Process for making manganous sulphate solution.

摘要

The present invention describes a method of making manganous sulphate solution with low level impurity of potassium from high potassium ores which comprises adding the reduced ore to spent electrolyte containing ferric ions and digesting same at pH 1-2 and temperature of 60-90 DEG C for 1-4 hours, and if desired thereafter again adding reduced ore to the digested product till pH is raised to 4-6.