· In this paper, the hydrometallurgical method of recovering Au, Ag, Pt, Pd, Se, and Te is reviewed with copper anode slime (CAS) as an example. At present, more than …

In the case of copper, the common hydrometallurgical recovery method includes chemical leaching in sulphuric,22−25 nitric,26,27or hydrochloric acids28−30combined with different oxidants such as air, ferric chloride, ferric sulfate, or hydrogen peroxide. The leaching process in these acidic media has been

 · A strategy for the efficient recovery of highly pure copper and antimony metals from electronic waste (e-waste) was implemented by the combination of …

What is claimed is: 1. In a hydrometallurgical process for the production of metallic copper comprising: (a) a reduction stage in which materials containing copper-iron sulfide ore concentrates are introduced into an aqueous chloride solution containing cupric chloride and ferric chloride to solubilize at least a portion of the copper in said materials and reduce at …

The remaining 20 of primary copper production comes from hydrometallurgical processing of mainly copper oxide and chalcocite or This copper is recovered by leaching, followed by solvent extraction and Electrowinning The final product is electrowon cathode copper, which is equal to or often greater in purity than electro-refined copper...

Discuss; 239000010949 copper Substances 0.000 title claims abstract description 101; 229910052802 copper Inorganic materials 0.000 title claims abstract description 93; RYGMFSIKBF

 · Hydrometallurgical process for the recovery of copper, lead or zinc Ricardo Benavides Pérez;Isaías Almaguer Guzmán;David Ezequiel Vázquez Vázquez CA2949036 CA2949036C HYDROMETALLURGICAL PROCESS FOR …

 · The results show that using an acid system (i.e. ordinary leaching), reagent consumption reached 473.9 kg H2SO4/ton of slag, with copper recovery of only 50.8% and Fe recovery of over 67.0%.

A hydrometallurgical process for treating copper feed materials containing gold and/or silver by simultaneously leaching copper, gold and/or silver into an aqueous cyanide solution, recovering copper in metallic form by electrowinning and regenerating cyanide ions is provided, wherein high current efficiencies are achieved at high current densities and at …

 · The goal of this research proposal is to develop hydrometallurgical route (lixiviação- (purification) -eletrorrecuperação) for recovery of electronic scrap metals, particularly plates printed ciruito (PCI) computers, mobile phones and …

a process for the hydrometallurgical recovery of nickel, cobalt or copper metal values from an unreduced metal-bearing source containing said metal values which comprises treating said metal-bearing source with an aqueous solution containing a metal chelate and carbon monoxide at ambient temperatures and pressures, and thereafter subjecting said …

 · A hydrometallurgical process for the treatment of sulfide polymetallic ores and concentrates of copper and Zinc, and by-products of Lead and Zinc Smelting plants, treated independently and / or their mixtures, which have relevant contents of Lead, Copper, zinc

 · Copper recovery by SX-EW can be explained as a 4-step process. Figure 1 shows the flow of solutions and products within the SX-EW circuit. The steps are as follows: 1) LEACH Low grade copper ore is leached, producing solid waste and copper PLS 2) …

The current study presents an effort to develop a sustainable hydrometallurgical process for the recovery of copper from waste printed circuit boards (PCBs) to be applied at local small to medium industrial units. The process aims to separate and recover copper from filter dust produced during the crushing of PCBs using a hammer mill in a recycling facility. Due to …

Hydrometallurgical recovery of copper and cobalt from reduction-roasted copper converter slag ´ Ewa Rudnik *, Lidia Burzynska, Wanda Gumowska AGH University of Science and Technology, Faculty of Non-Ferrous Metals, Department of Physical Chemistry and Metallurgy of Non-Ferrous Metals, Laboratory of Physical Chemistry and …

 · In the ECS reaction for copper recovery, the copper recovery ratio was 97.31% when the reaction occurred for 2 h at 70 °C and 75 A/m 2. The product obtained during …

 · Long Le and co-workers studied the recovery of copper from personnel computer PCBs using 3.5 M nitric acid which dissolved 99% copper at 323 K in 1 h (Long Le et al., …

 · The current study presents an effort to develop a sustainable hydrometallurgical process for the recovery of copper from waste printed circuit boards (PCBs) to be applied …

 · The aim of this work was to recover metal values of copper, zinc and lead from brass scrap and melting slag applying a hydrometallurgical method. Parameters affecting …

 · DOI: 10.1016/J.HYDROMET.2013.09.012 Corpus ID: 97509621; Hydrometallurgical recovery of copper from complex mixtures of end-of-life shredded ICT products @article{Xiao2013HydrometallurgicalRO, title={Hydrometallurgical recovery of copper from complex mixtures of end-of-life shredded ICT products}, author={Yanping …

Present paper focuses on the selective recovery of copper from the enriched ground printed circuit boards (PCBs) using leaching and solvent extraction. The metal-enriched ground sample obtained from the beneficiation of the sized PCBs in a laboratory scale column type air separator contained mainly 49.3% Cu, 3.83% Fe, 1.51% Ni, 5.45% Sn, 4.71% Pb, …

 · The recovery of precious metals from waste printed circuit boards (PCBs) is an effective recycling process. This paper presents a promising hydrometallurgical process to recover precious metals ...

copper hydrometallurgical recovery hydrometallurgical Prior art date Application number FI972663A Other languages Finnish (fi) Swedish (sv) Other versions FI972663A0 (en FI115305B (en Inventor David L Jones Original Assignee Cominco Eng Services Priority date (The priority date is an assumption and is not a legal conclusion.

 · The results show that using an acid system (i.e. ordinary leaching), reagent consumption reached 473.9 kg H2SO4/ton of slag, with copper recovery of only 50.8% …

 · The results indicate that considering slag copper recovery in the hydrometallurgical cut-off grade algorithms reduces the environmental costs caused by slag dumping and leads to more NPV by 9%. Determining the hydrometallurgical cut-off grades specifies the destination of low grade materials and this is subjected to more benefits in …

 · A comparison of three hydrometallurgical methods for selective recovery of copper from low-grade electric and electronic wastes was reported. Scraps were smelted to produce Cu−Zn−Sn−Ag alloy.

Recovery of copper from metallurgical waste is a trend that is being followed from beginning of industrial age and has many developments over a large time frame. ... E.H., Barrett, E.C., 1992. "Hydrometallurgical treatment of electric arc furnace dusts." US Pat., 5,082,493. Yuanyuan Tang, Siu-Wai Chan,Kaimin Shih, 2014, "Copper ...

 · A comparison of three hydrometallurgical methods for selective recovery of copper from low-grade electric and electronic wastes was reported. Scraps were smelted …

By sulfurization in closed system with 140 o C for 1 hour and then heating and roasting with 600 o C for 360 minutes gives better result for recovery of copper up to 99.2%. Copper recovery from bronze scrap Bronze is the mixture of copper, lead and tin.

 · A strategy for the efficient recovery of highly pure copper and antimony metals from electronic waste (e-waste) was implemented by the combination of hydrometallurgical and electrochemical processes. The focus is on copper recovery as the main component in the leached solution, whereas the antimony recovery process was established as a ...

 · Sherritt has evaluated the hydrometallurgical recovery of copper from sulphide concentrates since the 1960s [1,2,3,4], including from arsenical copper concentrates [5, 6], as have other parties.Despite such efforts, pressure oxidative leaching of copper concentrates has so far not found a distinct area of application on a par with …

 · Present paper focuses on the selective recovery of copper from the enriched ground printed circuit boards (PCBs) using leaching and solvent extraction. The metal-enriched ground sample obtained from the beneficiation of the sized PCBs in a laboratory scale column type air separator contained mainly 49.3% Cu, 3.83% Fe, 1.51% Ni, 5.45% …

a hydrometallurgical process for treating copper feed materials containing gold and/or silver by simultaneously leaching copper, gold and/or silver into an aqueous cyanide solution, recovering copper in metallic form by electrowinning and regenerating cyanide ions is provided, wherein high current efficiencies are achieved at high current …

 · The goal of this research proposal is to develop hydrometallurgical route (lixiviação- (purification) -eletrorrecuperação) for recovery of electronic scrap metals, …