gold cip production line x

cip system, gold recovery, cip process, cip gold processing - xinhai

Gold CIP Production Line adsorbs gold from cyaniding pulp by active carbon including 7 steps: leaching pulp preparation, cyaniding leaching, carbon adsorption, gold loaded carbon desorption, pregnant solution electrodeposit, carbon acid regeneration, leaching pulp.It is very useful gold recovery method in mineral processing.

Xinhai gold EPC project in Sudan mainly adopt the method of carbon absorption. This method adsorbs gold from cyaniding pulp by active carbon including 7 steps: leaching pulp preparation, cyaniding leaching, carbon acid adsorption, gold loaded carbon desorption, pregnant solution electrodeposit, carbon regeneration, leaching pulp, which received a high recovery rate of 90.8%.

cip system, cip process, cip gold processing - xinhai

[Introduction]: Gold CIP process adsorbs gold from cyaniding pulp by active carbon including 7 steps: leaching pulp preparation, cyaniding leaching, carbon adsorption, gold loaded carbon desorption, pregnant solution electrodeposit, carbon acid regeneration and leaching pulp.

mining engineering, extraction of metals, mineral processing, ball mills, flotation, mineral processing epc

Xinhai mineral processing equipment mainly include: grinding equipment, flotation equipment, dewatering equipment, magnetic separation equipment, and so on. Some of the equipment is Xinhai independent research and development, and has been awarded national patent. View details

Gold CIP Production Line adsorbs gold from cyaniding pulp by active carbon including 7 steps: leaching pulp preparation, cyaniding leaching, carbon adsorption, gold loaded carbon desorption, pregnant solution electrodeposit, carbon acid regeneration, leaching pulp. View details

Xinhai provides optimized solutions for your mine, one-stop service for mineral processing plant.include sample test, mine design, equipment manufacture, etc. LEARN MORE >>

how to differentiate gold cip & cil production line

Metal recovery or concentration by adsorption on activated carbon has been the dominant process for gold extraction after leaching by cyanide in aerated alkaline slurry. The continuous processes of gold recovery by adsorption on activated carbon in agitated tanks, namely thecarbon-in-pulp (CIP)and thecarbon-in-leach (CIL)processes, have been widely used since the 1970s.

Carbon-in-pulp (CIP)is the sequential leach then absorption of gold from ore. During the CIPstage, 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. Gold absorbs on to the activated carbon, which flows counter-current to the pulp, while screens separate the barren pulp from the gold-loaded carbon.

Carbon-in-leach (CIL)is a simultaneous leach and absorption process. The simultaneous leach and absorption phases of the CILprocess 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. Simultaneous leaching and absorption help minimize the problem.

In theCIL (Carbon in Leach)orCIP (Carbon in Pulp)plants while the precious metals are being dissolved by the cyanide solution in the large volume tanks the dissolved metals are adsorbed by the active carbon. These processes are generally preferred for the relatively high grade and lower reserve ore types with very fine graded precious metals.

The major difference between the CILand CIPprocesses is; during the CILprocess both cyanide leaching and carbon adsorption take place in the same tanks but in the CIPprocess first leaching occurs in the first couple of tanks then carbon adsorption take place in the following tanks while leaching continues. In all of these tanks agitation and air sparging is available.

gold cip production line

Gold Carbon-in-pulp (CIP) production 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.

CIP(Carbon in pulp) process is a high efficient method to leaching and recovering gold from gold ore, The most different from CIL process is in CIP process, gold leaching and adsorption are separated, first leaching, and then adsorption. Now it is being replacing by CIL process progressively. But it still have a lot of application.

CIPprocess is suitable for the treatment of oxidized gold ore with low sulfur content and mud content. It is unsuitable for the gold ore with high grade silveras well. Generally, the proportion of gold and silver should not exceed 1:5. The best conditions for CIPprocess in China: PH=10-12, sodium cyanide concentration is not less than 0.015%, the particle size of activated carbon is 1.0-3.35mm, the best choiceof carbon is coconut shell activated carbon, and the slurry concentration is 40-45%.

Usually,small or medium scale mineral processing plants can meet the requirements after two stages of crushing and one stage of screening. However, large scale mineral processingplants need three or even four stages of crushing to get qualified products.

In the classical process, the grate ball mill and the spiral classifier constitute the first stage grinding and classification unit, and the overflow ball mill and the hydro-cyclone constitute the second stage grinding and grading unit.

The overflow slurry of classification is only 18-25%, if directly leaching will result in excessive energy cost and reagent consumption. Therefore, thickening is a necessary step. In order to accelerate the settlement, a certain amount of flocculants will be added to enhance the thickening effect.

After the slurry went into the leaching tank, the solution of sodium cyanide is added into the first leaching tank accurately. Every stage of tank has a certain height difference, which can let the slurry flow automatically to the next tank.

Activated carbon is put into the the slurry at the last adsorption tank, and it is flowed reversely through the air lifter. Carbon segregation screen is set in every absorption tank's outlet to separate the carbon and slurry. After screening and washing, the gold-loaded activated carbon will be sent to the desorption operation. After absorption, the gold grade in the tailing solution will reduce to 0.01-0.03g/m.

Gold-loaded carbon and slurry are lifted by carbon pump or air-lifter to separation sieve (the most popular sieve is liner vibrating sieve). Gold-loaded carbon and slurry are separated by water on the sieve surface, and then gold-loaded carbon is sent to carbon storage tank and the slurry and water flow into the first absorption tank.

There are several desorption methods. In China, the general application methods are Zadra desorption method, high temperature and high pressure desorption method (hereinafter referred to as HTHP method) and integral pressure desorption method (hereinafter referred to as IP method).

gold cil & cip gold leaching process explained ccd

Cyanide is a lixiviant, or reagent that is used to leach, often in tanks, gold from a solid matrix and form a gold cyanide complex. The gold cyanide complex is then extracted from the pulp or slurry by adsorption onto activated carbon. CIL stands for carbon-in-leach. This is a gold extraction process called cyanidation where carbon is added to the leach tanks (or reaction vessel) so that leaching and adsorption take place in the same tanks. CIL is slightly different from another gold extraction process called CIP or carbon-in-pulp process. In the latter case leaching takes place in tanks dedicated for leaching followed by adsorption onto carbon in tanks dedicated for adsorption.

Leaching can be assimilated to the principle of preparation of tea. When we add tea in hot water, the aroma of tea will dissolve in the water and not the tea leaves. So the aromas is found in liquid form and tea leaves remains in solid form in the hot water. Thus we can separate (solid-liquid separation) tea aromas from tea leaves (filtration for example). At this stage , we have been able to extract aromas of tea from the tea leaves by changing the physical shape of the tea aromas.It is the same principle used in the leaching of gold. The gold that is in solid form in the ores turned into liquid form with cyanide in the presence of oxygen. Thats the way gold is separated from the majority of its gangue. The second step is the adsorption of gold on the surface of the activated carbon. Following a natural phenomenon known around the world (positive charges attract negative charges) Gold sticking to coal. the coal loaded with gold and some impurities is then transferred to the elution where he undergoes a cold wash which removes certain impurities and then a hot wash. The solution from the hot wash is transferred to the electrolysis where pure gold is recovered.

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. Gold absorbs onto the activated carbon, which flows countercurrent to the pulp, while screens separate the barren pulp from the gold-loaded 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. Simultaneous leaching and absorption help minimize the problem.

Process Description. The first industrial CIP plant was installed inSouth Dakota. A CIP circuit utilizes the same flowsheet as an agitated leach circuit up to the point where the slurry discharges from the final agitated leach tank. At this point, the precious metal values arc recovered directly from the slurry onto granulated activated carbon in agitated CIP tanks The carbon is retained in the tanks by any one of several different types of screens through which the slurry discharges CIP circuits are typically designed with at least four tanks to prevent short-circuiting of sluny and allow sufficient retention time for recovery of all the metals. Although agitated leach tanks are used before CIP tanks, CIP and CIL circuits are considered as a separate process.

CIL circuits are similar to CIP circuits with the exception that leaching and extraction occur simultaneously in agitated leach tanks that also contain carbon and are equipped with carbon retention screens

The evaluation of agitated tank leaching verses CIP and CIL circuits is not as complex as the heap leach-agitated tank leach analysis. CIP and CIL circuits generally have lower capital and operating costs for gold ore bodies than agitated tank leach circuits. Silver ore bodies show better economics with agitated tank leach-Merrill Crowe circuits. This is because the volume of carbon that would have to be processed to recover economic levels of silver would increase the capital and operating cost of a CIP or CIL circuit above that of an agitated tank leaching/CCD/Merrill-Crowe circuit.

Counter-current leaching. leaching efficiency can be enhanced by the application of Le Chateliers principle. In summary, the lower the concentration of gold in solution, the greater the driving force for gold dissolution to occur, although in a mass transport controlled reaction it is debatable what role this plays in gold leaching. An alternative explanation for this phenomenon is the reversible adsorption of Au(I) cyanide onto ore constituents. The gold adsorption is reversed when the solution is exchanged for a lower-grade solution or when a material (such as activated carbon or suitable ion exchange resin) is introduced into the slurry, which actively competes for the Au(I) cyanide species. This effect can be exploited in practice by performing intermediate solid-liquid separation steps during leaching to remove high-grade gold solutions, and re-diluting the solids in the remaining slurry with lower-grade leach solution and/or with freshwater plusreagents. Successful applications of this principle have been used at the Pinson and Chimney Creek, Nevada (United States), and East Driefontein (South Africa) plants, and at other operations.

At many operating gold plants, an increase in gold dissolution is observed when a leach slurry is transferred from one type of process equipment to another (i.e., between leach tanks, thickeners, filters, pumps, and pipelines). This is explained by the different mixing mechanisms in the different equipment, coupled with other factors, such as changes in slurry percent solids, changes in solution composition, and the effects of pumping transfer (i.e., plug flow mixing).

Likewise, the benefits of the carbon-in-leach (CIL) process compared with leaching and carbon-in-pulp (CIP) have been clearly demonstrated both experimentally and in practice, even without the presence of interfering preg-robbing constituents in the ore. The CIL process results in improved conditions for gold dissolution as a result of the lower gold tenor, albeit at a cost of lower gold-on-carbon loading.

The process technology and equipment design are described in detail for the carbon-in-pulp process. A typical process flowsheet is given with a description of appropriate design criteria. Technical advantages and disadvantages as compared to the traditional countercurrent decantation process are discussed including some illustrative comparisons of capital and operating costs.

In the carbon-in-pulp process activated carbon is mixed with a ground ore plus water slurry in which gold and silver cyanides are dissolved. After the precious metals are adsorbed onto the carbon, the loaded carbon is separated from the pulp and stripped. The barren pulp is disposed of as tailings and the precious metals are recovered from the strip solution by electrowinning or zinc precipitation.

The carbon-in-pulp process is used to treat low grade gold and/or silver ores. The ore is first ground in a ball mill which operates in closed circuit with a cyclone or similar sizing device. This is done to produce a feed suitably sized so that subsequent leaching is rapid.

The ground ore overflowing the sizing device generally runs at 25 to 35 percent solids. First it is passed through a trash screen to remove tramp oversize, plastics, wood, and other debris. It is then thickened to a requisite 40-50 percent solids prior to leaching. This range of pulp density keeps the activated carbon suspended in the pulp and is suitable for the subsequent leaching operation.

Following leaching, the pulp flows into the carbon-in-pulp circuit which operates in counter-current fashion. Usually five stages of adsorption are employed. Traditionally, 6 by 16 mesh activated carbon is added to the number 5 carbon-in-pulp tank and advanced to the number 4 tank and so on by air lift. The pulp is advanced from the number 1 tank to number 1 tank and so on by a second series of air lifts.

One of the most important factors in the carbon-in-pulp process is the minimization of gold losses on fine carbon reporting to the tailings. To date, the most abrasion resistant plus surface-active carbon has been found to be coconut shell carbon. Normally, the carbon consumption will average between 0.1-0.02 kg carbon per tonne of ore feed.

The traditional process for gold recovery from cyanide leach liquors has been the countercurrent decantation process. Following leaching, countercurrent decantation takes place in a series of thickeners in which the leach pulp is washed by the countercurrent flow of barren solution. The classified pregnant solution is treated for gold recovery with zinc dust. The precipitate may be acid digested. It is then smelted into bullion bars. The barren solution from zinc precipitation is returned to the last thickener.

The most well known carbon-in-pulp plant remains the prototype Homestake plant in Lead, South Dakota. Operating since 1973, this facility treats 2130 tonnes of ore per day averaging 2.7 g gold per tonne. Homestake has also operated small silver carbon-in-pulp plants at Creede and Cripple Creek, Colorado since 1979.

carbon in pulp

Gold Carbon-in-pulp (CIP) production 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.

CIPprocess is suitable for the treatment of oxidized gold ore with low sulfur content and mud content. It is unsuitable for the gold ore with high grade silveras well. Generally, the proportion of gold and silver should not exceed 1:5. The best conditions for CIPprocess in China: PH=10-12, sodium cyanide concentration is not less than 0.015%, the particle size of activated carbon is 1.0-3.35mm, the best choiceof carbon is coconut shell activated carbon, and the slurry concentration is 40-45%.

There are several desorption methods. In China, the general application methods are Zadra desorption method, high temperature, and high-pressure desorption method (hereinafter referred to as HTHP method) and integral pressure desorption method (hereinafter referred to as IP method).

Mining Equipment Manufacturers, Our Main Products: Gold Trommel, Gold Wash Plant, Dense Media Separation System, CIP, CIL, Ball Mill, Trommel Scrubber, Shaker Table, Jig Concentrator, Spiral Separator, Slurry Pump, Trommel Screen.

gold cip processing,gold cip plant,gold cip production line-beijing hot mining tech co ltd

CIP(Carbon in pulp) process is a high efficient method to leaching and recovering gold from gold ore, The most different from CIL process is in CIP process, gold leaching and adsorption are separated, first leaching, and then adsorption. Now it is being replacing by CIL process progressively. But it still have a lot of application.

CIPprocess is suitable for the treatment of oxidized gold ore with low sulfur content and mud content. It is unsuitable for the gold ore with high grade silveras well. Generally, the proportion of gold and silver should not exceed 1:5. The best conditions for CIPprocess in China: PH=10-12, sodium cyanide concentration is not less than 0.015%, the particle size of activated carbon is 1.0-3.35mm, the best choiceof carbon is coconut shell activated carbon, and the slurry concentration is 40-45%.

Usually,small or medium scale mineral processing plants can meet the requirements after two stages of crushing and one stage of screening. However, large scale mineral processingplants need three or even four stages of crushing to get qualified products.

In the classical process, the grate ball mill and the spiral classifier constitute the first stage grinding and classification unit, and the overflow ball mill and the hydro-cyclone constitute the second stage grinding and grading unit.

The overflow slurry of classification is only 18-25%, if directly leaching will result in excessive energy cost and reagent consumption. Therefore, thickening is a necessary step. In order to accelerate the settlement, a certain amount of flocculants will be added to enhance the thickening effect.

After the slurry went into the leaching tank, the solution of sodium cyanide is added into the first leaching tank accurately. Every stage of tank has a certain height difference, which can let the slurry flow automatically to the next tank.

Activated carbon is put into the the slurry at the last adsorption tank, and it is flowed reversely through the air lifter. Carbon segregation screen is set in every absorption tank's outlet to separate the carbon and slurry. After screening and washing, the gold-loaded activated carbon will be sent to the desorption operation. After absorption, the gold grade in the tailing solution will reduce to 0.01-0.03g/m.

Gold-loaded carbon and slurry are lifted by carbon pump or air-lifter to separation sieve (the most popular sieve is liner vibrating sieve). Gold-loaded carbon and slurry are separated by water on the sieve surface, and then gold-loaded carbon is sent to carbon storage tank and the slurry and water flow into the first absorption tank.

There are several desorption methods. In China, the general application methods are Zadra desorption method, high temperature and high pressure desorption method (hereinafter referred to as HTHP method) and integral pressure desorption method (hereinafter referred to as IP method).

coal washing plant,coal washery,coal washing-beijing hot mining tech co ltd

The major engineers havedelivered over 100 major coal washing projects. Especially, the major founders has designed and delivered about 400 million ton washing capacity in China, which accounts for10%of the total coal mining capacity (China).

Currently, HOT has already had presence in Australia. In 2013, HOT is employed by Caledon Coal Pty Ltd, and provides engineering consulting and sourcing services for the upgrade CHPP project successfully (COOK Colliery Coal Washing Plant, The capacity of Phase 1 is 3.5 MTPA).

Our end to end solutions are proven to lower capital and operating costs, save construction time and improve plant efficiencies. We ensure that our coal processing solutions are tailored to your specific needs.

Coal Washing Plantsconsist of several sub-processing modules including raw coal preparation (crushing and screening station), pre-discharge rejects (rom jig, dense medium vessel/bath, rotary breaker), coal feedingand washing module (jigging ordensemedium cyclones) as well as a dewatering module, coal handling module (conveyors, train/truck loading station, stacker reclaimer).

Great variety of design techniques, meeting the requirements of multiple products, covering all advanced coal preparation techniques, such as coarse coal bath heavy medium separation, heavy medium cyclone fine coal separation, coarse slurry separation and fine slurry flotation, etc.

HOT Miningprovides high quality equipment for coal washing plants, such as crushers, vibrating screens, vibrating feeders, coal centrifuge, teetered bed slurry separator (TBS),dense mediumcyclone, hydrocyclone, dense medium vessel/bath, jigger, Flotation Machine, Spiral Chute, etc.

Banana Vibrating Screen Horizontal Vibrating Centrifuge Double Rollor Crusher Screen Bowl Centrifuge TBS Hydrocyclone Spiral Chute Sieve Bend Screen

how to differentiate gold cip & cil production line?

Metal recovery or concentration by adsorption on activated carbon has been the dominant process for gold extraction after leaching by cyanide in aerated alkaline slurry. The continuous processes of gold recovery by adsorption on activated carbon in agitated tanks, namely the carbon-in-pulp (CIP) and the carbon-in-leach (CIL) processes, have been widely used since the 1970s.

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. Gold absorbs on to the activated carbon, which flows counter-current to the pulp, while screens separate the barren pulp from the gold-loaded 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. Simultaneous leaching and absorption help minimize the problem.

In the CIL (Carbon in Leach) or CIP (Carbon in Pulp) plants while the precious metals are being dissolved by the cyanide solution in the large volume tanks the dissolved metals are adsorbed by the active carbon. These processes are generally preferred for the relatively high grade and lower reserve ore types with very fine graded precious metals.

The major difference between the CIL and CIP processes is; during the CIL process both cyanide leaching and carbon adsorption take place in the same tanks but in the CIP process first leaching occurs in the first couple of tanks then carbon adsorption take place in the following tanks while leaching continues. In all of these tanks agitation and air sparging is available.

gold flotation production line,gold flotation plant,gold flotation technology-beijing hot mining tech co ltd

The flotation method is a widely used technique for the recovery of gold from gold-containing copper ores, base metal ores, copper-nickel ores, platinum group ores and many other ores where other processes are not applicable. Flotation is also used for the removal of interfering impurities before hydrometallurgical treatment, for upgrading of low sulfide and refractory ores for further treatment. Flotation is considered to be the most cost-effective method for concentrating gold.

In this process of rock minerals that have been taken from the mine site and then destroyed by the machine to obtain a fine grain of sand to free metal-containing granules for further processing. In the destruction of mineral rocks of machine tools can use a stone crusher machine, so the minimum size of rock minerals can reach between 28 mesh.

At this stage after a mineral ore that is refined inserted into the machine agitator tank which is usually also called a flotation cell to produce a pulp slurry concentrate.Distilled water provision inserted into the flotation cell flotation machine is then run, examined the amount of initial pH and initial temperature. In the flotation tank, stirring with impellers, which are intended to produce turbulent motion of fluids (pulp), so that when inserted air flow will form air bubbles.In the pulp is then coupled collector-1,-2 collector and frother; flotation machine run back to the time varying adjustment, and examined the amount of the final pH and final temperature.

In the process flotation reagent which in use is a form of lime, bubble and collectors. Froth forming a bubble that is stable and that float to the surface as a froth flotation cell. Collector reagents react with the surface of the precious metal sulfide mineral particles making the surface is water repellent. surface of the mineral-bound water molecule is released and will be changed to hydrophobic.

Thus the collector end of the hydrophobic molecules will be bound hydrophobic molecules from the bubble, so the mineral ore can be adrift. Collector has a molecular structure similar to the detergent hydrophobic sulfide mineral grains are attached to the air bubbles that rise from the slurry zone into the froth that floats on the surface of cells.

In the flotation process of air bubbles formed initially has small size and some are attached to the surface of mineral particles. Furthermore, another air bubble formed next to join the existing air bubbles and form air bubbles with a larger size, so as to have sufficient lift to lift mineral particles to the surface. The mechanism of attachment of mineral particles in the air bubbles inside the tank during the flotation process flotation occurs when the hydrodynamic forces and the forces of interaction between mineral particles with air bubbles, resulting in collisions with air bubbles and mineral particles occurs attachment of mineral particles with air bubbles.

From the results ofbubblefrothflotation processthat resembles acolored foam detergent concentrate metallic orescarryinggold-coppermineral-ladenis thenuptothe tubshelter, and foam concentrate that has been lifted from the drain into the upper lip and into the trough flotation machine is in use as a valuable mineral collection.

In order fortheflotationprocesscan take placebyeithermeansof attachmentof particlestoairbubbleslasteduntilthetop edge of theflotationcell,it is necessary toconsiderthe followingmatters :