Integrated experimental and thermodynamic modelling study of phase equilibria in the “CuO0.5”-PbO-AlO1.5 system in equilibrium with Cu/Pb metal

IF 4.9 2区工程技术 Q1 ENGINEERING, CHEMICAL

Minerals Engineering Pub Date : 2025-07-14 DOI:10.1016/j.mineng.2025.109620

Georgii Khartcyzov, Maksym Shevchenko, Evgenii Nekhoroshev, Evgueni Jak

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Abstract

This study investigated the phase equilibria in the “CuO_0.5”-PbO-AlO_1.5 system in equilibrium with Cu/Pb metal as part of the integrated experimental and thermodynamic modelling study of phase equilibria in the Cu-Pb-Zn-Fe-Ca-Si-Al-Mg-O-S-(As, Sn, Sb, Bi, Ag, Au, Ni, Cr, Co and Na) gas/oxide liquid/matte/speiss/ metal/solids system supporting the development and optimisation of pyrometallurgical processes. The experimental approach involved the equilibration and quenching technique followed by the electron probe X-ray microanalysis (EPMA). The resulting experimental data described the liquidus of the “CuO_0.5”-PbO-AlO_1.5 system in equilibrium with Cu/Pb metal, including corundum (Al₂O₃), PbAl₁₂O₁₉, PbAl₂O₄, Pb₉Al₈O₂₁, massicot (PbO), cuprite (Cu₂O), delafossite (CuAlO₂) and copper plumbite (Cu₂PbO₂) primary phase fields. The experiments were conducted as part of the integrated experimental and thermodynamic modelling study aimed to obtain a self-consistent set of parameters of the thermodynamic model for all phases of the “CuO_0.5”-PbO-AlO_1.5 system in equilibrium with Cu/Pb metal and its subsystems, consistent with major 20 component system. The liquidus surface of the “CuO_0.5”-PbO-AlO_1.5 system over the complete range of temperatures and concentrations was presented for the first time.

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CuO0.5 -PbO-AlO1.5体系与Cu/Pb金属平衡相平衡的综合实验与热力学模拟研究

作为Cu-Pb- zn - fe - ca - si - al - mg - o - s -（as, Sn, Sb, Bi, Ag, Au, Ni, Cr， Co和Na）气体/氧化物液体/matte/speiss/金属/固体系统相平衡的综合实验和热力学建模研究的一部分，本研究研究了CuO0.5 - pbo - alo1.5体系与Cu/Pb金属平衡的相平衡，支持火法冶金工艺的开发和优化。实验方法包括平衡和淬火技术，然后是电子探针x射线微分析（EPMA）。实验数据描述了“CuO0.5”-PbO-AlO1.5体系与Cu/Pb金属平衡时的液相场，包括刚玉（Al2O3）、PbAl12O19、PbAl2O4、Pb9Al8O21、麻质（PbO）、铜（Cu2O）、辉绿（CuAlO2）和铜铅（Cu2PbO2）初级相场。实验作为实验和热力学建模综合研究的一部分进行，旨在获得与Cu/Pb金属平衡的“CuO0.5”-PbO-AlO1.5体系及其子系统的热力学模型的自一致参数集，与20个主要组分体系一致。首次获得了在完整温度和浓度范围内的“CuO0.5”-PbO-AlO1.5体系的液相表面。

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来源期刊

Minerals Engineering 工程技术-工程：化工

CiteScore

8.70

自引率

18.80%

发文量

519

审稿时长

81 days

期刊介绍： The purpose of the journal is to provide for the rapid publication of topical papers featuring the latest developments in the allied fields of mineral processing and extractive metallurgy. Its wide ranging coverage of research and practical (operating) topics includes physical separation methods, such as comminution, flotation concentration and dewatering, chemical methods such as bio-, hydro-, and electro-metallurgy, analytical techniques, process control, simulation and instrumentation, and mineralogical aspects of processing. Environmental issues, particularly those pertaining to sustainable development, will also be strongly covered.