2025 - Sustainable Industrial Processing Summit
SIPS2025 Volume 11. Intl. Symp on Iron and Steel, Non-ferrous, Metals, Bioextraction, Molten and Recycling
| Editors: | F. Kongoli, P. Assis, R. Alvarenga, J.A. de Castro, B. Deo, W.F. Santos Jr., S.L. de Andrade, GS. Mahobia, T. Usui, J. Antrekowitsch, A. Charitos, C. Oosterhof, M. Stelter, Z. Wang, A. Dmitriev, M.C. Gomez Marroquin, Y. Gordon, M. Naimanbayev, S. Prakash, V. Tsepelev |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2025 |
| Pages: | 298 pages |
| ISBN: | 978-1-998384-58-7 (CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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STUDY OF DEEP COPPER RECOVERY FROM SLAGS UNDER CONTROLLED OXYGEN PARTIAL PRESSURE
Maral Dyussebekova1; Sergey Kvyatkovskiy1;1SATBAYEV UNIVERSITY, Almaty, Kazakhstan;
Type of Paper: Regular
Id Paper: 238
Topic: 6
Abstract:
Deep slag recovery is a critical process in the metallurgical industry to extract valuable metals from slag waste. Current literature indicates a significant knowledge gap regarding the deep reduction of slags under extremely low partial pressures of oxygen, approximately PO2<10-10 atm [1-3].
This study aims to explore the factors influencing the efficiency of metal recovery from slag, particularly focusing on the chemical composition of slag, temperature, and oxygen partial pressure [4-5]. The goal is to optimize recovery processes to enhance efficiency and reduce costs.
The research involved experimental melting of slag samples under controlled conditions, simulating autogenous melting and purging with oxygen-containing mixtures. Various analytical techniques, including X-ray phase analysis, thermal analysis, and SEM analysis, were employed to evaluate the composition and properties of the slag.
The findings demonstrate that achieving deeply reducing conditions significantly impacts the recovery of metals, particularly copper, from slag. The study reveals that the copper content can decrease from 0,93-1,54% to 0.43-0.80% after reduction treatment, highlighting the importance of controlling oxygen partial pressure and temperature during the process. Optimal conditions for reducing depletion of slags were identified, indicating a temperature of 1300 °C and a need for substantial heat input to facilitate effective reduction reactions.