gold extraction from copper ore chlorination

gold extraction from copper ore chlorination

Gold Chlorination Processes & Methods

2016-8-31 · The crushed ore from the settling tanks was then shoveled into the pans. Salt and copper sulphate were added in the ratio of 5 to 10 lb. of salt and 2½ to 5 lb. of copper sulphate per ton of ore. When the ore is free from interfering minerals, the salt has been reduced as low as 2 lb. and the copper sulphate to 1¼ lb. per ton.

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The Extraction of Gold by Amalgamation and Chlorination

2019-10-31 · gold ores, and the use of the chlorination process after the 1870s to improve the extraction rate of the gold from the ore. The validity of the comment by Jan Todd on the lack of knowledge in Australia about chemical extraction processes and chlorination will be assessed as part of this discussion. Calcination

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Modeling of Au Chlorination Leaching Kinetics from

2021-10-19 · This study showed the kinetics of gold chlorination leaching from an anode slime complex containing copper, silver, barium, selenium, and tellurium. AgCl and BaSO4 control the rate of gold leaching, and the interface transfer and diffusion across the product was selected as the desirable kinetic model. The concentration of hydrochloric acid, chlorine gas flow rate, pulp

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Synergistic extraction of gold from the refractory gold ...

2017-7-1 · A synergistic extraction method for gold from the refractory gold ores via ultrasound and chlorination-oxidation was developed. The effects of solid-liquid ratio, extraction time, ultrasound power, NaClO concentration and NaOH concentration on the extraction rate of gold from the refractory gold ore were investigated.The optimum conditions were as follows: NaClO

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Gold extraction by chlorination using a pyrometallurgical ...

2009-12-3 · Technical Note Gold extraction by chlorination using a pyrometallurgical process M.W. Ojedaa,*, E. Perinob, M. del C. Ruiza a Instituto de Investigaciones en Tecnología Química (INTEQUI), Universidad Nacional de San Luis-CONICET, C.C. 290, 5700 San Luis, Argentina bÁrea de Química Analítica, Universidad Nacional de San Luis, San Luis, Argentina ...

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(PDF) Gold Extraction from Cyanidation Tailing Using ...

2018-12-5 · Li et al. [20] also used the chlorination roasting method to extract gold and silver from cyanide tailings and found that after the recovery rate

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Simultaneous extraction of gold and zinc from refractory ...

2020-4-1 · Trans. Nonferrous Met. Soc. China 30(2020) 1111−1123 Simultaneous extraction of gold and zinc from refractory carbonaceous gold ore by chlorination roasting process Hong-jun WANG1, Ya-li FENG1, Hao-ran LI2, Jin-xing KANG1 1. School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2.

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The environmental impact of gold production

2019-7-25 · the gold from ore, carbon adsorption to extract the gold from the cyanide solution and electrolytic refining and chlorination to refine the gold. The LCA assessed production from both non-refractory ores, which are relatively easy to treat, and refractory ores where the gold is ‘locked-in' and requires more complex processing.

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Leach Gold Ore with Chlorination | Gold Refining & Metal ...

2015-10-5 · Gold can then be precipitated from the solution with metabisulfite. If you are working with small ore samples you will most likely not have enough gold in solution to precipitate, use the stannous test as a check on gold presence. The article is a typical research job where any actual knowledge was absent. Deano

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The leaching and adsorption behaviour of gold ores

2021-12-22 · Telfer oxide ore, which was not found to be preg-robbing, enhanced gold extraction was observed at low cyanide concentrations, but not at high concentrations, as the gold was completely extracted by cyanide alone. The flotation feed and copper concentrate showed an enhancement in gold extraction due to the activated carbon

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Chapter - L HYDROMETALLURGY & SOLUTION MINING

2013-5-9 · Keywords: Copper anode slime, gold, chlorination process, Kinetics 1 INTRODUCTION Due to the importance of gold (Au), and its dwindling sources, the recovery of Au from the secondary sources is essential. It has been reported that about 20% of all Au deposits have significant copper mineralization commonly associated with chalcopyrite and

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Extracting gold from copper - Finishing

2022-1-22 · 2006. A. Dissolve all with aqua regia, then ppt out the copper with NaCl, then filter out the copper chloride and then ppt out the gold as pure with sodium metabisulfite mixed with water. Filter the gold fines and smelt. You could try dissolution in Nitric acid and that leaves the residue as gold. With excessive Cu, there is a lot of acid gas , brown and irritating so be careful.

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Gold extraction by chlorination using a pyrometallurgical ...

2009-12-3 · Technical Note Gold extraction by chlorination using a pyrometallurgical process M.W. Ojedaa,*, E. Perinob, M. del C. Ruiza a Instituto de Investigaciones en Tecnología Química (INTEQUI), Universidad Nacional de San Luis-CONICET, C.C. 290, 5700 San Luis, Argentina bÁrea de Química Analítica, Universidad Nacional de San Luis, San Luis, Argentina ...

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Leach Gold Ore with Chlorination | Gold Refining & Metal ...

2015-10-5 · Gold can then be precipitated from the solution with metabisulfite. If you are working with small ore samples you will most likely not have enough gold in solution to precipitate, use the stannous test as a check on gold presence. The article is a typical research job where any actual knowledge was absent. Deano

Read More

The environmental impact of gold production

2019-7-25 · the gold from ore, carbon adsorption to extract the gold from the cyanide solution and electrolytic refining and chlorination to refine the gold. The LCA assessed production from both non-refractory ores, which are relatively easy to treat, and refractory ores where the gold is ‘locked-in' and requires more complex processing.

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EFFECT OF OXIDIZING AGENTS IN EXTRACTING GOLD

Extracting the gold from anode slime had been attempted in the laboratory by applying wet chlorination method. Sodium hypochlorite (NaOCl) and hydrogen peroxide (H2O2) served as the oxidizing agents. Effects of various parameters such as solvent concentration, leaching time and temperature on the percent extraction of gold were studied.

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Simultaneous extraction of gold and zinc from refractory ...

2020-4-23 · Simultaneous extraction of gold and zinc from refractory carbonaceous gold ore by chlorination roasting process Hong-jun WANG 1, Ya-li FENG, Hao-ran LI2, Jin-xing KANG1 1. School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. State Key Laboratory of Biochemical Engineering, Institute ...

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Recovery of copper from ore | Gold Refining & Metal ...

2018-9-2 · Hi guys I am looking for a relatively inexpensive way of recovering copper from ore. On one of my mines I have encountered a very copper rich belt at a depth of 18 meters. Good gold content and hardly copper from 5- 15 Metre then the gold reef

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8 Types of Gold Ore- Properties and Ways to Process |

2021-11-30 · Iron oxide copper gold ore tends to be conical on the edge of granite, or appears as long banded breccia or massive iron oxide ore in faults or shears. Extraction method of iron oxide copper gold ore Crush, grind and classify the copper-containing gold oxide ore. Give the ore an alkaline treatment.

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Chlorination process for removing precious metals from

Ground ore and primary leach solutions are ideally combined at a temperature of 80°-85° C. The leach solution has a pH of 4-6. Although the primary leach solution will extract precious metals from the ore at lower and higher temperatures, the chlorination leach process does not appear to function as efficiently at these temperature extremes.

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Chapter - L HYDROMETALLURGY & SOLUTION MINING

2013-5-9 · Keywords: Copper anode slime, gold, chlorination process, Kinetics 1 INTRODUCTION Due to the importance of gold (Au), and its dwindling sources, the recovery of Au from the secondary sources is essential. It has been reported that about 20% of all Au deposits have significant copper mineralization commonly associated with chalcopyrite and

Read More

Extracting gold from copper - Finishing

2022-1-22 · 2006. A. Dissolve all with aqua regia, then ppt out the copper with NaCl, then filter out the copper chloride and then ppt out the gold as pure with sodium metabisulfite mixed with water. Filter the gold fines and smelt. You could try dissolution in Nitric acid and that leaves the residue as gold. With excessive Cu, there is a lot of acid gas , brown and irritating so be careful.

Read More

Synergistic extraction of gold from the refractory gold ...

A synergistic extraction method for gold from the refractory gold ores via ultrasound and chlorination-oxidation was developed. The effects of solid-liquid ratio, extraction time, ultrasound power, NaClO concentration and NaOH concentration on the extraction rate of gold from the refractory gold ore were investigated.

Read More

The environmental impact of gold production

2019-7-25 · the gold from ore, carbon adsorption to extract the gold from the cyanide solution and electrolytic refining and chlorination to refine the gold. The LCA assessed production from both non-refractory ores, which are relatively easy to treat, and refractory ores where the gold is ‘locked-in' and requires more complex processing.

Read More

EFFECT OF OXIDIZING AGENTS IN EXTRACTING GOLD

Extracting the gold from anode slime had been attempted in the laboratory by applying wet chlorination method. Sodium hypochlorite (NaOCl) and hydrogen peroxide (H2O2) served as the oxidizing agents. Effects of various parameters such as solvent concentration, leaching time and temperature on the percent extraction of gold were studied.

Read More

Chlorination process for removing precious metals from

Ground ore and primary leach solutions are ideally combined at a temperature of 80°-85° C. The leach solution has a pH of 4-6. Although the primary leach solution will extract precious metals from the ore at lower and higher temperatures, the chlorination leach process does not appear to function as efficiently at these temperature extremes.

Read More

Biomining: metal recovery from ores with microorganisms

Biomining is an increasingly applied biotechnological procedure for processing of ores in the mining industry (biohydrometallurgy). Nowadays the production of copper from low-grade ores is the most important industrial application and a significant part of world copper production already originates from heap or dump/stockpile bioleaching.

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Recovery of copper from ore | Gold Refining & Metal ...

2018-9-2 · Hi guys I am looking for a relatively inexpensive way of recovering copper from ore. On one of my mines I have encountered a very copper rich belt at a depth of 18 meters. Good gold content and hardly copper from 5- 15 Metre then the gold reef

Read More

8 Types of Gold Ore- Properties and Ways to Process |

2021-11-30 · Iron oxide copper gold ore tends to be conical on the edge of granite, or appears as long banded breccia or massive iron oxide ore in faults or shears. Extraction method of iron oxide copper gold ore Crush, grind and classify the copper-containing gold oxide ore. Give the ore an alkaline treatment.

Read More

Recovery of Copper from Copper Sulfide Concentrate by ...

2015-1-17 · Y. M. Zhao et al. 12 However, when 1% Na 2SO 3 was added, the copper extraction wasn’t down until 650 ˚C. This indicated that Na 2SO 3 can improve the degree of sulfating at high temperature. One possible reason is that the addition of Na 2SO 3 could prevent the decomposition of copper sulfate. Another possible reason is the exist of some com-

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