METHOD OF EXTRACTING MANGANESE FROM MANGANESE-BEARING RAW STOCK

摘要

FIELD: metallurgy.SUBSTANCE: method of processing manganese oxide materials containing heterovalent manganese oxides comprises leaching crushed raw stock by sulfuric acid aqueous solution in the presence of bivalent iron sulphate, iron precipitation and manganese extraction from productional solution. Note here that said leaching is performed on adding reducing agent in the form of metal iron or iron sulphate (Fe) at 60-95°C for 60-300 min. Leaching is carried out at initial concentration of HSOin leaching solution of up to 100 g/dmand final acidity in productional solution relative to hydrogen ion exponent pH<2.EFFECT: higher manganese yield.1 tbl