首页|Evolution of the structure and viscosity of copper slag during metallization-reduction

Evolution of the structure and viscosity of copper slag during metallization-reduction

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? 2022 Elsevier B.V.Oxygen-enriched smelting is accompanied by the precipitation of magnetite due to fayalite-based slag systems, which deteriorates the properties of slag and increases copper content in Cu slag. In this study, the evolution of the structure and viscosity of slag during metallization-reduction were investigated. The reduction process of the Fe-containing phase in Cu slag can be divided into two steps (Fe3O4→FeO, FeO→Fe) as coal dosage increases. In Fe3O4→FeO, the solid-phase particle content in Cu slag decreases, which simplifies the macromolecular structures, thus decreasing the viscosity of Cu slag. In FeO→Fe, the solid-phase particle content in Cu slag increases because of the formation of metallic Fe and Cu-Fe alloy particles. The macromolecular structures dominated by SiO4 and AlO4 tetrahedra become complex, increasing the viscosity of the Cu slag.

Alloy particlesMetallization-reductionStructureViscosity

Xiao W.、Zhou S.、Wei Y.、Li B.、Wang H.、Yao S.

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State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and Technology

YCC Southwest Copper Branch

2022

Journal of Alloys and Compounds

Journal of Alloys and Compounds

EISCI
ISSN:0925-8388
年,卷(期):2022.903
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