Leaching of manganese ores using sawdust as a reductant |
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| Affiliation: | 1. School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran;1. College of Chemical Engineering, Xiangtan University, Xiangtan, Hunan 411105, China;2. School of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China;1. Sharif University Technology (SUT), Azadi Avenue, N-1458889694, Tehran, Iran;2. Technical University Bergakademie Freiberg, Gustav-Zeuner-Str. 5, 09599 Freiberg, Germany;3. Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway |
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| Abstract: | In this study sawdust was used as reductant for sulphuric acid leaching of manganese ore. Effects of pulp density, amount of acid, temperature, particle size of ore and amount of sawdust were studied. Manganese extraction of ∼98% was achieved under the conditions: leaching time 8 h, 5% H2SO4 (v/v), 10% pulp density, 90 °C and 5% sawdust (w/w), i.e. 0.5 g/g ore. Other Mn containing materials like low grade manganese ore, manganese nodule and Mn-nodule leach residues were tested and all these materials responded well giving more than 98% Mn extraction. |
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