Method for processing manganese containing material

Abstract

According to an example aspect of the present invention, there is provided a method for processing a manganese containing material comprising: a) leaching the manganese containing material using sulfuric acid and hydrogen peroxide to produce a first process solution comprising manganese sulfate, which first process solution is filtrated, b) measuring conductivity of the first process solution at a temperature, c) determining concentration of manganese based on the measured conductivity of the first process solution at the temperature, and a correlation between the conductivity and the concentration, d) dosing persulfate according to the determined manganese concentration to produce a second process solution, and to precipitate at least part of manganese oxide, and e) filtering the manganese oxide, to produce a manganese depleted process liquor.

Dependencies are inferred from the claim text.