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Cyanide from mine threatens Guyana river The

Cyanide is used to extract gold from ore. Afterwards, the highly poisonous residue had been stored in a "reservoir" at the Omai gold mine, 100 miles south-west of the capital, Georgetown, ever ...Cyanide is used to extract gold from ore. Afterwards, the highly poisonous residue had been stored in a "reservoir" at the Omai gold mine, 100 miles south-west of the capital, Georgetown, ever ...

Gold cyanidation - Wikipedia

Gold cyanidation (also known as the cyanide process or the MacArthur-Forrest process) is a hydrometallurgical technique for extracting gold from low-grade ore by converting the gold to a water-soluble coordination complex. It is the most commonly used leaching process for gold extraction. Production of reagentsfor mineral processing to recover gold, copper, zinc and silver represents approximately 13% of cyanide consumption globally, with the remaining 87% of cyanide used in other iGold cyanidation (also known as the cyanide process or the MacArthur-Forrest process) is a hydrometallurgical technique for extracting gold from low-grade ore by converting the gold to a water-soluble coordination complex. It is the most commonly used leaching process for gold extraction. Production of reagentsfor mineral processing to recover gold, copper, zinc and silver represents approximately 13% of cyanide consumption globally, with the remaining 87% of cyanide used in other i

Wounding Guyana: Gold Mining and Environmental Degradation

regarding the regulation of the gold mining sector. Gold mining activities in Guy ana have caused waste pollution, river contamination through cyanide and mercury use, soil erosion, deforestation, and destruction of wildlife. The government of Guyana is cognizant of these environmental malaises, but its weak capacity andregarding the regulation of the gold mining sector. Gold mining activities in Guy ana have caused waste pollution, river contamination through cyanide and mercury use, soil erosion, deforestation, and destruction of wildlife. The government of Guyana is cognizant of these environmental malaises, but its weak capacity and

cyanide used in gold processing in guyana

cyanide used in gold processing in guyana. Sbm Xj58 Series Best Gold Refining Machine,Gold Machine Buy . There are also other gold ore mining equipments used to mine and crush gold ores. Vibrating feeder is used to feed gold ore evenly to the crushing machine. SBM offer GZD and ZSW model vibrating feeder for gold mining plant.Vibrating screen is the screening machine that is used to cyanide used in gold processing in guyana. Sbm Xj58 Series Best Gold Refining Machine,Gold Machine Buy . There are also other gold ore mining equipments used to mine and crush gold ores. Vibrating feeder is used to feed gold ore evenly to the crushing machine. SBM offer GZD and ZSW model vibrating feeder for gold mining plant.Vibrating screen is the screening machine that is used to

How is Sodium Cyanide Consumed during Gold

21/08/2020  At 130°C, it loses 85%. In the gold cyanidation process, hydrocyanic acid is a highly toxic gas. If it is not processed, it will increase the amount of NaCN and increase the production cost, and it will pollute the environment and damage the health of the operators. But the amount of HCN produced varies with the pH of the solution.21/08/2020  At 130°C, it loses 85%. In the gold cyanidation process, hydrocyanic acid is a highly toxic gas. If it is not processed, it will increase the amount of NaCN and increase the production cost, and it will pollute the environment and damage the health of the operators. But the amount of HCN produced varies with the pH of the solution.

Gold Cyanidation Process - 911 Metallurgist

12/08/2015  A common Cyanidation Process for Gold or called CIL and CIP. The amount of these two reagents in the slurry is very important, without enough cyanide to consume all of the valuable mineral there will be losses. Without enough lime a condition may developed that could potentially be very hazardous to the workers well-being.12/08/2015  A common Cyanidation Process for Gold or called CIL and CIP. The amount of these two reagents in the slurry is very important, without enough cyanide to consume all of the valuable mineral there will be losses. Without enough lime a condition may developed that could potentially be very hazardous to the workers well-being.

How gold is extracted by Cyanidation Process - Refresh

17/06/2020  Gold and silver are both extracted from the mines using the cyanidation process. This process is achieved by dissolving gold or silver in either a potassium cyanide or sodium cyanide solution. Mining companies also incorporate the use of a technical extraction process in the extraction of gold. Larger pieces are broken down into much smaller pieces. The removal of silver from its ores also uses the sodium cyanide process, just like gold.17/06/2020  Gold and silver are both extracted from the mines using the cyanidation process. This process is achieved by dissolving gold or silver in either a potassium cyanide or sodium cyanide solution. Mining companies also incorporate the use of a technical extraction process in the extraction of gold. Larger pieces are broken down into much smaller pieces. The removal of silver from its ores also uses the sodium cyanide process, just like gold.

Sodium Cyanide - Orica

Gold Extraction Process Sod ium cyanide has been used in the extraction of gold from ore for over a century. Today it is still considered the most efficient extraction method – with sodium cyanide used in the leaching process in most gold mining operations. Orica is one of the largest producers of sodium cyanide for the mining industry.Gold Extraction Process Sod ium cyanide has been used in the extraction of gold from ore for over a century. Today it is still considered the most efficient extraction method – with sodium cyanide used in the leaching process in most gold mining operations. Orica is one of the largest producers of sodium cyanide for the mining industry.

Cyanide Amenability Studies of Gold Ores-The Use of Design ...

Gold cyanidation process, like any other process, is affected by several parameters such as pH, temperature, slurry density, particle size, oxygen, cyanide concentration, agitation and the presence of other minerals in the ore (Marsden and House, 2006, Heath and Rumball, 1998, Ellis and Senanayake,Gold cyanidation process, like any other process, is affected by several parameters such as pH, temperature, slurry density, particle size, oxygen, cyanide concentration, agitation and the presence of other minerals in the ore (Marsden and House, 2006, Heath and Rumball, 1998, Ellis and Senanayake,

Processing technologies for gold-telluride ores

ores. For the conventional cyanide leaching process, pretreatment such as oxidation is required to achieve high gold recovery. Roasting is a relatively simple but not environment-friendly method; bio-oxidation technology seems to be more suitable for the oxidation of flotation concentrate. Other treatment methods involve cyanide leaching, thiourea leaching, ammoniacal thiosulfate leaching, carbon-in ores. For the conventional cyanide leaching process, pretreatment such as oxidation is required to achieve high gold recovery. Roasting is a relatively simple but not environment-friendly method; bio-oxidation technology seems to be more suitable for the oxidation of flotation concentrate. Other treatment methods involve cyanide leaching, thiourea leaching, ammoniacal thiosulfate leaching, carbon-in

Cyanide from mine threatens Guyana river The

Cyanide is used to extract gold from ore. Afterwards, the highly poisonous residue had been stored in a "reservoir" at the Omai gold mine, 100 miles south-west of the capital, Georgetown, ever ...Cyanide is used to extract gold from ore. Afterwards, the highly poisonous residue had been stored in a "reservoir" at the Omai gold mine, 100 miles south-west of the capital, Georgetown, ever ...

cyanide used in gold processing in guyana

cyanide used in gold processing in guyana. Sbm Xj58 Series Best Gold Refining Machine,Gold Machine Buy . There are also other gold ore mining equipments used to mine and crush gold ores. Vibrating feeder is used to feed gold ore evenly to the crushing machine. SBM offer GZD and ZSW model vibrating feeder for gold mining plant.Vibrating screen is the screening machine that is used to cyanide used in gold processing in guyana. Sbm Xj58 Series Best Gold Refining Machine,Gold Machine Buy . There are also other gold ore mining equipments used to mine and crush gold ores. Vibrating feeder is used to feed gold ore evenly to the crushing machine. SBM offer GZD and ZSW model vibrating feeder for gold mining plant.Vibrating screen is the screening machine that is used to

Montagne d'Or project in French Guiana: economic ...

13/12/2019  In addition, no process has achieved the level of maturity or robustness of cyanide processes. The potential environmental impact of the reagents used in these alternative processes is usually less than that of cyanide. However, in order to compare the overall environmental impact of each option it would be necessary to assess the different processes as a whole (reagent and energy supply ...13/12/2019  In addition, no process has achieved the level of maturity or robustness of cyanide processes. The potential environmental impact of the reagents used in these alternative processes is usually less than that of cyanide. However, in order to compare the overall environmental impact of each option it would be necessary to assess the different processes as a whole (reagent and energy supply ...

How is Sodium Cyanide Consumed during Gold

21/08/2020  Sodium cyanide is the most commonly used leaching chemical in gold extraction process. According to theoretical calculation, leaching 1 gram of gold only requires 0.5 grams of sodium cyanide. However, in most gold cyanidation plants, the consumption of cyanide is high, which is 50-100 times higher than the theoretical calculation. So what are the main aspects of cyanide consumption in the21/08/2020  Sodium cyanide is the most commonly used leaching chemical in gold extraction process. According to theoretical calculation, leaching 1 gram of gold only requires 0.5 grams of sodium cyanide. However, in most gold cyanidation plants, the consumption of cyanide is high, which is 50-100 times higher than the theoretical calculation. So what are the main aspects of cyanide consumption in the

Extraction of gold using cyanide - NZQA

The process: The ore is ground and crushed and any free gold is extracted by use of gravity as it may be too large to react readily with the cyanide. If the gold ore contains other metals and/or sulphide minerals it may require additional treatments prior to the leaching process. The treated gold then has sodium cyanide added to it and the following reaction known as Elsener’s equation ...The process: The ore is ground and crushed and any free gold is extracted by use of gravity as it may be too large to react readily with the cyanide. If the gold ore contains other metals and/or sulphide minerals it may require additional treatments prior to the leaching process. The treated gold then has sodium cyanide added to it and the following reaction known as Elsener’s equation ...

Sodium Cyanide - Orica

Gold Extraction Process. Sod ium cyanide has been used in the extraction of gold from ore for over a century. Today it is still considered the most efficient extraction method – with sodium cyanide used in the leaching process in most gold mining operations. Orica is one of the largest producers of sodium cyanide for the mining industry. Ammonia and caustic soda are the key raw materials ...Gold Extraction Process. Sod ium cyanide has been used in the extraction of gold from ore for over a century. Today it is still considered the most efficient extraction method – with sodium cyanide used in the leaching process in most gold mining operations. Orica is one of the largest producers of sodium cyanide for the mining industry. Ammonia and caustic soda are the key raw materials ...

Cyanide Amenability Studies of Gold Ores-The Use of Design ...

Gold cyanidation process, like any other process, is affected by several parameters such as pH, temperature, slurry density, particle size, oxygen, cyanide concentration, agitation and the presence of other minerals in the ore (Marsden and House, 2006, Heath and Rumball, 1998, Ellis and Senanayake,Gold cyanidation process, like any other process, is affected by several parameters such as pH, temperature, slurry density, particle size, oxygen, cyanide concentration, agitation and the presence of other minerals in the ore (Marsden and House, 2006, Heath and Rumball, 1998, Ellis and Senanayake,

Extraction of gold using cyanide - NZQA

This process of dissolving the gold using cyanide is known as leaching. Sometimes some other precious metals can also be leached along wit. h the gold, for example silver. This process of leaching is done in leaching tanks or by heap leaching where sodium cyanide is dripped onto a heap of gold ore and left to percolate its way through the heap of gold ore. The dissolved gold in the form of the ...This process of dissolving the gold using cyanide is known as leaching. Sometimes some other precious metals can also be leached along wit. h the gold, for example silver. This process of leaching is done in leaching tanks or by heap leaching where sodium cyanide is dripped onto a heap of gold ore and left to percolate its way through the heap of gold ore. The dissolved gold in the form of the ...

Extracting gold without cyanide - Chemical Engineering ...

01/10/2018  Cyanide is used in more than 90% of global gold production, but producers are facing increasingly tough regulations restricting the use of cyanide due to environmental and health concerns. The CSIRO technology replaces cyanide with thiosulfate, a nontoxic, mobile-plant alternative. It is a simple vat-and-heap-leach process involving low capital cost. CSIRO gold processing team leader 01/10/2018  Cyanide is used in more than 90% of global gold production, but producers are facing increasingly tough regulations restricting the use of cyanide due to environmental and health concerns. The CSIRO technology replaces cyanide with thiosulfate, a nontoxic, mobile-plant alternative. It is a simple vat-and-heap-leach process involving low capital cost. CSIRO gold processing team leader

The leaching and adsorption behaviour of gold ores

the ore for aurocyanide in solution, although when no cyanide was present the kinetics of the two processes governed the distribution of gold between the ore and the carbon. Gold was found to reduce at the chalcopyrite surface and a mechanism for this reduction was proposed. For pyrite, a combination of reduction and physical adsorption was ...the ore for aurocyanide in solution, although when no cyanide was present the kinetics of the two processes governed the distribution of gold between the ore and the carbon. Gold was found to reduce at the chalcopyrite surface and a mechanism for this reduction was proposed. For pyrite, a combination of reduction and physical adsorption was ...

Cyanide from mine threatens Guyana river The

Cyanide is used to extract gold from ore. Afterwards, the highly poisonous residue had been stored in a "reservoir" at the Omai gold mine, 100 miles south-west of the capital, Georgetown, ever ...Cyanide is used to extract gold from ore. Afterwards, the highly poisonous residue had been stored in a "reservoir" at the Omai gold mine, 100 miles south-west of the capital, Georgetown, ever ...

Improved gold recovery expected with cyanide

23/08/2011  Guyana and Canada will cooperate to introduce cyanide leaching technology to improve gold recovery in the medium-scale mining sector here. An agreement23/08/2011  Guyana and Canada will cooperate to introduce cyanide leaching technology to improve gold recovery in the medium-scale mining sector here. An agreement

Gold_cyanidation - chemeurope

Gold cyanidation (also known as the cyanide process or the MacArthur-Forrest Process) is a metallurgical technique for extracting gold from low-grade ore by converting the gold to water soluble aurocyanide metallic complex ions. It is the most commonly used process for gold extraction.Due to the highly poisonous nature of cyanide, the process is highly controversial.Gold cyanidation (also known as the cyanide process or the MacArthur-Forrest Process) is a metallurgical technique for extracting gold from low-grade ore by converting the gold to water soluble aurocyanide metallic complex ions. It is the most commonly used process for gold extraction.Due to the highly poisonous nature of cyanide, the process is highly controversial.

Cyanide Amenability Studies of Gold Ores-The Use of Design ...

Gold cyanidation process, like any other process, is affected by several parameters such as pH, temperature, slurry density, particle size, oxygen, cyanide concentration, agitation and the presence of other minerals in the ore (Marsden and House, 2006, Heath and Rumball, 1998, Ellis and Senanayake,Gold cyanidation process, like any other process, is affected by several parameters such as pH, temperature, slurry density, particle size, oxygen, cyanide concentration, agitation and the presence of other minerals in the ore (Marsden and House, 2006, Heath and Rumball, 1998, Ellis and Senanayake,

CYANIDE AND CYANIDE COMPLEXES IN THE GOLD- MINE

separate gold and other metals from its ore. This process required finer milling and the tailings are piped to disposal sites called slimes dams (see process in Figure 1.2). The gold is dissolved according to the Elsner reaction: 2Au (s) + 4CN − + O 2(g) + 2H 2O(l) → 2Au(CN)2(aq) + 4OH − (Reaction 1.1) Today, cyanidation is the most used technique in the world for the processing of gold ...separate gold and other metals from its ore. This process required finer milling and the tailings are piped to disposal sites called slimes dams (see process in Figure 1.2). The gold is dissolved according to the Elsner reaction: 2Au (s) + 4CN − + O 2(g) + 2H 2O(l) → 2Au(CN)2(aq) + 4OH − (Reaction 1.1) Today, cyanidation is the most used technique in the world for the processing of gold ...

Extraction of gold using cyanide - NZQA

This process of dissolving the gold using cyanide is known as leaching. Sometimes some other precious metals can also be leached along wit. h the gold, for example silver. This process of leaching is done in leaching tanks or by heap leaching where sodium cyanide is dripped onto a heap of gold ore and left to percolate its way through the heap of gold ore. The dissolved gold in the form of the ...This process of dissolving the gold using cyanide is known as leaching. Sometimes some other precious metals can also be leached along wit. h the gold, for example silver. This process of leaching is done in leaching tanks or by heap leaching where sodium cyanide is dripped onto a heap of gold ore and left to percolate its way through the heap of gold ore. The dissolved gold in the form of the ...

ALTA MetBytes - What's Happening in Gold Ore Processing

Cyanide Alleviation . ReCYN Process . Green Gold Engineering has been awarded a ReCYN™ Process design and install contract with PT Agincourt Resources to detoxify tailings and recover cyanide and copper at its Martabe gold-silver operation in Sumatra, Indonesia (1). It will be the first application of the technology outside of the Mirah, IMK Group. Commissioning is due in October 2019. An ...Cyanide Alleviation . ReCYN Process . Green Gold Engineering has been awarded a ReCYN™ Process design and install contract with PT Agincourt Resources to detoxify tailings and recover cyanide and copper at its Martabe gold-silver operation in Sumatra, Indonesia (1). It will be the first application of the technology outside of the Mirah, IMK Group. Commissioning is due in October 2019. An ...

The leaching and adsorption behaviour of gold ores

the ore for aurocyanide in solution, although when no cyanide was present the kinetics of the two processes governed the distribution of gold between the ore and the carbon. Gold was found to reduce at the chalcopyrite surface and a mechanism for this reduction was proposed. For pyrite, a combination of reduction and physical adsorption was ...the ore for aurocyanide in solution, although when no cyanide was present the kinetics of the two processes governed the distribution of gold between the ore and the carbon. Gold was found to reduce at the chalcopyrite surface and a mechanism for this reduction was proposed. For pyrite, a combination of reduction and physical adsorption was ...

Cyanide Leaching Of Gold - Mine Engineer.Com

Once the gold has been dissolved in the cyanide, and the ore body has been reasonably depleted of its gold, there are two main processes for recovering the gold from the pregnant cyanide solution. One is the Merrill-Crowe zinc precipitation process and the other is the adsorption of the gold onto activated carbon. The oldest method, Merrill Crowe, involves first removing the oxygen from the ...Once the gold has been dissolved in the cyanide, and the ore body has been reasonably depleted of its gold, there are two main processes for recovering the gold from the pregnant cyanide solution. One is the Merrill-Crowe zinc precipitation process and the other is the adsorption of the gold onto activated carbon. The oldest method, Merrill Crowe, involves first removing the oxygen from the ...

CYANIDE RECOVERY COST EFFECTIVENESS IS WHY RECYCLE CYANIDE

cyanide destruction and cyanide recovery costs for a fairly generic high cyanide-consuming case. The capital cost of a cyanide recovery plant could pay back in less than 2 years in many cases, particularly when high cyanide consumption is associated with copper mineralisation in the ore. As a broad generalisation, cyanide recoverycyanide destruction and cyanide recovery costs for a fairly generic high cyanide-consuming case. The capital cost of a cyanide recovery plant could pay back in less than 2 years in many cases, particularly when high cyanide consumption is associated with copper mineralisation in the ore. As a broad generalisation, cyanide recovery

Improved gold recovery expected with cyanide

23/08/2011  Guyana and Canada will cooperate to introduce cyanide leaching technology to improve gold recovery in the medium-scale mining sector here. An agreement23/08/2011  Guyana and Canada will cooperate to introduce cyanide leaching technology to improve gold recovery in the medium-scale mining sector here. An agreement

Guyana Goldfields produced 151,600 Ozs gold last year ...

09/01/2017  A slurry is created with the cyanide in a process known as gold cyanidation. The gold dissolves in aqueous solutions of cyanide. In October 2014, Guyana Goldfields Head Patrick Sheridan at 09/01/2017  A slurry is created with the cyanide in a process known as gold cyanidation. The gold dissolves in aqueous solutions of cyanide. In October 2014, Guyana Goldfields Head Patrick Sheridan at

CYANIDE AND CYANIDE COMPLEXES IN THE GOLD- MINE

separate gold and other metals from its ore. This process required finer milling and the tailings are piped to disposal sites called slimes dams (see process in Figure 1.2). The gold is dissolved according to the Elsner reaction: 2Au (s) + 4CN − + O 2(g) + 2H 2O(l) → 2Au(CN)2(aq) + 4OH − (Reaction 1.1) Today, cyanidation is the most used technique in the world for the processing of gold ...separate gold and other metals from its ore. This process required finer milling and the tailings are piped to disposal sites called slimes dams (see process in Figure 1.2). The gold is dissolved according to the Elsner reaction: 2Au (s) + 4CN − + O 2(g) + 2H 2O(l) → 2Au(CN)2(aq) + 4OH − (Reaction 1.1) Today, cyanidation is the most used technique in the world for the processing of gold ...

gold silver separation process in guyana

gold mining techniques in guyana. ... Process Introduction Magnetic separation places the leading position in iron ore separation. Fo ... Gold, silver, diamond, ... Inquire Now ; Amalgam (chemistry) Wikipedia. Mercury has been used in gold and silver mining because of the convenience and the ease with ... including pan amalgamation and the Washoe process. Gold amalgam ... Important amalgams ...gold mining techniques in guyana. ... Process Introduction Magnetic separation places the leading position in iron ore separation. Fo ... Gold, silver, diamond, ... Inquire Now ; Amalgam (chemistry) Wikipedia. Mercury has been used in gold and silver mining because of the convenience and the ease with ... including pan amalgamation and the Washoe process. Gold amalgam ... Important amalgams ...

ALTA MetBytes - What's Happening in Gold Ore Processing

Cyanide Alleviation . ReCYN Process . Green Gold Engineering has been awarded a ReCYN™ Process design and install contract with PT Agincourt Resources to detoxify tailings and recover cyanide and copper at its Martabe gold-silver operation in Sumatra, Indonesia (1). It will be the first application of the technology outside of the Mirah, IMK Group. Commissioning is due in October 2019. An ...Cyanide Alleviation . ReCYN Process . Green Gold Engineering has been awarded a ReCYN™ Process design and install contract with PT Agincourt Resources to detoxify tailings and recover cyanide and copper at its Martabe gold-silver operation in Sumatra, Indonesia (1). It will be the first application of the technology outside of the Mirah, IMK Group. Commissioning is due in October 2019. An ...

Extraction of gold using cyanide - NZQA

This process of dissolving the gold using cyanide is known as leaching. Sometimes some other precious metals can also be leached along wit. h the gold, for example silver. This process of leaching is done in leaching tanks or by heap leaching where sodium cyanide is dripped onto a heap of gold ore and left to percolate its way through the heap of gold ore. The dissolved gold in the form of the ...This process of dissolving the gold using cyanide is known as leaching. Sometimes some other precious metals can also be leached along wit. h the gold, for example silver. This process of leaching is done in leaching tanks or by heap leaching where sodium cyanide is dripped onto a heap of gold ore and left to percolate its way through the heap of gold ore. The dissolved gold in the form of the ...

cyanide process Infoplease

cyanide process or cyanidation, method for extracting gold from its ore. The ore is first finely ground and may be concentrated by flotation; if it contains certain impurities, it may be roasted. It is then mixed with a dilute solution of sodium cyanide (or potassium or calcium cyanide) while air is bubbled through it. The gold is oxidized and forms the soluble aurocyanide complex ion, Au(CN ...cyanide process or cyanidation, method for extracting gold from its ore. The ore is first finely ground and may be concentrated by flotation; if it contains certain impurities, it may be roasted. It is then mixed with a dilute solution of sodium cyanide (or potassium or calcium cyanide) while air is bubbled through it. The gold is oxidized and forms the soluble aurocyanide complex ion, Au(CN ...

Gold Mining Reinvented: Maximizing gold recovery while ...

19/05/2020  The process involves treating the ore with an aqueous solution of sodium cyanide. About 90% of today’s gold production involves the use of cyanide, making gold cyanidation one of the most ...19/05/2020  The process involves treating the ore with an aqueous solution of sodium cyanide. About 90% of today’s gold production involves the use of cyanide, making gold cyanidation one of the most ...

ALTA Gold 2012 E-Doc - Home Albion Process

EVALUATING PROCESS OPTIONS FOR TREATING SOME REFRACTORY ORES By 1 ... Cyanide Recoverable gold Average gold and silver extraction reported in test work for both Ore A and B are illustrated in Figure 3. Direct cyanidation of Ore A yielded poor gold extractions in the mid twenty percentile for ore ground to a P 80 of 53 micrometres. Some test work investigated cyanidation of tails EVALUATING PROCESS OPTIONS FOR TREATING SOME REFRACTORY ORES By 1 ... Cyanide Recoverable gold Average gold and silver extraction reported in test work for both Ore A and B are illustrated in Figure 3. Direct cyanidation of Ore A yielded poor gold extractions in the mid twenty percentile for ore ground to a P 80 of 53 micrometres. Some test work investigated cyanidation of tails

CYANIDE RECOVERY COST EFFECTIVENESS IS WHY RECYCLE CYANIDE

cyanide destruction and cyanide recovery costs for a fairly generic high cyanide-consuming case. The capital cost of a cyanide recovery plant could pay back in less than 2 years in many cases, particularly when high cyanide consumption is associated with copper mineralisation in the ore. As a broad generalisation, cyanide recoverycyanide destruction and cyanide recovery costs for a fairly generic high cyanide-consuming case. The capital cost of a cyanide recovery plant could pay back in less than 2 years in many cases, particularly when high cyanide consumption is associated with copper mineralisation in the ore. As a broad generalisation, cyanide recovery