Carbon In Pulp Tank Design

Carbon-in-Pulp or Carbon-in-Leach processes. The purpose is to describe in simple terms what activated carbon is all about and how it adsorbs gold. The understanding of the mechanism of gold adsorption is important because the CIP/CIL processes work as a result of the gold adsorption mechanism, which is a chemical occurrence. Factors that

Carbon in Pulp (CIP) Vs Carbon in Leach (CIL) Vs ... It is the sequential leach and 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 the solution. ... The design of CIP/CIL/CIC is closely related to the design of agitated leach ...

activated carbon on adsorption of aurocyanide was investigated by characterization of activated carbons that were synthesized or oxidized under various conditions.

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 pumps (P).

The adsorption tanks are typically a quarter to a tenth of the size of the leach tanks. The CIL and CIP modes of operations occur in a number of tanks placed in series. Pulp flows continuously from the first tank to the last, while carbon is …

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

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.

This operation takes place in five circular tanks that provide a total pulp retention time of 5.5 hours. The carbon advances countercurrently to the pulp. The carbon is maintained in suspension in the pulp by an internal air-lift and mechanical agitation of the pulp, either with rakes or with axial flow propellers.

With carbon-in-pulp, the ore is finely ground and the gold is solubilised using a cyanide leach in a series of tanks. The granular activated carbon is added to the leached slurry, where the carbon adsorbs the gold from the slurry solution and is then removed from the slurry by coarse screening. Often a series of five or six agitated tanks are ...

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 ...

Carbon-in-leach (CIL) & Carbon-in-pulp (CIP) processes utilize activated carbon to absorb solubilized gold for recovery. However, due to carbon ... product design and process expertise. Added digital features like advanced process control ... • Agitator and tank-top CIL EQ support + walking platform • OKTOP® CIL reactor plant unit core ...

While the ore and liquid flow is continuous through the circuit from tank 1 to tank 6, carbon is transferred counter-currently (from tank 6 to tank 1) in a semi batch mode. The carbon transfer cycle is 12 h with a loading time of 30 min. Fig. 5 shows the dynamic behavior of gold loading on carbon for in different tanks.

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 …

LAPPEENRANTA UNIVERSITY OF TECHNOLOGY Faculty of Technology Degree Programme of Chemical and Process Engineering MODELING OF GOLD CYANIDATION by Waroonkarn Srithammavut

batch within each contactor and rotating the pulp feed and discharge positions. The pulp feed and tailings discharge positions are rotated in such a manner that the counter current movement of carbon relative to pulp is achieved without physically having to pump carbon through the circuit.

The efficient design of carbon-in-pulp (C.I.P.) plants involves the integration of both process engineering and design engineering._x000D_ Many recently constructed plants have not recognised the above interrelationship, and as such have incurred higher capital and operating costs than were in reality necessary._x000D_ This has been compounded in some cases by …

stirred tanks. Freshly activated carbon, with a much larger particle size than the ore, is introduced into the final tank. Typically the carbon is retained in any tank by suitable screens and is intermittently progressed up the bank by some type of gentle pumping system and is finally removed from the slurry for desorption of the values.

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 …

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 …

Similarly, carbon concentrations in each tank are determined by manually sampling a volume of pulp, screening out the carbon, measuring the volume of carbon with a measuring cylinder, and converting this volume to a concentration (g/L) by assuming a density factor (typically 0.5 g/mL).

Estimating process design gold extraction, leach residence time ... also consumes cyanide, so its effect has to be accounted for in the case of carbon-in-leach (CIL) or carbon-in-pulp &,3 SODQW ÀRZVKHHWV 6LQFH FDQLGH LV DQ H[SHQVLYH UHDJHQW RIWHQ D PDMRU FRPSRQHQW RI SODQW RSHUDWLQJ FRVWV LW LV ... CIP or CIL tanks operated …

The carbon-in-leach process integrates leaching and carbon-in-pulp into a single unit process operation in which the leach tanks are fitted with carbon retention screens and the carbon-in-pulp tanks are eliminated. The activated carbon is added in leach, with gold adsorption occurring nearly simultaneously with gold dissolution by the cyanide ...

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.

In the CIP process, activated carbon is used to adsorb the gold directly from the cyanided pulp in a series of large adsorption tanks. Pulp flows continually from the first vessel to the last in the series, and the carbon is …

The adsorption tanks are typically a quarter to a tenth of the size of the leach tanks. The CIL and CIP modes of operations occur in a number of tanks placed in series. Pulp flows continuously from the first tank to the last, while carbon is pumped counter current from the last tank to the first.

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 industry has attributes that …

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 ...

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, …

Semantic Scholar extracted view of "The process design of gold leaching and carbon-in-pulp circuits" by W. Stange. Skip to search form Skip to main ... Carbon-in-leach and carbon-in …

The peripheral screen system uses 8 screen panels per tank, curved to the radius of the adsorption tank. These panels are fixed vertically to the top frame of the tank providing about 90% screen area for overflow.