Pentahydrate copper sulphate (Blue vitriol) is a copper salt used in minera
llurgy as activator reagent in concentration methods by flotation for sulph
ide ores. In this work, crystallization conditions of copper sulphate solut
ions have been determined as a function of both temperature and sulphuric a
cidity. The results obtained showed that .Cu2+ concentration in the solutio
n is mainly a direct function of the logarithm of temperature and the sulfu
ric acid concentration. The influence of Zn2+ presence in copper sulphate s
olubility has been also studied at ambient temperature. Results obtained le
d to a multiple linear regression between CU2+ concentration in the solutio
n and sulphuric acid and Zn2+ concentrations in the medium. Finally, a comp
arison between the results obtained and data available in the literature is
made.