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Study On Decomposition Of Goethite/Siderite In Thermal Modification Through Xrd, Sem And Tga Measurements

Author

Listed:
  • SHAOXIAN SONG

    (School of Resource and Environmental Engineering, Wuhan University of Technology, Luoshi Road 22, Wuhan, Hubei Province 430070, P. R. China)

  • FEIFEI JIA

    (Instituto de Metalurgia, Universidad Autónoma de San Luis Potosí, Av. Sierra Leona 550, San Luis Potosí, C. P. 78210, Mexico)

  • CHANGSHENG PENG

    (College of Environmental Science and Engineering, Ocean University of China, Qingdao, Shandong Province, 266100, P. R. China)

Abstract

The decomposition of goethite and goethite/siderite concentrates into hematite with thermal modification was studied through the measurements of X-ray diffraction (XRD), scanning electronic microscope (SEM) and thermal gravimetric analysis (TGA). The experimental results showed that goethite decomposed into hematite directly at around 300°C without any intermediate phase and the decomposition of siderite completed at 500°C. Nanoscale granular structures were observed in the thermally treated products. It deserves highlighting that the decomposition processes proceeded from surfaces into bulks.

Suggested Citation

  • Shaoxian Song & Feifei Jia & Changsheng Peng, 2014. "Study On Decomposition Of Goethite/Siderite In Thermal Modification Through Xrd, Sem And Tga Measurements," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 21(01), pages 1-6.
    • Handle: RePEc:wsi:srlxxx:v:21:y:2014:i:01:n:s0218625x1450019x
    DOI: 10.1142/S0218625X1450019X
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