Physical chemistry of copper smelting slags and copper losses at the Paipote smelterPart 1 – Thermodynamic modelling

Cardona, N; Coursol, P.; Mackey, P. J.; Parra, Roberto

doi:10.1179/000844311x13112418194761

Cited by 43 publications

(48 citation statements)

References 31 publications

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“…The composition, mineralogy and morphology of copper slags can be different due to various types of original ore, previous pyrometallurgical processes and cooling procedures. Extensive research has been performed to characterize the chemical, phase and granulometric composition of copper slag in view of metal recovery through various techniques, such as inductively coupled plasma (ICP) [11], scanning electron microscopy (SEM), X-ray diffraction (XRD) [1,7], micro Raman spectroscopy [9], atomic absorption spectroscopy (AAS), electron probe micro-analyzer (EPMA) [12], and thermodynamic modelling [13], sieving and laser diffraction [5]. However, most of these studies investigated the composition and mineralogy of the slags without associating this information with the subsequent recovery process of valuable metal, such as leaching and flotation.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Copper Slag

et al. 2013

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Copper slag can be treated as a secondary resource since it usually contains a substantial amount of copper and other valuable metals. Characterization of the slags to determine the expected metal recovery is essential for the design of separation flow sheets. In this study, the chemical and mineralogical composition of a copper slag from El Teniente, Chile were characterized. The copper content of the fayalite based slag is around 0.87 wt% which is higher than for certain copper ores. Copper exists as sulfides in the form of droplets in the slag. The content and particle size distribution of the major sulfide phases (bornite, chalcopyrite and chalcocite) were quantified using analytical scanning electron microscopy (QEMSCAN). The copper bearing particles have a wide particle size distribution from a few microns up to mm level. Large copper bearing particles (> 100 μm) are composed mainly of bornite and chalcocite and tend to accumulate in the lower part of the slag layer. As characterized with X-ray computed tomography (CT), around 70 volume% of copper value exist in these large copper bearing particles.

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Section: Introductionmentioning

confidence: 99%

Characterization of Copper Slag

et al. 2013

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“…The main influencing factors are temperature, oxygen partial pressure, [2,[5][6][7] chemical activity of the metal, [2] and composition of the slag and matte. [2,[5][6][7] Mechanically entrained metal refers to entrapped or floating unsettled droplets. In primary copper production, both metallic and matte droplets are entrained, while in secondary copper production, these losses are mainly metallic copper droplets.…”

Section: Introductionmentioning

confidence: 99%

Investigation of High-Temperature Slag/Copper/Spinel Interactions

Wilde

Bellemans

Campforts

et al. 2016

Metall Mater Trans B

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“…The thermodynamic property of each component was taken from the FactSage™ database; the molten phases (copper, matte and slag) and the solubility of copper in slag were described using the modified quasichemical model [2,3], with the sulfide solubility according to the Kang and Pelton quadruplet approximation [4]. A detailed methodology for the slag calculations has been described in Cardona et al [5]. The following parameters were fixed for each computation according to the reference values given in Table I The chemical activities of CU2S and FeS in slag were fixed according to the average matte composition considered for each slag (Table I).…”

Section: Methodology and Fundamental Considerationsmentioning

confidence: 99%