Recovery of Silver and Gold from Copper Anode Slimes,
11/09/2014· Silver and gold were extracted from copper anode slimes (1.54 wt.% of Ag, 0.1 wt.% of Au, and 12 wt.% of Cu) using sulfuric acid with the addition of MnO 2 and NaCl (ICC, Ghatsila, India).41–44 Sulfuric acid leaching of anode slimes without any additive resulted in poor recovery of silver and gold at 80°C for 240 min besides an appreciable amount of copper (58% Cu).Recovery of Gold and Silver from Copper Anode Slime,,This study has shown that gold and silver can be recovered from a complex anode slime containing copper, selenium, and tellurium, but a carefully planned leaching procedure is required. To extract the gold with thiourea, it is necessary to first remove the copper, selenium, tellurium, and most of the silver from the mixture. Once these elements are removed, the gold and most of the remaining,EXTRACTION OF GOLD, SILVER AND COPPER FROM THE COPPER,,commonly, small amounts of precious metals, such as gold and silver. During the smelting process of those concentrate all gold and silver are practically in the blister copper, which is cast into anodes. Those copper anodes are electrorefined in an electrolytic system, where the electrolyte is an acid copper sulphate solution, where a high purity electrolytic copper is produced (>999,9/1000). The slimeLeaching of gold and silver from anode slime with a,,13/02/2019· In order to develop a hydrometallurgical process to recover gold and silver from anode slime resulted from the treatment of copper sludge, leaching experiments of the anode slime were performed by a mixture of HCl and some oxidizing agents (H 2 O 2, NaClO, and HNO 3). Effect of the concentration of oxidizing agents, reaction temperature and time, pulp density and stirring speed on the leaching of the metals in the anode slimeComprehensive recoveries of selenium, copper, gold, silver,,01/08/2020· The element distribution analysis indicates that 92.9% of selenium, 95.8% of copper, 99.1% of gold, 99.4% of silver and 99.8% of lead in the anode slime entered their separate products, but the distribution of element arsenic was relatively scattered. The cost-benefit analysis manifests that a revenue of 702217.8 CNY can be gained for treating one ton of the copper anode slime by theEFFECT OF OXIDIZING AGENTS IN EXTRACTING GOLD,Extraction of gold, silver and copper from the copper electrorefining anode slime; separation of the metals, Global Symposium on Recycling, Waste Treatment and Clean Technology. Hait, J., Jana, R., Vinay, and Sanyal S., 2002. Some studies on sulfuric acid leaching of anode slimes with additives, Industrial Engineering Research, 41, 6593-6599.
Determination of gold in silver, copper, lead, selenium,
01/08/1980· A simple and sensitive combined solvent-extraction and atomic-absorption spectrometric method has been developed for the determination of gold in silver, copper, lead, selenium and anode slime. Samples are decomposed with hydrochloric and nitric acids, and gold is extracted as the trioctylmethylammonium—gold bromide complex and determined by atomic-absorption spectrometryPROCESSING OF COPPER ANODE-SLIMES FOR EXTRACTION OF,Anode slimes are collected from the bottom of the electrolytic cells during the refining of copper. There are two different kinds of slimes depending on the sources from which they are obtained. The first one produced during the processing of copper concentrate which exhibits a relatively high gold, silver, tellurium and seleniumgold and copper extraction process,EXTRACTION OF GOLD, SILVER AND COPPER FROM THE COPPER ELECTROREFINING ANODE SLIME: SEPARATION OF THE METALS Gabrielle N Bard1 and Luis G S Sobral1 1Centre for Mineral Technology-CETEM Key-words: Electrorefine, anode slime, copper Abstract Copper sulphides Concentrates, from the flotation process of copper primary ore; contain,The mechanism of gold extraction and copper precipitation ,Gold,Copper Anode Slime Recovery-Copper- - Metalcess,The copper/lead anode slime usually contain As, Sb, Bi and precious metals like gold and silver. Smelter of anode slime is most likely divided into two groups by the two different recovery processes based on its property and treatment capacity, i.e. pyrometallurgy and hydrometallurgy. The anode slime sometimes needs to be pre-treated by beneficiation to enrich valuable metals.Recovery of Gold and Silver from Copper Anode Slime,,15/02/2007· This study has shown that gold and silver can be recovered from a complex anode slime containing copper, selenium, and tellurium, but a carefully planned leaching procedure is required. To extract the gold with thiourea, it is necessary to first remove the copper, selenium, tellurium, and most of the silver from the mixture. Once these elements are removed, the gold and most of the remaining,v116n12a9 Extraction of copper and gold from anode slime,,copper, silver, and gold from anode slime and non-representational compounds CuSe, Ag 2Se, and CuAgSe with nitric acid. Dutrizac and Chen (1990) also studied slime leached with NaCl addition, and the main difference in the leach residue was found to be that silver occurs mainly as silver chloride instead of sulphate, although silver sulphate is also insoluble in sulphuric acid. Luo et al,
[PDF] EXTRACTION OF GOLD , SILVER AND COPPER
Copper sulphides Concentrates, from the flotation process of copper primary ore; contain, commonly, small amounts of precious metals, such as gold and silver. During the smelting process of those concentrate all gold and silver are practically in the blister copper, which is cast into anodes. Those copper anodes are electrorefined in an electrolytic system, where the electrolyte is an acid,EFFECT OF OXIDIZING AGENTS IN EXTRACTING GOLD,Extraction of gold, silver and copper from the copper electrorefining anode slime; separation of the metals, Global Symposium on Recycling, Waste Treatment and Clean Technology. Hait, J., Jana, R., Vinay, and Sanyal S., 2002. Some studies on sulfuric acid leaching of anode slimes with additives, Industrial Engineering Research, 41, 6593-6599.Determination of gold in silver, copper, lead, selenium,,09/02/2015· A simple and sensitive combined solvent-extraction and atomic-absorption spectrometric method has been developed for the determination of gold in silver, copper, lead, selenium and anode slime. Samples are decomposed with hydrochloric and nitric acids, and gold is extracted as the trioctylmethylammonium-gold bromide complex and determined by atomic-absorption spectrometryCopper Anode Slime - Metalcess,The copper anode slime and lead anode slime usually contain precious metals like gold and silver. Depending on the treatment capacity, process of anode slime recovery is achieved by two different methods, i.e. pyro-metallurgy and hydrometallurgy. Focusing on high demand of precious metal recovery and large treatment amount, Metalcess offers solution of TBRC smelting + lead distillation & gold,US4293332A - Hydrometallurgical process for,A hydrometallurgical process for recovering precious metals, such as gold, silver, selenium, and tellurium etc. from anode slime has been developed and tested successfully. The process comprises three major unit operations: leaching, liquid-liquid extraction, and reduction. The decopperized anode slime is first leached with nitric acid at an elevated temperature to obtain a leach solution,Development of a hydrometallurgical process for the,,20/03/2019· In order to recover gold and silver from anode slimes containing Cu, Ni, Sn, and Zn, an integrated hydrometallurgical process consisting of leaching, solvent extraction, and cementation was developed. All the metals together with 10% of Ag(I) were dissolved by the mixture of HCl and H2O2 at the optimum conditions. Separation of Au (III) together with Sn (II) was performed by Cyanex 272 from,
Some Studies on Sulfuric Acid Leaching of Anode Slime
13/11/2002· Comprehensive recoveries of selenium, copper, gold, silver and lead from a copper anode slime with a clean and economical hydrometallurgical process. Chemical Engineering Journal 2020, 393, 124762. DOI: 10.1016/j.cej.2020.124762. Wei Dong Xing, Seong Ho Sohn, Man Seung Lee. A Review on the Recovery of Noble Metals from Anode Slimes. Mineral Processing and Extractivegold and copper extraction process,EXTRACTION OF GOLD, SILVER AND COPPER FROM THE COPPER ELECTROREFINING ANODE SLIME: SEPARATION OF THE METALS Gabrielle N Bard1 and Luis G S Sobral1 1Centre for Mineral Technology-CETEM Key-words: Electrorefine, anode slime, copper Abstract Copper sulphides Concentrates, from the flotation process of copper primary ore; contain,The mechanism of gold extraction and copper precipitation ,Gold,Recovery of Silver and Gold from Copper Anode Slimes,Copper anode slimes, produced from copper electrolytic refining, are important industrial by-products containing several valuable metals, particularly silver and gold. This article provides a comprehensive overview of the development of the extraction processes for recovering silver and gold from conventional copper anode slimes. Existing processes, namely pyrometallurgical processes,EXTRACTING SILVER FROM ANODE SLIME AFTER LEAD,Anode slime, a byproduct from the process of copper electrorefining into the copper cathode, contains several valuable elements that can be extracted after Cu and Pb separations. Another alternative route for extracting the precious metals is still needed in terms of gaining more economical route. This research aims to seek the new route to extract the precious metals, especially silver from,Comprehensive recoveries of selenium, copper, gold, silver,,A clean hydrometallurgical process has been developed to efficiently and economically recover selenium, copper, gold, silver and lead from a copper anode slime. The mixture of H2SO4 and H2O2 was demonstrated to be effective for selenium leaching based on their synergistic effects, and the potential synergy mechanism was proposed. Na2SO3 reduction and iron powder precipitation wereWO2017175032A1 - Gold recovery from copper anode,A method for recovering gold from copper anode slime is provided. The method comprises washing copper anode slime with an acid so as to obtain a slime-acid solution. The method further comprises obtaining a washed copper anode slime from the slime-acid solution. The method further comprises dissolving the washed copper anode slime in a thiourea dissolvent solution so as to obtain a slime,
Anode Slime Gained During Electrolysis Process of,
KEYWORDS: Anode slime; Copper; Gold; Silver; PGM; Electro refining. INTRODUCTION Electrolytic refining of metals is a suitable and unique process considering the level of energy consumption, refining at low temperature and is the most commonly used method to refine metals from impurities and to produce highly pure metals. Electrolytic refining of copper production has considerably increased,copper anode slime - Gold Refining Forum,26/05/2020· If you use copper sulfate, sulfuric acid as the electrolyte the anode slims with be black (or perhaps dark brown if the gold content is high enough). Once I tried using copper chloride/HCl as an electrolyte and found that it also worked really well except for one problem. The silver came out of the anode as silver chloride, turned the entire electrolytic bath white (and then black from the,Dissolution Optimization of Copper from Anode Slime,In the present study, aimed at the extraction of copper and the concentration of precious metals in anode slime, the optimum process conditions were sought for the dissolution anode slime from the Sarkuysan Co. in Turkey. The blade number of the mechanical stirrer, reaction temperature, O2 flow rate, stirring speed, acid concentration, solid-to-liquid ratio, reaction period, and roasting,gold and copper extraction process,EXTRACTION OF GOLD, SILVER AND COPPER FROM THE COPPER ELECTROREFINING ANODE SLIME: SEPARATION OF THE METALS Gabrielle N Bard1 and Luis G S Sobral1 1Centre for Mineral Technology-CETEM Key-words: Electrorefine, anode slime, copper Abstract Copper sulphides Concentrates, from the flotation process of copper primary ore; contain,The mechanism of gold extraction and copper precipitation ,Gold,Anode Slimes — Reclaim, Recycle, and Sell your Precious,,You can send us the following anode slimes scrap to be refined and recycled: Materials that are by-products of copper refining and smelting. Anode Slimes usually contain high concentrations of silver, as well as gold, platinum, palladium and possibly rhodium; See the other forms of silverCopper Refining Electrolyte and Slime Processing,,Copper electro-refining (Cu-ER) is the principal method for producing >70% of high or 99.97% pure copper cathodes from 97-99% pure blister/fire refined-scrap copper anodes. While the inert and most of less soluble impurities settle as anode slime/sludge, other soluble impurities, particularly the metalloids (group VA/15 elements or Q: As, Sb and Bi) and some transition metals (Mt) co-dissolved,
