The dissolution of magnetite in acidic oxalate solutions has been studied u
nder various experimental conditions. The effects of temperature, pH, oxala
te and ferrous ion concentration in solution were extensively examined. The
dissolution of the magnetite is highly dependent on temperature and the pH
of the solution, but is practically independent of the oxalate concentrati
on. The addition of ferrous ions in the solution has a positive effect on t
he dissolution rate, especially at lower temperatures and higher pH values.