The Copper Losses in the Slags From the El Teniente Process

Imris, I.; Rebolledo, S.; Sànchez, Miquel; Castro, Germán R.; Achurra, G.; Hernández, Fidel de la Cruz Hernández

doi:10.1179/cmq.2000.39.3.281

Cited by 27 publications

(14 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to Warczok et al (2002) slags cleaned by this procedure also contain elevated magnetite contents. The occurrence of a fayalite phase was also reported for copper slags analyzed by Imris et al (2000). We conclude from the XRF and XRD analysis that about half of the Fe in the slag material used in this study was present in the fayalite phase and the other half in the magnetite phase.…”

Section: Particle Characterizationsupporting

confidence: 57%

See 1 more Smart Citation

In situ investigation of dissolution of heavy metal containing mineral particles in an acidic forest soil

Birkefeld

Schulin

Nowack

2006

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

Section: Particle Characterizationsupporting

confidence: 57%

“…The mineral composition of the copper smelting slag was typical for smelter slags (Imris et al, 2000). Magnetite and fayalite were the main phases (Table 1).…”

Section: Particle Characterizationmentioning

confidence: 99%

In situ investigation of dissolution of heavy metal containing mineral particles in an acidic forest soil

Birkefeld

Schulin

Nowack

2006

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

“…Imris et al 7,8 in studies at the Caletones smelter identified 'copper prills' and chalcocite (b-Cu 2 S) inclusions in TC slag samples and chalcocite (b-Cu 2 S) in slag samples from the slag cleaning furnace. The total copper dissolved in TC slag was estimated based on the copper level in flotation tailings (0?80-1?05 wt-%Cu) from laboratory slag flotation experiments.…”

Section: Introductionmentioning

confidence: 97%

“…In addition, during slag solidification, a part of the soluble copper precipitates out as metallic copper and/or as a matte phase. [4][5][6][7] On the other hand, entrained matte solidifies as mixtures of copper sulphide and/or copper iron sulphide phases having a stoichiometry depending on the composition of the entrained matte. [8][9][10][11] With high grade copper mattes, the particles solidify as rich Cu 22x S solid solutions such as chalcocite and also as digenite.…”

Section: Introductionmentioning

confidence: 99%

The Physical Chemistry of Copper Smelting Slags and Copper Losses at the Paipote SmelterPart 2 – Characterisation of industrial slags

Cardona

Coursol²,

Vargas³

et al. 2011

Canadian Metallurgical Quarterly

View full text Add to dashboard Cite

The results of an investigation on copper losses in industrial slag from the Teniente converter (TC) and from the electrical slag cleaning furnace (EF) at the Paipote smelter in Chile are presented. Slag samples from each furnace were characterised using chemical and mineralogical techniques. The distribution of the various phases, including entrained matte, was quantified by semi-automatic image analysis. The level of soluble copper was measured by EPMA on samples cooled at a fast cooling rate. The phases found in the slag samples after such cooling are in agreement with thermodynamic calculations of the solidification process. Two types of magnetite crystals were observed in the TC slag samples: magnetite formed during slag solidification (type II) and magnetite which was present as a solid in the melt (type I). The portion of magnetite (type I) was found negligible in the EF slag samples. Sulphide phases were identified in the slag samples as solidified entrained matte, and sulphides present via ex-solution from the liquid slag during solidification. In the case of the TC, the present study has shown that with y4?6 wt-%Cu in slag, about 87% was present as entrained matte. For the electrical furnace, the amount of entrained matte represents some 25% of the copper when the average copper level in EF slag samples was y0?74 wt-%Cu.Les ré sultats d'une é tude sur les pertes en cuivre dans les laitiers du convertisseur Teniente (TC) et du four é lectrique (EF) de nettoyage du laitier de la fonderie de Paipote au Chili sont pré senté s. On a caracté risé des é chantillons de laitier de chaque four en utilisant des techniques chimiques et miné ralogiques. On a quantifié la distribution des diverses phases, incluant la matte entraîné e, au moyen de l'analyse d'image semi-automatique. On a mesuré le niveau de cuivre soluble par EPMA sur des é chantillons refroidis à un taux rapide de refroidissement. Les phases retrouvé es dans les é chantillons de laitier aprè s un tel refroidissement sont en accord avec les calculs thermodynamiques du processus de solidification. On a observé deux types de cristaux de magné tite dans les é chantillons de laitier du TC: la magné tite formé e lors de la solidification du laitier (type II) et la magné tite pré sente sous forme solide dans le bain (type I). On a trouvé que la portion de magné tite (type I) é tait né gligeable dans les é chantillons de laitier du EF. Les phases de sulfure provenant de la matte entraîné e solidifié e et les phases de sulfure formé es par ex-solution du laitier durant la solidification ont été identifiées dans les é chantillons industriels. Dans le cas du convertisseur Teniente, l'é tude pré sente a montré qu'avec ,4?6 wt-% de Cu dans le laitier, environ 87% du cuivre était pré sent sous la forme de matte entraînée. Pour le four é lectrique, la quantité de matte entraîné e repré sente quelque 25% du cuivre lorsque le niveau de cuivre moyen dans les é chantillons de laitier du EF était de ,0?74 wt-%Cu.

show abstract

“…The first experiments pointed towards an important role of interfacial energies in this interaction. The attachment is also believed to be related with redox reactions between the metal, the slag and the solid particles [7,8]. Many experiments would be needed to investigate the influence of all parameters and, even though the microstructure and composition can be investigated, it would be very difficult to study the effect of each parameter individually because it is virtually impossible to keep the others constant.…”

Section: Introductionmentioning

confidence: 99%

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

View full text Add to dashboard Cite

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.

show abstract

The Copper Losses in the Slags From the El Teniente Process

Cited by 27 publications

References 6 publications

In situ investigation of dissolution of heavy metal containing mineral particles in an acidic forest soil

In situ investigation of dissolution of heavy metal containing mineral particles in an acidic forest soil

The Physical Chemistry of Copper Smelting Slags and Copper Losses at the Paipote SmelterPart 2 – Characterisation of industrial slags

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

Contact Info

Product

Resources

About