Gold Carbon-in-pulp (CIP) Process
The same as the conventional cyanidation method, generally 5-8 mixing tanks. Carbon adsorption The cyanide pulp enters the stirring adsorption tank (carbon slurry tank). Add carbon to the leaching tank, and the carbon adsorbs the gold in the pulp to become gold-loaded carbon. ... We provide ore process design, mining equipment production, and ...
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Modeling and optimization of Carbon in leach (CIL) circuit …
CIL circuit is a process of continuous leaching of gold from ore to liquid and counter-current adsorption of gold from liquid to carbon particles in a series of tanks. The CIL …
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Carbon-in-pulp
This chapter focuses on the advances made in the design and operation of carbon-in-pulp (CIP) and carbon-in-leach (CIL) plants. Most of the advances over the last few years …
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The process design of gold leaching and carbon-in-pulp …
Assuming that a gold ore has been effectively ground to ensure maximum economic liberation of gold, the circuits that will have the most effect on the successful operation of a gold plant will …
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Carbon In Pulp Interstage Screening using Submerged …
Carbon recycled off the screen must traverse the entire tank height before returning to the inter-stage screen. As depicted in Figure 4, this flow pattern minimizes both carbon and slurry short circuiting while simultaneously eliminating localized high carbon concentrations near the screening device. Engineering and Design
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Estimation of gold inventory in large carbon in leach tanks
Covered are the processes of cyanidation and alternative solvents for leaching gold and silver ores, heap and vat leaching, carbon-in-pulp (CID), the technology of carbon adsorption and desorption ...
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Estimation of gold inventory in large carbon in leach tanks
Then reactivated carbon is added into tank 8. During a transfer the concentration of carbon in a tank may drop from 15 to 11 g/L. The carbon transfer is carried out by pumps with intake submerged 0.3–0.4 m below the surface. The mixing in the tank may push some carbon from the bottom of the tank to the surface producing possible variation of ...
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THE CHEMISTRY OF THE CARBON-IN--PULP PROCESS …
Carbon - An Historical Perspective 1 1.2 The Carbon-in-pulp Process - Process Chemistry and Unknown Areas 3 a; Leaching of Gold from the Ore 3 b) Adsorption of Aurocyanide onto Activated Carbon l c) Carbon Acid Washing and Elution 7 d) Gold Electrot'inning or Precipitation 8 e) Carbon Reactivation 8 f) Other Features of the CIP Process 9
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Gold CIL & CIP Gold Leaching Process Explained CCD
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 …
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ACTIVATED CARBON IN GOLD RECOVERY
Activated carbon is an adsorbent that increases the concentration of gold in the solution phase. For example, an ore containing 3 g/t is leached, mixed with carbon, which loads to 3 000 g/t, a …
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Modelling and simulation of the carbon-in-pulp gold …
A steady-state simulator for CIP/CIL circuits has been developed. The simulator is based on a model of a single CIL tank. This model combines descriptions of the kinetics of leaching, the kinetics of adsorption, and the residence time behaviour of the pulp solids, leach liquor and carbon. This work was part of a co-operative research project between the Julius Kruttschnitt …
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The process design of gold leaching and carbon …
Carbon-in-leach and carbon-in-pulp are continuous processes that use activated carbon in a cascade of large agitated tanks, which have been widely used to recover or concentrate precious metals in …
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Carbon in Pulp | Gold CIP
Carbon in the Pulp CIP Plant Consists of the Following Steps: 1. Crushing and Screening After the crushing and screening by the crusher and vibrating screen, the bulk ore （up to 650 mm） can be broken into small sizes （about 10 mm or even smaller). Usually, small or medium-scale mineral processing plants can meet the requirements after two crushing stages and one …
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Gold Carbon-in-pulp (CIP) Process
The gold CIP process includes seven operation stages: preparation of leaching pulp, cyanide leaching, carbon adsorption, gold-loaded carbon desorption, electrolysis to obtain muddy gold, de-gold carbon recycling, and treatment of …
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International Journal of Progressive Sciences and …
The amount of carbon in each 392 m3 carbon in pulp tank is the main determining factor for gold extraction efficiency. Each tank requires up to 12 tonnes of carbon and 5 ppm dissolved oxygen to concentrate 93 – 96 % of soluble gold at 95 % carbon activity rate, achieving up to 10,000 ppm gold-cyanide in feed and 0.001 ppm in tails solution.
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How to design a CIP or CIL gold processing plant – ZJH …
1.Understanding the concept of CIP or CIL gold processing plant. CIP (carbon in pulp): after you leaching the gold ore pulp in the leaching tank by cyanide, then feeding the leached ore pulp into the adsorption tank for adsorp the gold by active carbon. CIL (carbon in leach) : feeding the ore pulp in to the leaching-adsorption tank, then leaching and adsorp the gold at same time at the ...
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Carbon-in-pulp
This chapter focuses on the advances made in the design and operation of carbon-in-pulp (CIP) and carbon-in-leach (CIL) plants. Most of the advances over the last few years have been in the area of carbon management. Trends towards cyanide-free elution are becoming more prevalent, impacting positively on operating costs.
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CIP/CIL Modelling
The SGS carbon-in-pulp (CIP) / carbon-in-leach (CIL) modelling packaged is used to: Estimate the performance of a full-scale CIP and CIL plant. Derive the optimum design criteria based …
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The West Driefontein reclamation carbon-in-pulp plant; …
The full-scale six-stage carbon-in-pulp (CIP) plant was commissioned on the 22nd of November 1996. The CIP plant comprises two 12 m2 Delkor linear screens, six 80 m3 AAC pump-cells, …
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THE CARBON-IN-PULP TANK. | 3D CAD Model …
The Computer-Aided Design ("CAD") files and all associated content posted to this website are created, uploaded, managed and owned by third-party users. ... activated carbon is used to adsorb the gold directly from …
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The process design of gold leaching and carbon-in …
The process design of gold leaching and carbon-in-pulp circuits contaminants. These are removed by thermal regeneration of the eluted carbon, typically in a rotary kiln at temperatures of 650–750°C. Regeneration is carried out in a steam atmosphere to minimize carbon degradation due to oxidation. The eluted and regenerated carbon is screened ...
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Cleaning Carbon Tanks In Carbon in Leach And …
In short, the problem of carbon degradation makes closed or semi-open impellers poor selections for carbon tank cleanout applications. On the other hand, an impeller design commonly used in the pulp and paper …
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Factors influencing the rate of gold cyanide leaching and adsorption …
The unique Pumpcell pulp screening mechanisms can operate at much higher carbon concentrations (up to 100 g/L), which has allowed the size of the Pumpcell CIP adsorption tanks to be reduced by a factor of at least three and pulp residence times reduced to 15–20 min/stage, compared to conventional CIP tanks, which have a residence time of 1 h ...
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Dynamic Modelling of a Carbon-in-leach Gold Processing …
ENGLISH SUMMARY: Carbon-in-pulp (CIP) and carbon-in-leach (CIL) circuits have been the primary methods used for treating gold ores for many years. Although inherently robust processes, there is still often much room for optimisation to improve gold extraction efficiencies and to reduce reagent consumption and operating costs. A number of models for leaching and …
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ACTIVATED CARBON IN GOLD RECOVERY
•Carbon-In-Pulp / Carbon-In-Leach. •Circuit and activity profiles. •Sampling, Sample Preparation and ... arrangement of tanks. 54. CIL tanks with pumping screens. 55. Vibrating screen. 56. Apertures of Screens Option 1 Option 2 Carbon size Mesh ASM 6 …
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Dynamic Modelling of a Carbon-in-leach Gold …
Carbon-in-pulp (CIP) and carbon-in-leach (CIL) circuits have been the primary methods used for treating gold ores for many years. Although inherently robust processes, there is still often much room for optimisation to improve gold extraction efficiencies and to reduce reagent consumption and operating costs.
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Factors influencing the rate of gold cyanide leaching and …
The unique Pumpcell pulp screening mechanisms can operate at much higher carbon concentrations (up to 100 g/L), which has allowed the size of the Pumpcell CIP adsorption tanks to be reduced by a factor of at least three and pulp residence times reduced to 15–20 min/stage, compared to conventional CIP tanks, which have a residence time of 1 h ...
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OneMine | Mechanical Agitation in the Carbon-in-Pulp …
Mechanical agitation is the preferred system for Carbon-in-Pulp processes. Agitator design requires an understanding of the relationships between energy, shear and flow and the nature of shear rates and shear stress distribution in an agitated tank. Laser techniques are useful when studying these phenomena. The alternatives are open impeller agitation or draft tube circulation.
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v117n8a13 Gold CIP and CIL process optimization in a …
Since the carbon is modelled as a continuous flow (Equation [2]), the model predicts the carbon loading just prior to elution or a carbon transfer. With one elution per day, the carbon residence time for the model is therefore taken as 24 hours. An example of the plant carbon loadings in each tank for the period 1–5 December 2015 compared to ...
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(PDF) Dynamic simulation of the carbon-in-pulp and carbon …
Activate d carbon fl ow To elution S Pulp from the leaching circuit New activated carbon P IS To tillings disposal Activated carbon Ore Pulp flo w Figure 1: Schematic diagram of a carbon-in-pulp or carbon-in-leach plant with three tanks, showing the interstate screens (IS), the screen at the exit of the first tank (S), and the carbon transfer ...
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