Influence of the composition of Cu–Co–Fe alloys on their dissolution in ammoniacal solutions

Burzyńska, L.; Gumowska, W.; Rudnik, Ewa

doi:10.1016/j.hydromet.2003.08.007

Cited by 15 publications

(5 citation statements)

References 7 publications

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“…The biggest group works at the Department of Physiochemistry and Metallurgy of Non-Ferrous Metals at the Faculty of Non-Ferrous Metals. In the first years of the 2000s, the research teams guided by professors Lidia Burzyńska, Wanda Gumowska, and Krzysztof Fitzner performed intensive experiments in the field of, e.g., anodic dissolution [4][5][6][7], metal recovery [8,9], and electrodeposition of transition group composites [10][11][12] and metal alloys [13,14]. Then, with the growth of the research group, many new directions of interest have appeared, such as catalytic properties of transition group metals and alloys [15][16][17][18][19], tellurium thin films [20,21], and synthesis of nanostructures in the anodic alumina oxide templates [22][23][24].…”

Section: Agh University Of Science and Technologymentioning

confidence: 99%

Electrochemistry at Krakowian research institutions

Skibińska

Żabiński

2023

J Solid State Electrochem

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The electrochemistry research team activity from Poland is marked by significant increase in the last 20 years. The joining of European Community in 2004 gives an impulse for the development of Polish science. The development of electrochemistry has been stimulated by cooperation with industry and the establishment of technology transfer centers, technology parks, business incubators, etc. and the mostly by simplified international collaborations. Five research institutions from Krakow reports work in the field of electrochemistry. The achievements of all teams are briefly described.

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Section: Agh University Of Science and Technologymentioning

confidence: 99%

Electrochemistry at Krakowian research institutions

Skibińska

Żabiński

2023

J Solid State Electrochem

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“…(1). This process is useful only for copper-rich alloys, since various phase composition can inhibit spontaneous copper dissolution from the metallic phase [11]. Usually, more concentrated solutions are applied for ammoniacal leaching of the scraps [e.g., 5 M NH 3 and 0.5 M Cu(II)] [8][9][10], however, in this study, fundamental behavior of the metals during spontaneous dissolution of the alloy was expected to investigate, hence less aggressive baths with natural oxygen content in the solutions were used.…”

Section: Leaching Stagementioning

confidence: 99%

“…Alkaline ammonia-ammonium salt solutions show some advantages in the leaching of polymetallic materials [8][9][10][11], since dissolution of copper is specific (autocatalytic):…”

Section: Introductionmentioning

confidence: 99%

“…High-temperature treatment allows removal of all non-metallic elements and organic compounds from the origin material. Based on the previous experience [11], ammoniacal leaching of the multicomponent alloy and further electrolysis were selected for recovery of copper. Recently, Lim et al [10] presented comparative research on the behavior of some metals (Cu, Zn, Ni, Pb, Sn, Au, Ag) dissolved from pure powders and an alloy obtained from smelting reduction process of mobile phone and printed circuit boards, using sulfate and chloride ammoniacal solutions.…”

Section: Introductionmentioning

confidence: 99%

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Ammoniacal leaching and recovery of copper from alloyed low-grade e-waste

Rudnik

Pierzynka

Handzlik

2014

J Mater Cycles Waste Manag

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The paper concerns a hydrometallurgical method for selective recovery of copper from low-grade electric and electronic wastes. The following consecutive stages were proposed: smelting of the scraps to produce Cu-Zn-Ag alloy, leaching of the alloy in ammoniacal solution, and selective copper electrowinning. Cu-Zn-Ag alloy was a polymetallic and five-phase system. It was leached in chloride, carbonate, sulfate and thiosulfate solutions. This resulted in the separation of the metals, wherein metallic tin and silver as well as lead salts remained in the slimes, while copper and zinc were transferred to the electrolyte. Copper was selectively recovered from the ammoniacal solutions by the electrolysis, leaving zinc ions in the electrolyte. The best conditions of the alloy treatment were obtained in the ammoniacarbonate system, where the final product was copper of high purity (99.9 %) at the current efficiency of 60 %. Thiosulfate solution was not applicable for the leaching of the copper alloy due to secondary reactions of the formation of copper(I) thiosulfate complexes and precipitation of copper(I) sulfide, both inhibiting dissolution of the metallic material.

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“…Burzynska et al studied electrochemical dissolution of Cu-Co alloy in the different system including NH 3 -(NH 4 ) 2 SO 4 (Burzynska et al, 2004a), NH 3 -NH 4 Cl (Burzynska et al, 2008), H 2 SO 4 (Burzynska et al, 2004b;Feng et al, 2014) and Na 2 SO 4 (Hong et al, 2010). The metals can be dissolved into the electrolyte or remained into anode slime in different system.…”

Section: Introductionmentioning

confidence: 99%