Thermodynamic Modeling of Peirce‐Smith Converter Slag at the Chagres Smelter, Chile

Cardona, N; Mackey, P. J.; Coursol, P.; Parada, Roberto H.; Parra‐Saldívar, Roberto

doi:10.1002/9781118357002.ch16

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…In these types of models the descriptions of the chemical reactions and compositional changes are generally simplified, and may involve empirical industrial data for specific sites. Examples of models of this type are to be found in (Ng et al 2005;Coursol and Mackey 2010;Cardona et al 2012).…”

Section: Materials Handling and Macroscale Modelsmentioning

confidence: 99%

Modelling of liquid phases and metal distributions in copper converters: transferring process fundamentals to plant practice

Jak

Hidayat

Shishin

et al. 2018

Mineral Processing and Extractive Metallurgy

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The quantity and accuracy of fundamental data available on copper smelting and converting systems has greatly increased over the past several decades. Engineers need no longer rely on approximations and interpolation of chemical behaviour from idealised or simplified loworder systems. Sophisticated thermodynamic databases and dedicated thermodynamic computer platforms make it possible to predict the outcomes of complex multicomponent, multiphase reactions, and to present this information in forms that are useful for industrial practice. In the present paper a summary and review of phase equilibria data on key Cu-Fe-O-S sub-systems including Ca, Si and minor elements, is provided, as are examples of the application of thermodynamic and thermochemical calculations to the modelling of copper converting. As further information on chemical behaviour and integration with process models become available these sophisticated predictive tools and approaches will become increasingly used to improve metallurgical process design and efficiency, and to optimise the productivity of integrated copper production operations.

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Section: Materials Handling and Macroscale Modelsmentioning

confidence: 99%

Modelling of liquid phases and metal distributions in copper converters: transferring process fundamentals to plant practice

Jak

Hidayat

Shishin

et al. 2018

Mineral Processing and Extractive Metallurgy

View full text Add to dashboard Cite

show abstract

“…5,6,[10][11][12][13][14] Hence, further lowering the matte grade would not necessarily lower copper levels and may even adversely impact the copper loss in slag. The current data for the relationship between %Fe in matte and %S in slag are presented in Fig.…”

Section: Dissolved Sulfur In Slagmentioning

confidence: 99%

“…This trend is in good agreement with previous work indicating that, as is known, FeS also dissolves in the slag. 7,10,[12][13][14] At sulfur levels over 1 wt.% in slag (matte over 10 wt.% Fe), the level of soluble copper in the slag is expected to rise. In the current case, with a metallic phase present, solid metallic Fe can form if the matte contains over 12 wt.% Fe (see Fig.…”

Section: Dissolved Sulfur In Slagmentioning

confidence: 99%

Minimization of Copper Losses in Copper Smelting Slag During Electric Furnace Treatment

Coursol

Valencia

Mackey

et al. 2012

JOM

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In the quest to achieve the highest metal recovery during the smelting of copper concentrates, this study has evaluated the minimum level of soluble copper in iron-silicate slags. The experimental work was performed under slag-cleaning conditions for different levels of Fe in the matte and for a range of Fe/SiO 2 ratios in the slag. All experiments were carried out under conditions where three phases were present (copper-matte-slag), which is the condition typically prevailing in many slag-cleaning electric furnaces. The %Fe in the electric furnace matte was varied between 0.5 wt.% and 11 wt.%, and two different Fe/SiO 2 ratios in the slag were used (targeted values were 1.4 and 1.6). All experiments were performed at 1200°C. From thermodynamic considerations, from industrial experience, and from the results obtained in this study, the minimum soluble copper content in the electric furnace slag is expected to be near 0.55 wt.% Cu. This level does not account for a portion of the copper present as mechanically entrained matte/metal droplets. Taking this into account, the current authors believe an overall copper level in discard slag between 0.7 wt.% and 0.8 wt.% can be obtained with optimal operating conditions. For these conditions, the copper losses in the slag are roughly 75% as dissolved copper and 25% as entrained matte and copper. Such conditions include operating the electric furnace at metallic copper saturation, maintaining the %Fe in the electric furnace matte between 6 wt.% and 9 wt.%, not exceeding a slag temperature of 1250°C, and controlling the Fe/SiO 2 ratio in the smelting furnace slag at £1.5. In addition, magnetite reduction needs to be performed efficiently during the slag-cleaning cycle so as to maintain a total magnetite content of £7 wt.% in the discard slag. The authors further consider that under exceptionally well-controlled conditions, a copper content in electric furnace discard slag between 0.55 wt.% and 0.7 wt.% can be obtained, by minimizing entrained matte and copper solubility in the discard slag.

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Optimizing Peirce–Smith Converters Using Thermodynamic Modeling and Plant Sampling

Cardona

Mackey²,

Coursol³

et al. 2012

JOM

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Thermodynamic Modeling of Peirce‐Smith Converter Slag at the Chagres Smelter, Chile

Cited by 3 publications

References 8 publications

Modelling of liquid phases and metal distributions in copper converters: transferring process fundamentals to plant practice

Modelling of liquid phases and metal distributions in copper converters: transferring process fundamentals to plant practice

Minimization of Copper Losses in Copper Smelting Slag During Electric Furnace Treatment

Optimizing Peirce–Smith Converters Using Thermodynamic Modeling and Plant Sampling

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