Excess of ferric iron improves copper extraction from smelter slags
Decreasing of particle size allowed to achieve better extraction of metals,
especially when FS < 53 µm
Increase of leaching time (from 3 up to 6 h) positively affects extraction of Co
and Ni, whereas none significant changes were observed for Cu
Method applied for smelter slags allowed to achieve maximum extraction of
54% (9.5 g/kg) #
Conditions of: PS < 53 µm, LT: 6 h, T: 100°C, amount of ferric chloride
5×stoichiometric were found to give optimum leaching of: Cu 54% (9.5 g/kg)
#, Ni 77% (1.8 g/kg), Co 44% (0.8 g/kg) Anand et al.
(1980)
CHAPTER 2: COPPER METALLURGICLA SLAGS- CURRENT KNOWLEDGE AND FATE:
A REVIEW