Development of Process for Production of Chemical Manganese Dioxide (OLP-0055)

Abstract

Manganese is the fourth largest consumed metal and is used in a variety of industries; from alloy and steel to batteries and catalysts. The most common application of manganese dioxide is battery sector where it is used as a depolarizer material. With the increasing demand for electronic consumer goods, the demand for portable batteries is growing steadily so also demand for manganese dioxide (7% per annum). At present most of the manganese dioxides consumed in various non-metallurgical sectors are produced through electrochemical route, which is often costly as well as unable to deliver products with desired quality. Production of manganese dioxide through chemical route seems promising. The aim of the present project is to develop a complete flow-sheet for production of manganese dioxide from low as well as high grade Mn-ores through chemical route. The conceived flow-sheet will consist of pre-treatment – leaching –leach liquor purification – precipitation – calcination and/or chemical/hydrothermal oxifdation route to produce desired grade manganese dioxide suitable for possible battery applications.