Determination of the oxidation characteristics of solid copper matte particles by differential scanning calorimetry and thermogravimetric analysis

M. Pérez-Tello*, H. Y. Sohn, J. Löttiger

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

An investigation of the oxidation reactions of two industrial copper mattes was performed using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) at heating rates of 20°C and 8°C/min, respectively. The temperature of incipient reaction, the total exothermic and endothermic heats of reaction and the weight change during the oxidation process were measured as functions of the oxygen concentration in the oxidizing gas, matte grade and matte particle size. The temperatures of incipient reaction measured from the DSC experiments were found to increase monotonically with all three input variables. TGA experiments showed that Cu2O and CuO·CuSO4 are fanned before the complete oxidation of Cu2S to CuO.

Original languageEnglish
Article number98-334
Pages (from-to)1-7
Number of pages7
JournalMinerals and Metallurgical Processing
Volume16
Issue number2
DOIs
StatePublished - 1999
Externally publishedYes

Keywords

  • Copper matte
  • Differential scanning calorimetry
  • Flash converting
  • Thermogravimetry

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