Recovery of bismuth and arsenic from copper smelter flue dusts after copper and zinc extraction

Chen, Ya; Liao, Ting; Li, Gaibian; Chen, Baizhen; Shi, Xichang

doi:10.1016/j.mineng.2012.06.008

Cited by 105 publications

(27 citation statements)

References 10 publications

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“…Considering the hydrometallurgical processing for the copper dusts, several options for the recovery of copper and other metals from these copper-bearing wastes have been proposed [3][4][5][6]. In a number of these procedures the sequence leaching-solvent extraction-electrowinning, that is the same that is currently found for the treatment of copper oxidised raw materials, has been applied to the recovery of copper.…”

Section: Introductionmentioning

confidence: 99%

Recycling of copper flue dust via leaching-solvent extraction processing

García‐Díaz

López

Largo

2015

Desalination and Water Treatment

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A laboratory/bench scale investigation relating the copper recovery from a Chilean copper flue dust is described. Since the dust contained a high amount of copper (near 24 %), the considered option consists in the leaching of the metallic material with ammonium chloride solution, thus enabling the dissolution of copper via either of its ammoniacal complexes, and also rendering, due to the almost neutral conditions of the leaching solution, a near complete lean solution with respect to the presence of other copper metal-accompanying in the dust. Copper enters the solvent extractionelectrowinning circuit due to the next equilibrium:

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Section: Introductionmentioning

confidence: 99%

Recycling of copper flue dust via leaching-solvent extraction processing

García‐Díaz

López

Largo

2015

Desalination and Water Treatment

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“…Moreover, this image confirms the presence of As and Bi in the amorphous phase, which was not detected in the XRD or SEM analyses. Both elements could be present as oxide [15,21,50] The mapping reveals regions with a high content of sulphur and copper, which corresponds to the spherical particles previously identified as Cu 2 S in the SEM analysis. Moreover, there were sections in which sulphur and zinc coincided, confirming the presence of ZnSO 4 , previously found in the results of the TGA analysis.…”

Section: Scanning Electron Microscopymentioning

confidence: 58%

“…The SC sample contains a high concentration of As and Bi (around 10%), however, no compound these elements were found neither by XRD, SEM or thermal analysis. Considering the consulted literature, these elements could be as oxides (As 2 O 3 and Bi 2 O 3 ) [6,23,32,50,52]. Furthermore, the SS sample present around 2% Ge which could be as GeO and/or GeS 2 [18], but these compounds were also not detected by the previous characterization techniques.…”

Section: Discussionmentioning

confidence: 99%

Characterization of Two Sludges from a Pyrometallurgical Copper Smelting Complex for Designing a Se and Pb Recovery Proposal

Paz-Gómez

Pérez-Moreno

Ruiz-Oria

et al. 2020

Waste Biomass Valor

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Gas scrubbing sludge (SS) and fine dust of converters (SC) are wastes generated in the off-gas cleaning system of smelting and converting processes. Both wastes are considered hazardous materials due to their high metal contents and leaching characteristics. The main purpose of this study was to gain essential knowledge on the recovery of valuable elements contained in these wastes. Thus, an exhaustive characterization was carried out to determine the composition, mineral phases, particle size, and leachability of both wastes (SS and SC) as a preliminary step to select the most appropriate applications and treatment for them. These wastes are composed of fine particles (~ 95% < 63 µm), mainly containing Pb (> 20%) as anglesite (PbSO 4), while SS presents a high concentration of Se (34%), which is mainly identified as metallic selenium. Therefore, these residues could be used as secondary sources of Pb and Se. The recovery of Se by roasting process and Pb recovery by hydrometallurgical route seem to be the best options for the management of these wastes.

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“…Junto con el cobre y el hierro, que representan los metales más importantes en el producto introducido, se encuentran otros elementos relevantes en el proceso que incluyen el zinc, el plomo, el arsénico, el amtimonio y el bismuto. Estudios muestran que aproximadamente 15 % del arsénico queda en la mata de cobre y más del 20 % se incorpora en la escoria, mientras que el resto, se acumula en el polvo volátil [4,6].…”

Section: Materiales Y Métodosunclassified

Aspectos de la formación de polvo volátil en la industria del cobre primario

Steinacker

Antrekowitsch

2018

Matéria (Rio J.)

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RESUMEN Durante la producción de cobre primario y de escoria fayalitica se genera una cantidad notable de polvo volátil, el cual tiene una función importante en la industria de cobre. Mientras que elementos valiosos como el cobre o los metales nobles permanecen en los productos más pesados y densos, otros como el zinc o el plomo se acumulan preferiblemente en la fracción ligera del polvo. La disminución en la calidad del concentrado del mineral implica la introducción de elementos nuevos al sistema de producción del cobre primario, que pueden causar problemas en el control del proceso o en el trato con materiales tóxicos para el medio ambiente [1]. En este trabajo se explica la formación de polvo volátil y se resalta la diferencia entre la fracción física y química. Mientras que las partículas arrastradas determinan la fracción física, la fracción química se explica de otra manera. Debido a la alta temperatura durante el proceso de fusión primario de cobre, determinados compuestos se evaporan y recondensan en el sistema de conductos de escape. Consecuentemente, el análisis químico del polvo volátil posee una gran variedad de elementos distintos [2,3]. A fin de examinar la influencia de los diferentes elementos que aparecen en el concentrado del mineral, se efectuaron cálculos de la presión de vapor que permiten obtener un mejor conocimiento del sistema. Además, son considerados compuestos sulfurados y oxídicos. Otros factores como el tamaño de grano de las partículas de polvo y la formación probable de nuevas fases en el sistema de escape también son tomados en cuenta para mejorar el entendimiento en la formación del polvo volátil en la producción primaria de cobre [1].

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Recovery of bismuth and arsenic from copper smelter flue dusts after copper and zinc extraction

Cited by 105 publications

References 10 publications

Recycling of copper flue dust via leaching-solvent extraction processing

Recycling of copper flue dust via leaching-solvent extraction processing

Characterization of Two Sludges from a Pyrometallurgical Copper Smelting Complex for Designing a Se and Pb Recovery Proposal

Aspectos de la formación de polvo volátil en la industria del cobre primario

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