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

Authors
Perez-Tello, M Sohn, HY Lottiger, J
Citation
M. Perez-tello et al., Determination of the oxidation characteristics of solid copper matte particles by differential scanning calorimetry and thermogravimetric analysis, MIN MET PR, 16(2), 1999, pp. 1-7
Citations number
10
Categorie Soggetti
Geological Petroleum & Minig Engineering
Journal title
MINERALS & METALLURGICAL PROCESSING
ISSN journal
07479182 → ACNP
Volume
16
Issue
2
Year of publication
1999
Pages
1 - 7
Database
ISI
SICI code
0747-9182(199905)16:2<1:DOTOCO>2.0.ZU;2-B
Abstract
An investigation of the oxidation reactions of two industrial copper mattes was performed using differential scanning calorimetry (DSC) and thermograv imetric analysis (TGA) at hearing rates of 20 degrees C and 8 degrees C/min , respectively. The temperature of incipient reaction, the total exothermic and endothermic heats of reaction and the weight change during the oxidati on process were measured as functions of the oxygen concentration in the ox idizing gas, matte grade and matte particle size. The temperatures of incip ient reaction measured from the DSC experiments were found to increase mono tonically with all three input variables. TGA experiments showed that Cu2O and CuO . CuSO4 are formed before the complete oxidation of Cu2S to CuO.