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- W2275268410 abstract "We investigated the reduction leaching process of manganese dioxide ore using black locust as reductant in sulfuric acid solution. The effect of parameters on the leaching efficiency of manganese was the primary focus. Exper- imental results indicate that manganese leaching efficiency of 97.57% was achieved under the optimal conditions: weight ratio of black locust to manganese dioxide ore (WT) of 4:10, ore particle size of 63 μm, 1.7 mol·L -1 H2SO4, liquid to solid ratio (L/S) of 5:1, leaching time of 8 h, leaching temperature of 368 K and agitation rate of 400 r·min -1 . The leaching rate of manganese, based on the shrinking core model, was found to be controlled by inner diffusion through the ash/inert layer com- posed of associated minerals. The activation energy of reductive leaching is 17.81 kJ·mol -1 . To conclude the reaction mechanism, XRD analysis of leached ore residue indicates manganese compounds disappear; FTIR characterization of leached residue of black locust sawdust shows hemicellulose and cellulose disappear after the leaching process." @default.
- W2275268410 created "2016-06-24" @default.
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- W2275268410 date "2015-08-01" @default.
- W2275268410 modified "2023-09-23" @default.
- W2275268410 title "Reduction Leaching of Manganese Dioxide Ore Using Black Locust as Reductant in Sulfuric Acid Solution" @default.
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- W2275268410 doi "https://doi.org/10.9713/kcer.2015.53.4.509" @default.
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