Synthesis And Characterization Of -ferric Oxide From Local Iron Ore In Ethiopia

Ethiopia has a huge deposits of iron ore and 𝛼-ferric oxide, (𝛼-Fe2O3) has received great interest and extensively used in agriculture, chemical industries, paint industries, as catalysts, magnetic materials, gas sensors, lithium-ion batteries and waste water treatment plants. Therefore, this study is to synthesize 𝛼-ferric oxide from local iron ore in Ethiopia. Iron ore samples has been studied from two different regions (Sekota and Axum) and characterized in geological survey of Ethiopia laboratory with the grade of 46.56% and 65.81% of iron oxide composition found from Sekota and Axum respectively. The sample from Axum was reacted with hydrochloric acid and ammonium hydroxide by fluctuating three process variables: particle size, calcination temperature and calcination time. The effect of these different particle size (0.125mm – 2mm), calcination temperature (500 – 600 °C) and calcination time (90 – 150 minutes) towards the yield of 𝛼-ferric oxide, (𝛼-Fe2O3) synthesis were investigated by using design of expert (DOE) version 12.0 software and Box-Behnken design method. Based on analysis of variance (ANOVA), the determination coefficient, R2 obtained was 0.9878. Optimization processing condition that synthesizes highest yield of 77.103 % was at particle size (

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