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Odo, J.U
- Analysis of Dissolved Fe and Fe2O3 Summation Based on Factorial Influence of Iron Ore Mass-Input and Final Solution pH during Oxalic Acid Leaching
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Authors
Affiliations
1 Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University Awka, NG
2 Department of Metallurgical and Materials Engineering, Enugu State University of Science & Technology, Enugu, NG
1 Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University Awka, NG
2 Department of Metallurgical and Materials Engineering, Enugu State University of Science & Technology, Enugu, NG
Source
Indian Journal of Applied Engineering Research, Vol 1, No 1 (2013), Pagination: 113-126Abstract
α∑This paper presents an analysis of dissolved Fe and Fe2O3 summation based on factorial influence of iron ore mass-input and final solution pH during oxalic acid leaching. An empirical model expressed as, %ΣC<SUB>Fe+Fe2O3</SUB> = 0.1152(α/ϒ) was derived and applied as a tool for the analysis. The model indicates that dissolution of Fe and Fe2O3 is dependent on the ore mass-input and final leaching solution pH measured during the leaching process. It was observed that the validity of the model is ischolar_mained on the expressions, %Fe = N(α/ϒ), %Fe2O3 = NC(α/ϒ) and %∑C<SUB>Fe + Fe2O3</SUB> = N∑(α/ϒ) where both sides of each relationship are correspondingly approximately almost equal. The maximum deviation of the modelpredicted dissolved %ΣC<SUB>Fe + Fe2O3</SUB> values from the corresponding experimental values was found to be 13.33% which is quite within the acceptable range of deviation limit of experimental results. Statistical analysis of the derived experimental and model-predicted summed dissolved concentrations of Fe and Fe2O3 (%ΣC<SUB>Fe + Fe2O3</SUB> ) for each value of ore mass-input and final solution pH considered shows standard errors of 0.0216&0.0212% and 0.0321&0.0274% respectively. The summed dissolved concentrations of Fe and Fe2O3 (%ΣC<SUB>Fe + Fe2O3</SUB> ) per unit mass of iron oxide ore input evaluated from experimental and model-predicted results are 0.0048% g<SUP>-1</SUP> and 0.0045% g<SUP>-1 </SUP>respectively, indicating proximate agreement.Keywords
Analysis, Dissolved Fe And Fe2O3 Summation, Oxalic Acid, Iron Oxide Ore, Leaching
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