The Cu−O (Copper-Oxygen) system

Neumann, J.; Zhong, T.; Chang, Y. A.

doi:10.1007/bf02868948

Cited by 96 publications

(66 citation statements)

References 16 publications

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“…A metal droplet is defined as the connected domain for which 0.71 < x M -φ x S holds. This threshold provides values of metallic fractions closest to those predicted by the lever rule for several initial supersaturations as tested for systems without a particle after a long simulation time of 50 [23,24] . It should be mentioned that the Gibbs-Thomson effect with these parameters has only a limited influence on the equilibrium composition.…”

Section: Post-processingmentioning

confidence: 60%

Phase field modelling of the attachment of metallic droplets to solid particles in liquid slags: Influence of interfacial energies and slag supersaturation

Bellemans

Moelans

Verbeken

2015

Computational Materials Science

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Several pyrometallurgical industries encounter production losses due to the attachment of metallic droplets to solid particles in slags. Although scarce, due to experimental challenges, the available results indicate the importance of interfacial energies.Simulations based on a phase field model potentially circumvent this lack of experimental data and allow a more systematic insight into the observed phenomenon.In the present work, a phase field model for solid-liquid binary systems with spinodal decomposition in the liquid is implemented to simulate the metal droplet formation and growth in slags with non-reacting solid particles. The simulations allowed evaluating the influence of the interfacial energies and initial slag composition on the attachment of metallic droplets to solid particles as a function of time for four different regimes, namely no wettability of the metal on the particle, low wettability, high wettability and full wettability.

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Section: Post-processingmentioning

confidence: 60%

Phase field modelling of the attachment of metallic droplets to solid particles in liquid slags: Influence of interfacial energies and slag supersaturation

Bellemans

Moelans

Verbeken

2015

Computational Materials Science

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“…According to the phase diagram of the Cu-O system, the solubility of O in liquid copper at 1423 K is 1.06 mass pct when liquid copper is equilibrated with solid Cu 2 O. [25] Therefore, it can be considered that the source of oxygen for the oxidation reaction of Sb of copper is mainly due to the decomposition reaction of Cu 2 O formed in flux, as shown in Eqs. [16] through [19].…”

Section: Mechanism Of Removal and Recycling Of Sb From Liquid Coppermentioning

confidence: 99%

Removal and Recycling of Antimony from Liquid Copper by Using CuCl-CaO Fluxes at 1423 K

Cui

Matsuura

Hamano

et al. 2007

Metall Mater Trans B

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“…The solubility of copper in the slag has been reported in numerous publications, which can be divided into two major The activities of oxygen in liquid copper were reviewed and assessed by Schmid [47] and Neumann et al [48] The two groups: studies in the sulfur-free Cu 2 O-CaO-FeO-Fe 2 O 3 -SiO 2 system [50][51][52][53][54][55][56][57][58][59][60][61] and laboratory slag-matte equilibrium ij Cu-O parameters of the quasichemical model listed in Table I were used to describe these data at 1200 ЊC to 1300 ЊC.…”

Section: Cu-fe Cu-s Fe-s and Cu-fe-s Systemsmentioning

confidence: 99%

A thermodynamic database for copper smelting and converting

Degterov

Pelton

1999

Metall Mater Trans B

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The thermodynamic properties of the slag, matte, and liquid copper phases in the Cu-Ca-Fe-Si-O-S system have been critically assessed and optimized over the ranges of compositions of importance to copper smelting/converting based on thermodynamic and phase equilibria information available in the literature and using the modified quasichemical model. A thermodynamic database has been developed, which can be used for the calculation of matte-slag-copper-gas phase equilibria of interest for the production of copper. The model reproduces within experimental error limits all available experimental data on phase diagrams, matte-alloy miscibility gap and tie-lines, enthalpies of mixing, and activities of Cu and S in the matte and liquid alloy. The calculated solubilities of Cu in both Sfree slag and slag equilibrated with matte are also in good agreement with experiment under all studied conditions, such as at SiO 2 saturation, in equilibrium with Fe, Cu, or Cu-Au alloys, at fixed oxygen or SO 2 partial pressures and at different contents of CaO in the slag. Sulfide contents (sulfide capacities) of the slags are predicted within experimental error limits from the modified Reddy-Blander model, with no adjustable parameters. As an example of the application of the database, the stability field of matte/slag equilibrium is calculated, and the matte and slag compositions are plotted vs iron to silica ratio in the slag at various SO 2 pressures over this field. The matte-slag two-phase field is limited by the calculated lines corresponding to precipitation of copper, silica, and magnetite.

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The Cu−O (Copper-Oxygen) system

Cited by 96 publications

References 16 publications

Phase field modelling of the attachment of metallic droplets to solid particles in liquid slags: Influence of interfacial energies and slag supersaturation

Phase field modelling of the attachment of metallic droplets to solid particles in liquid slags: Influence of interfacial energies and slag supersaturation

Removal and Recycling of Antimony from Liquid Copper by Using CuCl-CaO Fluxes at 1423 K

A thermodynamic database for copper smelting and converting

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