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Gold extraction machinery gold carbon in pulp(CIP) processing Line high efficiency mining machine
- Section : Machinery
- Category : Mining Machinery
- SKU : 1600140166446
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Process
Raw material preparation
Grind the gold-containing materials to a particle size suitable for cyanidation, generally less than 28 mesh, and remove impurities such as wood chips. After concentration and dehydration, the concentration of the leaching slurry reaches 45%-50%.
Stirring leaching
Same as the conventional cyanidation method, generally 5-8 stirred tanks.
Carbon adsorption
The cyanide slurry enters the agitated adsorption tank (charcoal slurry tank). The Linghu Gold Mine in Henan Province is equipped with a grid screen and a slurry elevator in the slurry suction tank to realize the reverse flow of activated carbon and the slurry and absorb the dissolved gold in the slurry. Bridge screen can reduce the wear of activated carbon. At present, the sieve holes of the bridge screen are easily blocked by activated carbon and must be cleaned with compressed air.
Gold-loaded carbon desorption
This method greatly reduces the consumption of chemicals, the desorption rate is fast and the carbon cycle period is short. However, the process needs to cool before desorbing the expensive liquid to avoid boiling and splashing.
Regeneration of activated carbon
The activated carbon after desorption is first pickled with dilute sulfuric acid (nitric acid) to remove the carbonate and other accumulations. After being returned to use several times, it needs to be thermally activated to restore the adsorption activity of the carbon.
Working Principle
Gold extraction by carbon slurry’s characteristic is that fresh (or regenerated) activated carbon is added to the last adsorption tank, and the direction of movement of the carbon is opposite to that of the slurry. Finally, the gold-loaded carbon is extracted from the first adsorption tank, so it is called countercurrent adsorption of carbon. From the front to the back of the carbon adsorption tank, the gold-containing grade of the solution gradually decreases, while the gold-loaded carbon that is picked up from the back tank gradually increases, and finally is raised by the first tank. Since the desorbed carbon or fresh carbon after acid washing and thermal regeneration in this countercurrent adsorption method of carbon has the strongest activity and the fastest adsorption rate, it can minimize the final gold grade of the final tail liquid and reduce the amount of dissolved gold from the tail.
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Advantage
1. Fast adsorption rate;
2. High ore recovery rate;
- Shipping Timeframes: All orders are processed within 2-5 business days (excluding weekends and holidays). After your order has been processed, the estimated delivery time is before 22 Jan, 2025, depending on customs, Please note that due to high demand, some items may experience longer shipping times, which will be communicated at order confirmation email.
- Order Processing Time: Please allow 2-5 business days for us to process your order before it is shipped . Orders placed after 16:00 on Fridays, or during weekends and public holidays, will begin processing on the next business day. Processing times may be extended during peak seasons or sales events.
- Manufacturing Time: Some products needs manufacturing time, the manufacturing process will take approximately 10-30 business days depending on the product. This timeframe may vary depending on the complexity of the product and current demand. but this will be communicated with you during order confirmation.
- Returns and Exchanges: We offer a 30-day return policy for most items. If you are not completely satisfied with your purchase, you may return it within 30 days of receipt for a refund or exchange. Items must be unused, in their original packaging, and accompanied by proof of purchase. Return shipping costs are the responsibility of the customer, unless the item was damaged or defective upon arrival.
Afrimart Online
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Leveraging over three decades of international trade expertise, we ensure a seamless and hassle-free importing experience, providing top-tier products at competitive prices to meet the diverse needs of African consumers.
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Address: B21, China Town Mall Midrand, 1685
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Contact Seller: (011) 805 0386
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