Carbon-in-pulp (CIP) is the sequential leach then absorption of gold from ore. During the CIP stage, pulp flows through several agitated tanks where sodium cyanide and oxygen have been added to dissolve gold into solution. In the absorption stage, this solution flows through several agitated tanks containing activated carbon.
Carbon-in leach (CIL) is a simultaneous leach and absorption process. The simultaneous leach and absorption phases of the CIL process were developed for processing gold ores that contain preg-robbing materials such as natural absorptive carbon. These reduce the gold yield by attracting gold meant for the activated carbon.
Gold ore Mining Separation Beneficiation Cip Gold Processing Plant
In Gold CIL (carbon in leach) Processing Plant, activated carbon acts like a sponge to aurocyanide and other complex ions in solution.Hard carbon particles (much larger than the ore particle sizes) can be mixed with the ore and cyanide solution mixture.The gold cyanide complex is adsorbed onto the carbon until it comes to an equilibrium with the gold in solution.Because the carbon particles are much larger than the ore particles, the coarse carbon can then be separated from the slurry by screening using a wire mesh.
Widely Used Rock Gold Solution1:
1.The principle of more crushing and less grinding is achieved. The ore particle size is crushed to 10-12mm or less by three-stage-crushing with singlec losed circuit stage process to reduce the load of the grinding system.2.Use New flotation reagents The fiotation results can be greatly improved by using compound collectors instead of traditional xanthate collector.3.Pneumatic flotation machine is used to ensure the flotation effect Pneumatic fiotation machine is adopted to obtain good ore beneficiation indicators.4.High degree of automation Through the automatic control system, the whole process of ore beneficiation is under monitoring,so the production line can be large -scale, automatic and easy to manage and control.
Widely Used Rock Gold Solution3:
Hard-Rock Gold Mining With Wet Pan Mill + Shaking Tables
1.Hopper+vibration feeder:Raw materials will feed into the hopper by truck or excavator as you want,then the materials will feeded into the jaw crusher by the vibration feeder automatically. 2.Jaw crusher:Jaw crusher is uesd to crush the rock gold ore, different model of the jaw crusher is with different input size,discharge size and capacity.the model of the jaw crusher is chosed based on the ore size and the capacity you want to process,big ore size need big model and more cost.3.Belt conveyor:Belt conveyor is used transport the discharge from the jaw crusher to the hopper,it works automatically, will save much manual work.and the length and width can be customized as you requested.4.Hopper+trough feeder:There are two functions of the hopper and trough feeder.5.Belt conveyor:Belt conveyor is used transport the discharge from the hopper to the hammer crusher,it works automatically,will save much manual work.And the length and width can be customized as you requested.6.Hammer crusher:Hammer crusher is used to small the discharge from the jaw crusher,because the feeding size of the wet pan mill is 0-25mm.The discharge from the jaw crusher hard to meet the needs of the wet pan mill.The hammer crusher can do work successfully, there is a sieve under the hammer crusher and the sieve size can be customized as you want, minimum sieve size can be 2mm,the smaller size you feed into the wet pan mill, the more efficent work you will get.7.Wet pan mill:For the rock gold ore, sometimes the gold can be released under the size 0-2mm or 0-1mm or 0-200mesh.These output size will need different machines and also depends on the ore condition.If you need to grind the ore to 0-1mm, you may need the wet pan mill.8.Shaking table:The shaking table is used to get the gold concentrate from the raw materials.When you add the water and materials to the shaking table, the gold will be separated from other stones and minerals which the gravity is lower than the gold.9.Gold smelting furnace:The gold concentrate from the shaking table can be smelted to the gold bar by the gold smelting furnace.Will easy to carry the gold and in case of missing.
It is mainly suitable for processing low sulfur oxidized minerals with a lot of sludge. Electrolytic extraction by desorption,carbon pickling and thermal regeneration, chemical preparation, wastewater treatment and gold smelting and other processes.
The carbon leach process is suitable for treating low sulfur oxidized ores with a lot of slurry, and is not suitable for high silver gold ores. Usually, the gold / silver ratio can not exceed 1: 5. At present, the best conditions for using the carbon leach method are: PH = 10-11, sodium cyanide concentration not less than 0.015% , size Activated carbon particle 1-3.35mm, the carbon type is coconut shell activated carbon, and the leach pulp concentration is 40-45%.
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.
Mobile gold cip plant
1.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).
2.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.
After leaching, gold mud in grade about 30-40% will feed into electrolysis machine or melting furnace to separate gold and carbon, after this step,
the carbon can be recycled by acid and water washing tank. At last the gold grade will be at 98% above.
After ball mill grinding, the ore pulp will be feed into thickner to dewater to achieve proper density to go next step leaching.
Under the thickner, there is enough space to build several warehouse and install a chemical mix tank.