Mechanism and thermodynamics of floating slimes formation

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The global copper industry faces a technological challenge to develop processing schemes for more complex and impure ores and concentrates. Group 15 elements (As, Sb, and Bi) represent impurities that are troublesome both in terms of environmental impact and metallurgical processing. The so-call "dirty" copper concentrates are either unacceptable for smelting and refining or incur high penalties. The behavior of the Group 15 elements is of critical importance in maintaining product quality and process performance. During copper electrorefining, these impurities are released to the electrolyte by electrochemical dissolution of the anode. Depending mainly on temperature, concentration, and oxidation state these elements can spontaneously coprecipitate from the electrolyte. Some of these precipitates are referred to as floating slimes and their formation can have extremely detrimental effects on cathode purity. In this paper, the mechanism of floating slimes formation will be discussed and the fundamental thermochemistry will be reviewed and analyzed in relation to solubility properties.

Original languageEnglish (US)
Title of host publicationTMS Annual Meeting
Pages101-112
Number of pages12
StatePublished - 2012
EventT.T. Chen Honorary Symposium on Hydrometallurgy, Electrometallurgy and Materials Characterization - TMS 2012 Annual Meeting and Exhibition - Orlando, FL, United States
Duration: Mar 11 2012Mar 15 2012

Other

OtherT.T. Chen Honorary Symposium on Hydrometallurgy, Electrometallurgy and Materials Characterization - TMS 2012 Annual Meeting and Exhibition
CountryUnited States
CityOrlando, FL
Period3/11/123/15/12

Fingerprint

floating
Copper
Thermodynamics
copper
thermodynamics
Electrolytes
electrorefining
electrolytes
Impurities
Thermochemistry
smelting
impurities
thermochemistry
Smelting
refining
Processing
penalties
Ores
Refining
Environmental impact

Keywords

  • Antimony
  • Arsenic
  • Bismuth
  • Copper refining
  • Floating slimes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

Cite this

Mechanism and thermodynamics of floating slimes formation. / Hiskey, J Brent.

TMS Annual Meeting. 2012. p. 101-112.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hiskey, JB 2012, Mechanism and thermodynamics of floating slimes formation. in TMS Annual Meeting. pp. 101-112, T.T. Chen Honorary Symposium on Hydrometallurgy, Electrometallurgy and Materials Characterization - TMS 2012 Annual Meeting and Exhibition, Orlando, FL, United States, 3/11/12.
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