quotation for gold agitation tank machines

leaching agitation tank, leaching tank for gold extraction, leaching equipment - xinhai

leaching agitation tank, leaching tank for gold extraction, leaching equipment - xinhai

With dual impellers rotating and agitating, ore pulps move downward and then diffuse along damping plate. Air is fed in tank from the lower end of shaft, and blended with ore pulps to form uniform suspending mixed liquid.

In the gold cyaniding process, leaching agitation tank is applied to leach and carbon-absorb ore pulps whose fineness is -200 meshes and whose density is less than 45%. Under similar circumstance, it is also applied to agitation and leaching in metallurgy, chemical and light industry.

Technical Parameters Model Tank Spec. (DX H) (mm) Effective Volume (m3) Rotating Speed of Impeller (r/min) Diameter of Impeller (mm) Motor Model Motor Power (kW) Reducer Model Tank Weight (kg) Total Weight (kg) SJ2.0X2.5 2000X2500 7.07 52 909 Y100L1-4 2.2 XLD2.2-4-29 1609 2144 SJ2.5X2.5 2500X2500 10.8 43 935 Y112M-4 4 XLD4-5-35 2159 2729 SJ2.5X3.15 2500X3150 13.92 52 935 Y100L1-4 2.2 XLD2.2-4-29 2398 3095 SJ3.0X3.0 3000X3000 19 43 1130 Y112M-4 4 XLD4-5-35 3480 4583 SJ3X3.15 3000X3150 20 3480 4160.6 SJ3X3.5 3000X3500 22.97 3211 4334.6 SJ3.15X3.55 3150X3550 25.73 1260 3433.5 4322.8 SJ3.5X3.5 3500X3500 31.3 52 1310 Y132S-4 5.5 XLD5.5-5-29 3480 5025 SJ3.5X4 3500X4000 35.6 4230 5429 SJ3.55X4.0 3550X4000 36.8 43 4 XLD4-5-35 4260 5025 SJ3.7X4.2 3700X4200 42 42 Y112M-4 XLD4-5-43 5266 6153 SJ4.0X4.5 4000 X4500 52.78 35 1750 Y132M-4 7.5 XLD7.5-7-43 6397 7569 SJ4.0X6 4000 X6000 71 33 1750 Y160M-4 11 GRF137-Y11-4P-44.65-M4 7681 9200 SJ4.5X5.0 4500 X5000 74.75 35 1750 Y132M-4 7.5 XLD7.5-7-43 8614 10864 SJ5.0X5.6 5000X5600 104.5 31 2046 Y160M-4 11 XLD11-8-47 8740 14291 SJ5.5X6.0 5500X6000 135.42 2100 12467 18745 SJ6.5X7.0 6500X7000 215 21 2400 Y180L-4 22 GRF147-Y22-4P-70.87 17890 25978 SJ7.0X7.5 7000 X7500 269 2400 Y200L2-6 22 XLD22-10-47 20505 29030 SJ7.5X8.0 7500 X8000 331 23 2900 Y200L2-6 22 BLD7-43-22L 22552 32796 SJ8.0X8.5 8000X8500 402 18.5 3300 Y250M-8 30 TPS315-3F 30559.5 42467.3 SJ8.5X9.0 8500X9000 480 18.5 3300 Y250M-8 30 TPS315-3F 34130 46623 Related Articles The equipment you need to know in CIP process Guestbook Please leave your message here! We will send detail technical info and quotation to you! * Products: Mineral processing test Mineral processing production line Mineral tailings process Mineral processing equipment * Materials: Gold Silver Copper Iron Lead Zinc Fluorite Feldspar Chrome Manganese Nickel Tin Wolfram Antimony Vanadium Barite Calcite Graphite Zircon Others * Capacity: * Name: * Email: * Location: * Tel: * Message: Please leave details, so we can give you a suitable quotation. Related Products Zinc Powder Displacement Device | Washing Thickener | Desorption Electrolysis System |

gold agitation cyanidation leaching

gold agitation cyanidation leaching

The agitation leaching method is to concentrate the slurry, obtained after grinding and classifying of the gold-containing ore, to a suitable concentration, place it in a leaching tank, add a cyanide solution, and aerate to carry out leaching. The main equipment used in the agitation leaching process is a cyanide leaching tank. According to the different mixing methods, cyanide leaching tanks are divided into three types:

3. Air-mechanical combined agitation leaching tank, a perfect combination of the two leaching tanks (1) and (2), with both effective mechanical and compressed air agitator. The fast dissolution of gold is the main advantage of this device.

Agitation leaching is suitable for process materials having a finer particle size, i.e., less than 0.3 mm. The advantages of this method are: high leaching speed, large processing capacity, mechanized operation, and high gold extraction rate. This conventional cyanidation method is one of the more widely used methods in the gold cyanidation process. According to the different ores processed, it can be divided into: the whole mud cyanidation method for directly processing gold ore, and the concentrate cyanidation method for process gold concentrate.

For sulfide gold-bearing ores, flotation enrichment is often used. Or separating out some gold-bearing sulfide concentrates from flotation concentrates, such as gold-bearing copper concentrates, and finely grinding them to 90%-95%, -325 mesh to shorten the leaching time and improve the leaching efficiency. For ore with higher arsenic or pyrrhotite, flotation concentrate ore roasting desulfurization or arsenic removal is carried out, and then the calcine is cyanated and leached. Ore with higher carbonaceous minerals, chlorinated and then leached.

The pulp is generally leached at a concentration of 35% to 50%, and the pH is adjusted to be between 10 and 10.5 to prevent decomposition of cyanide and inhibit the cyanidation of the sulfide. The concentration of cyanide is usually maintained at about 0.06%, and the mixture is agitated under oxygenation conditions for 24 hours or more, so that 95% or more of gold is dissolved to form a gold cyanide complex.

In order to obtain sufficient separation between the cyanide leachate and the leach residue, a washing process of 3-5 stages of thickening, filtration or a mixture of the two is generally employed. This is a key operation for cyanide leaching, which often results in a decrease in recovery rate due to the difficulty in selecting or incompletely separating the mud.

Maintain a high replacement rate and high grade gold mud, mainly using a clarification filter to reduce the suspended matter in the leachate from 70-100ppm to 5-7ppm, and deoxidize by vacuum to reduce the oxygen content in the solution to less than 1ppm.

The gold cyanide complex in the leaching solution is replaced with a metal to form a cyano complex of the replacement metal to precipitate gold. In order to obtain a more effective displacement reaction, a lead salt of about 0.005% is maintained in the solution, and the oxygen content in the solution is minimized to prevent oxidation of the zinc surface and reverse oxidation of the displaced gold, and precipitate the gold mud. Residual metal in the middle. It is removed by pickling to maintain a high-grade gold mud with a gold content above 30%.

The gold mud and the flux are generally smelted and slag at a furnace temperature of 1000-1100 degrees Celsius for about three hours at a ratio of 1:0.8-1 to obtain a gold ingot having a gold content of 95% or more.

The zinc powder replacement method is the most used metal replacement method. Zinc powder is a very fine metal substance that provides favorable conditions for more complete and faster precipitation of gold. However, zinc powder is easily oxidized and must be tightly closed during transportation or storage.

According to the different replacement methods in the separation stage, the agitation leaching method can be divided into two types of processes: metal replacement and carbon adsorption: The metal replacement is a so-called conventional cyanidation gold extraction process (CCD method and CCF method) which performs continuous countercurrent washing with a thickener and replaces the precipitated gold with zinc powder. Carbon adsorption is a non-filtered cyanide carbon slurry process (CIP method and CIL method) that does not require filtration or washing, and uses activated carbon to directly adsorb gold from cyanide pulp.

After the civil engineering, installation and commissioning of the process design, it has been put into operation. Finally, the CIL gold leaching rate is 91.5%, which brings considerable economic benefits to the mine owner.

After the crushing and grinding stage of the CIL gold ore process, the slurry is added to 9 Xinhai high-efficiency cyanide leaching tanks arranged in a stepped manner. The cyanidation of the gold slurry is first carried out in the first 2 leaching tanks, and adding activated carbon to the countercurrent adsorption operation while performing cyanidation in the subsequent 6-7 leaching tanks.

Compared with the CIP gold mining process and other traditional processes, the CIL gold mining process of the plant greatly shortens the cyanide operation time. Taking the 7.5g/t gold ore cyanide plant with a capacity of 100,000 tons per month as an example, the CIL carbon leaching method saves investment costs of 486,000 US dollars compared with the CIP carbon slurry method, reducing the backlog of gold retention in production of 210,700 US dollars. After deducting the cost of the $12.60 million spent on activated carbon, the savings and early recovery of funds were $675,100.

In the process of adding activated carbon, the imported coconut shell activated carbon (small hole, high activity, wear resistance and regenerability) specially selected by the plants ore dressing design institute is added to the pulp, and the gold-loaded carbon appears with the gold and silver ions are dissolved and adsorbed by the characteristics of adsorbing gold and silver. This process does not affect the dissolution of the process due to excessive ion concentration, greatly improving the recovery rate of precious metals such as silver and copper in the associated metals, and significantly improving economic benefits.

The vibration and dewatering equipment is the key equipment for the reverse movement of pulp and carbon. The hydraulic filter press and high-efficiency high-frequency dewatering screen designed by the plant can effectively reduce the carbon wear of the slurry on the continuous pumping and vibrating screen surface and reduce the cost. Easy to maintain operations.

The central aeration riser used in the mixing process can make the slurry a small cycle. Compared with other mechanical agitation tanks, Xinhais design can reduce the power consumption by 70%, and the solid materials are uniformly suspended, and the activated carbon wears little. The recovery rate is high. It is an important equipment in modern cyanide plants.

The integrated operation desorption electrolysis system of the plant uses high-temperature desorption electrolysis of gold in gold-loaded carbon using a mixture of sodium cyanide and sodium hydroxide. First, the wood scraps and other debris are removed by a pan wash, and then the gold desorption is performed at a temperature of 150 C and 0.5 Mpa using a high temperature and high pressure desorption method. This design can put 99% gold in 2-6 hours desorption down.

The concentration of gold and silver cyanide complex ions in the pregnant solution obtained by desorption of gold-loaded carbon is higher, and the impurity ions are greatly reduced. It provides an ideal solution for the reduction and recovery of gold from the noble liquid by electrowinning method. The high-purity solid gold can be obtained safely and economically by the treatment of the desorption electrolysis system.

leaching equipment, leaching tank, gold leaching - xinhai

leaching equipment, leaching tank, gold leaching - xinhai

[Improvement]: Leaching agitation tank for gold extraction is improved with double impeller, uniform mixing, low energy consumption; the impeller coated by rubber, long service life; multi points to supply with the gas, uniform inflation.

With dual impellers rotating and agitating, ore pulps move downward and then diffuse along damping plate. Air is fed in the tank from the lower end of shaft, and blended with ore pulps to form uniform suspending mixed liquid.

In the gold cyaniding process, leaching agitation tank is applied to leach and carbon-absorb ore pulps whose fineness is -200 meshes and whose density is less than 45%. Under similar circumstances, it is also applied to agitation and leaching in metallurgy, chemical and light industry.

gold extraction, gold cyanide, gold manufacturing process - xinhai

gold extraction, gold cyanide, gold manufacturing process - xinhai

[Introduction]: Gold CIL process (carbon in leach) is an efficient method of extracting and recovering gold from its ore. By cyaniding and carbon leaching crushed gold ore slurry simultaneously, CIL process lowers the gold mining operation cost and increases gold recovery rate to 99%, which is the first choice of modern gold mining and gold beneficiation plant.

[Application]: CIL mainly applies for the process of above 1g/t grade gold ore and gold ore with large bearing ore volume: silver, platinum, copper, etc. And CIL has a better performance in extracting these minerals at the same time.

After the crushing and grinding stage, add 9 step-arranged high-efficiency cyanidation leaching tanks into the pulp. Gold pulp cyanidation is carried on the first two leaching tanks, countercurrent adsorption operation is carried on the last six or seven leaching tanks (cyanidation and adding activated carbon simultaneously).

Compared with gold CIP process and other traditional gold extraction processes, Xinhai gold CIL process greatly shortens the cyaniding time, reduces the capital backlog in the gold retention stage. Taking the gold cyanidation plant with processing capacity of 100000 tons per year and gold grade of 7.5 g/t as an example, gold CIL process can save the investment cost of $486000 than the CIP process, reduce the capital backlog of $201700, save and recycle capital of $675100 in advance excluding the cost of activated carbon.

In the adding activated carbon step, add the coconut shell activated carbon (small hole, high activity, wear-resisting and renewable) specially selected by Xinhai mineral processing design institute into the pulp, which can dissolve and adsorb the gold and silver ions then form the gold loaded carbon according to the characteristics of gold and silver adsorption.

Compared with the traditional gold extraction process, Xinhai gold CIL process ensures the gold and silver dissolution and the adsorption of activated carbon synchronously, which will not be affected by the excessive ion concentration, greatly improves the recovery rate of the precious metals (such as silver and copper) in the associated metals , and significantly improves the economic benefits.

Vibrating screen and dewatering screen are the key equipment for the reverse movement of pulp and carbon. Filter press and high frequency dewatering screen developed by Xinhai can effectively reduce the carbon wear on the surface of vibrating screen and in the process of continuous slurry pumping, and reduce the cost, facilitate the maintenance and operation.

Air lifter used in the agitation process can make the slurry carry on small minor-cycle. Compared with other agitation tanks, Xinhai air lifter can reduce the power consumption by 70%, making the solid materials uniformly suspended, the activated carbon less worn, and the gold recovery rate higher, which is an important equipment in a modern cyanide plant.

Xinhai desorption electrolysis system implements high-temperature desorption electrolysis on gold in the gold-loaded carbon through the mixed liquor of sodium cyanide and sodium hydroxide. After wood chips and other sundries are removed by washing machine, and the gold desorption is carried out by Xinhai high-temperature and high-pressure desorption method (150 degrees and 0.5Mpa), which can resolve 99% of gold within 2-6 hours.

The pregnant solution obtained by the desorption of gold-loaded carbon contains higher concentration of gold and silver cyanidation complex ions, while the impurity ions are greatly reduced, which provides an ideal solution for the reduction and recovery of gold from the pregnant solution by electrodeposition. Finally, with Xinhai desorption electrolysis system, the solid gold with high purity can be obtained safely and economically.

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