent to eight tennis.


3. The adsorption effect is achieved by the physical adsorption and chemical adsorption. In addition to the carbon element, its composition is also contained in a small amount of hydrogen, nitrogen, oxygen, and gray. Packing. Due to the irregular arrangement of the Liuhuan charcoal, the characteristics of the multi -pore volume and high surface area of activated carbon are caused.


It has special adsorption performance for valuable metals, which is used for the separation and extraction of valuable metals. For example, in gold smelting, especially the carbon slurry method, the pile -immersing gold biscuit process has excellent effects, and it can also be used for water quality and air purification. Gold adsorbing coconut shell activated carbon is a special product developed by our company for gold mines.



activated carbon gold recovery(图1)


The working principle of gold activated carbon:


There are two ways to recover gold from gold charcoal. One is to send gold charcoal to the smelter to bake, and it can get gold through high temperature melting. This method is primitive and not economical. Another more common method is to use 0.1%-1.0%heat NACN and NAOH mixture to take off the golden carbon-to-gold complex on the golden charcoal, and then electrolytic to get pure gold. Gold adsorption charcoal will be reduced after multiple adsorption and adsorption, and regeneration must be performed.


Packing method: Gold ore that exceeds a certain content, crushed, grinds to a certain degree, stacked in the scrubbing equipment, and then sprayed with a sodium cyanide solution to dissolve the gold and silver in the ore until The medium gold content reaches a certain concentration, and then uses this golden liquid to pass through a set of adsorption columns that fill the activated carbon. Cyanic compounds are adsorbed on the huge surface of the pores inside the charcoal.


Carbon slurry method: The fineness of crushing gold ore containing gold ore to 300 meters. Add water and stir to a uniform suspended slurry. Add potassium cyanide (or sodium cyanide) solution to the slurry, and generate the cyanocytosis compound that can dissolve in water . The plasma containing cyanocytosis is fully contacting with granular activated carbon in the adsorbent tank in series. Most of the cyanal compounds are adsorbed on the surface of activated carbon. The slurry tail with only trace cyanic compounds is separated from activated carbon.