A Comprehensive Utilization Process for Black manganese-silver Ores by Pyrite Reducing Method

摘要

On a 5 kg bench scale, the separating of Mn-Ag from black managanese-silver ores by pyrite reducing method was investigated. Leached Mn content of 98.3/100 (mass fraction) along with silver loss of 1.5/100 is achieved. The purific- ation of solution by the precipitation method was effectively used. Chemical grade r-MnO_2 with TMn content of 60.13/100 (mass fraction) and MnO-2 content of 92.28/100 (mass fraction) is obtained. Mn recovery efficiency is 94.04/100.