Abstract
Investigations on extraction of manganese from ferromanganese slag, a waste product from a local ferroalloy industry, were carried out using sawdust as a reducing agent. Leaching of manganese was done with sulphuric acid. The effects of particle size, stirring speed, contact time, acid concentration, temperature and dosage of reductant were studied. Based on the experimental results, the recovery of manganese increased with decreasing particle size. Optimum values of acid concentration, stirrer speed and contact time were obtained for realizing maximum recovery of manganese. With the addition of reductant, there is a significant increase in the yield of manganese.
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