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
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.