The Influence of Calcination Temperature on Quantitative Phase of Hematite from Iron Stone Tanah Laut

Abstract:

This research aims to form particles of hematite (α-Fe₂O₃) with a basis of mineral iron ore Fe₃O₄ from Tanah Laut. Magnetite Fe₃O₄ was synthesized using co-precipitation method. Further characterization using X-ray fluorescence (XRF) to obtain the percentage of the elements, obtained an iron content of 98.51%. Then characterized using thermo-gravimetric analysis and differential scanning calorimetry (TGA-DSC) to determine the calcination temperature, that at a temperature of 445 °C mass decreased by 0.369% due to increase in temperature. Further Characterization of X-ray diffraction (XRD) to determine the phases formed at the calcination temperature variation of 400 °C, 445 °C, 500 °C and 600 °C with a holding time of 5 hours to form a single phase α-Fe₂O₃ hematite. Testing with a particle size analyzer (PSA) to determine the particle size distribution, where test results indicate that the α-Fe₂O₃ phase of each having a particle size of 269.7 nm, 332.2 nm, 357.9 nm, 412.2 nm. The best quantity is shown at a temperature of 500 °C to form the hematite phase. This result is used as the calcination procedure to obtain a source of Fe ions in the manufacture of Lithium Ferro Phosphate.

• Periodical: Advanced Materials Research (Volume 1112)
• Pages: 489-492
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1112.489
• Online since: July 2015
• Authors: Ali Mufid, Mochammad Zainuri
• Keywords: Calcination, Co-Precipitation, PSA, TGA-DSC, XRD, XRF

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