The application of electrolytic manganese as a substitute ferro alloy

Abstract

INDIA has got vast deposits of high grade and I low grade manganese ores which are among the most important minerals of the country. High grade ores, which are mined anuually to the extent of more than a million tons , are generally exported or utilised for the production of standard grade ferromanganese. Investigations have been undertaken in N.M.L. and other places in India to upgrade these low grade manganese ores by different methods of beneficiation' and to utilise them for producing standard grade ferromanganese. National Metallurgical Laboratory has also developed a method to produce electrolytic mang-anese from low grade ores.2 4 Electromanganese is now being produced at the rate of 50 kg per day in one cell in the pilot plant set up in the laboratory. This manganese is being utilised for producing nickel-free stainless steel which has already been developed in N.M.L. and also for other experimental purposes, in addition to a portion of the same being supplied to defence and other industries.