Recovery of scattered and precious metals from copper anode slime by hydrometallurgy: A review

Liu, Gongqi; Wu, Yufeng; Tang, Aijun; Pan, De’an; Li, Bin

doi:10.1016/j.hydromet.2020.105460

Cited by 70 publications

(20 citation statements)

References 159 publications

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“…After an electrorefining cycle, the slime is drained from the bottom of the cell and forwarded to the recovery of copper and byproducts. Several authors have evaluated methods to reduce anode slime formation or alternative techniques to recover copper and valuable metals from it, as shown in the review articles recently published [127,[133][134][135]. Table 10 presents the composition of anode slimes from Chilean companies.…”

Section: Anode Slimementioning

confidence: 99%

“…Despite these variations, note in Table 10 that the anode slimes from most Chilean refineries contain high mass fraction of copper and other valuable metals, such as Sb, Se, Ag, Au, with Ni, Bi and Te in lower concentrations. This has encouraged authors to conduct extensive research on the recovery of valuable metals from anode slimes, involving basically four broad categories of processes: pyrometallurgy, partial hydrometallurgy, surface chemical (e.g., flotation) and physical separation processes, and hydrometallurgical processes [133]. These processes present several limitations, as shown in Refs.…”

Section: Anode Slimementioning

confidence: 99%

“…These processes present several limitations, as shown in Refs. [127,[133][134][135]. According to Liu et al [133], the major difficulties in the treatment of anode slimes are low precious metal recovery rate, high consumption of chemicals, and large amounts of residues generated.…”

Section: Anode Slimementioning

confidence: 99%

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Chemical Composition Data of the Main Stages of Copper Production from Sulfide Minerals in Chile: A Review to Assist Circular Economy Studies

et al. 2022

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The mining industry has faced significant challenges to maintaining copper production technically, economically, and environmentally viable. Some of the major limitations that must be overcome in the coming years are the copper ore grade decline due to its intense exploitation, the increasing requirements for environmental protection, and the need to expand and construct new tailings dams. Furthermore, the risk of a supply crisis of critical metals, such as antimony and bismuth, has prompted efforts to increase their extraction from secondary resources in copper production. Therefore, improving conventional processes and developing new technologies is crucial to satisfying the world’s metal demands, while respecting the policies of environmental organizations. Hence, it is essential that the chemical composition of each copper production stage is known for conducting these studies, which may be challenging due to the huge variability of concentration data concerning the ore extraction region, the process type, and the operational conditions. This paper presents a review of chemical composition data of the main stages of copper production from sulfide minerals, such as (1) copper minerals, (2) flotation tailings, (3) flotation concentrates, (4) slags and (5) flue dust from the smelting/converting stage, (6) copper anodes, (7) anode slimes, (8) contaminated electrolytes from the electrorefining stage, (9) electrolytes cleaned by ion-exchange resins, and (10) elution solutions from the resins. In addition, the main contributions of recent works on copper production are summarized herein. This study is focused on production sites from Chile since it is responsible for almost one-third of the world’s copper production.

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Section: Anode Slimementioning

confidence: 99%

Section: Anode Slimementioning

confidence: 99%

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Chemical Composition Data of the Main Stages of Copper Production from Sulfide Minerals in Chile: A Review to Assist Circular Economy Studies

et al. 2022

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“…Copper mainly exists with other metals in the form of complex sulfide ores. Such minerals can be detached from each other through the flotation process and processed via pyrometallurgical routes [1][2][3][4]. Although employing the pyrometallurgical routes is not environmentally attractive due to the production of significant SO 2 ; however, nearly 85% of the universal Cu is obtained by such processes [5,6].…”

Section: Introductionmentioning

confidence: 99%

Synergistic effects of ferric sulfate addition and mechanical activation on leaching of Sarcheshmeh copper sulfide concentrate

Asl

Razavizadeh

2021

jcc

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In this paper, the leaching of a sulfide concentrate, from "Sarcheshmeh Copper Complex", by sulfuric acid is studied. The influences of sulfuric acid concentration and leaching temperature were scrutinized to optimize the processing parameters and to disclose the kinetics of the extraction process. The leaching rate of copper was not significantly improved with enhancing the temperature and concentration of sulfuric acid. The formation of elemental sulfur was found as a reducer of the leaching rate. Only ~70% of copper was extracted by adding 1M ferric sulfate as the oxidant agent, as well as increasing the leaching temperature up to 85 °C. By leaching the mechanically activated concentrate in Fe 2 (SO 4 ) 3 -doped H 2 SO 4 at 85 °C, the amount of extracted copper was ~90% after 180 min. The experimental results were excellently fitted with the diffusion-controlled kinetic model as the activation energy of ~27 kJ/mol was estimated.

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“…***Ag2SO4, Ag2Se, Ag2Te, CuAgSe, AgCl, (Ag/Au)Te2, Ag2S, Ag2O Se * 413 ***Ag2Se, Cu2Se, CuAgSe, Se Te * 83 ***Ag2Te, Cu2Te, (Ag/Au)Te2, Te Au * 21,9 ***Au, (Ag/Au)Te2 * Anot çamuru bünyesindeki miktarları ppm seviyesindedir. ** XRD analizi ile tespit edilen yapılar[14,15] *** Anot çamuru bu bünyesindeki muhtemel fazlar[34]…”

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Bakır Anot Çamurundan Bakırın Liçinde Düşük Ötektik Noktalı Çözücü Kullanımının Araştırılması

Rüşen

Topçu

Kalem

2021

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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Bu çalışmada, pirometalurjik yöntemle metalik bakır üretiminin elektrokazanım aşamasında ortaya çıkan anot çamurundan bakır geri kazanımı üzerine çevre ve insan sağlığına duyarlı düşük ötektik noktalı çözücü (DES) kullanımı araştırılmıştır. Taguchi optimizasyon yöntemi kullanılarak liç sıcaklığı, liç süresi ve katı/sıvı oranı deneysel parametrelerin bakır geri kazanımı üzerine etkisi incelenmiştir. Kolin klorür (ChCl) ve ürenin 1:2 molar oranda karıştırılmasıyla hazırlanan DES çözücüsü ile yapılan liç işlemleri sonunda optimum şartlar; 95 o C'liç sıcaklığı, 2 saat liç süresi ve 1/20 katı/sıvı oranı olarak belirlenmiş ve bu şartlarda %98 bakır geri kazanımı elde edilmiştir. Yapılan bu çalışma ile ChCl-üre karışımıyla hazırlanan DES çözücüsünün anot çamurundan bakır geri kazanımı için çevreci bir çözücü adayı olabileceği ortaya konulmuştur.

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Recovery of scattered and precious metals from copper anode slime by hydrometallurgy: A review

Cited by 70 publications

References 159 publications

Chemical Composition Data of the Main Stages of Copper Production from Sulfide Minerals in Chile: A Review to Assist Circular Economy Studies

Chemical Composition Data of the Main Stages of Copper Production from Sulfide Minerals in Chile: A Review to Assist Circular Economy Studies

Synergistic effects of ferric sulfate addition and mechanical activation on leaching of Sarcheshmeh copper sulfide concentrate

Bakır Anot Çamurundan Bakırın Liçinde Düşük Ötektik Noktalı Çözücü Kullanımının Araştırılması

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