دورية أكاديمية
Detailed characterisation of precious metals and critical elements in anode slimes from the Olympic Dam copper refinery, South Australia
| العنوان: | Detailed characterisation of precious metals and critical elements in anode slimes from the Olympic Dam copper refinery, South Australia |
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| المؤلفون: | Cook, N.J., Ehrig, K., Ciobanu, C.L., King, S.A., Liebezeit, V., Slattery, A.D. |
| المصدر: | http://dx.doi.org/10.1016/j.mineng.2023.108539Test. |
| بيانات النشر: | Elsevier BV |
| سنة النشر: | 2024 |
| المجموعة: | The University of Adelaide: Digital Library |
| مصطلحات موضوعية: | Minor metals, Copper anodes, Electrorefining, Anode slimes, Characterisation, Olympic Dam |
| الوصف: | Together with silver (Ag) and gold (Au), which are almost always recovered, the impurity elements, arsenic (As), antimony (Sb), bismuth (Bi), tin (Sn), lead (Pb), selenium (Se) and tellurium (Te) are major components of anode slimes, a by-product of the electrorefining of impure copper. The Olympic Dam electrorefinery, South Australia, generates raw slimes (~30 % Cu, 5–10 % Ag, 0.5–1 % Au, 3–4 % Bi, ~2–3 % Sb, and 5–6 % As), which subsequently undergo decopperisation and then pH-neutralisation. Decopperisation involves treatment with steam and acid at 90 ◦C, giving a slime that contains ~ 1 % Cu, 8–17 % Ag, ~2% Au, ~7% Bi, ~4–5 % Sb, and ~ 3 % As. pH-neutralisation is achieved by addition of NaOH and is the final step prior to cyanidation and precious metal recovery. Bulk chemical compositions, gross morphology and particle size distributions are complemented by highmagnification backscatter imaging and energy-dispersive X-ray analysis of individual particles in raw, decopperised, and pH-neutralised anode slimes. In a first micron-to-nanoscale approach, we use electron backscatter diffraction mapping to assess the crystallinity of individual component phases and a scanning transmission electron microscopy study on micron-sized slices extracted in-situ to confirm the crystal structure of a conspicuous BiAsO4 phase as rooseveltite. The results establish an in-depth understanding of element deportments in slimes and their evolution during sequential stages of treatment. Characterisation studies for Te, Se, Sb, Bi, and As are essential prerequisites for any design of metallurgical circuits for by-product recovery from anode slimes and/or electrolyte. This study aims to demonstrate that complementary cutting-edge microanalytical techniques widely used in mineralogy provide a level of detail essential when considering refinery slimes as a new source of critical commodities. ; Nigel J. Cook, Kathy Ehrig, Cristiana L. Ciobanu, Samuel A. King, Vanessa Liebezeit, Ashley D. Slattery |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0892-6875 |
| العلاقة: | http://purl.org/au-research/grants/arc/LP200100156Test; Minerals Engineering, 2024; 206:108539-1-108539-16; https://hdl.handle.net/2440/140536Test; Cook, N.J. [0000-0002-7470-3935]; King, S.A. [0000-0003-4337-8647]; Slattery, A.D. [0000-0003-4023-3506] |
| DOI: | 10.1016/j.mineng.2023.108539 |
| الإتاحة: | https://doi.org/10.1016/j.mineng.2023.108539Test https://hdl.handle.net/2440/140536Test |
| حقوق: | © 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0Test/). |
| رقم الانضمام: | edsbas.5C4C84BD |
| قاعدة البيانات: | BASE |
| تدمد: | 08926875 |
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| DOI: | 10.1016/j.mineng.2023.108539 |