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Investigation of phase transformations in mill scales for the purification process

  • Autchariya Boontanom , Thitinun Ungtrakul , Prae Chirawatkul und Piyada Suwanpinij
Veröffentlicht/Copyright: 28. Mai 2019
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Materials Testing
Aus der Zeitschrift Materials Testing Band 61 Heft 6

Abstract

For the present contribution phase transformations in primary and secondary mill scales discarded from a hot strip mill have been investigated by using synchrotron X-ray absorption spectroscopy and thermal analysis methods. Phase transformations in the scales are influenced by calcination parameters such as temperature, heating rate and isothermal interval. Magnetite, a highly interesting iron oxide for its availability in wide ranges of applications, increases its fraction after calcination at 673 K at a heating rate of 5.38 K × s−1. This is confirmed by both characterization techniques. The calcined primary scale is found almost unchanged due to the existing predominant hematite phase. However, the additional promotion of hematite occurs at a longer isothermal calcination period at 1073 K. The majority of the results corresponded to the literature data and corroborate the assumption for a further purification process of industrial iron oxide by-products.

*Correspondence Address, Associate Prof. Dr.-Ing. Piyada Suwanpinij, The Sirindhorn International Thai-German, Graduate School of Engineering (TGGS), King Mongkut's University of Technology, North Bangkok (KMUTNB), Bangkok, Thailand., E-mail:

Autchariya Boontanom, born 1993, received her BEng degree in Electrical Engineering at King Mongkut's University of Technology North Bangkok (KMUTNB), Thailand. She is currently pursuing her Master's degree in Materials and Production Engineering at the Sirindhorn International Thai-German Graduate School of Engineering (TGGS) with a research topic in materials characterization.

Thitinun Ungtrakul, born 1983, finished his BSc degree in Industrial Chemistry and accomplished his MSc in Materials Science at King Mongkut's University of Technology North Bangkok (KMUTNB), Thailand. He works at the Sirindhorn International Thai-German Graduate School of Engineering (TGGS) as a researcher focusing in polymers and composites.

Dr. Prae Chirawatkul, born 1983, achieved her BSc degree in Physics at Khon Kaen University, Thailand, and her PhD in Physics at the University of Bath, UK. She has long standing experience in time-resolved X-ray absorption spectroscopy (TRXAS) and small-angle X-ray scattering (SAXS) using a synchrotron X-ray while working as a beamline scientist and a project head responsible at the Synchrotron Light Research Institute (SLRI). She also worked in a Postdoctoral position at 9A-USAXS beamline, Pohang Accelerator Laboratory, South Korea. Currently, she works as an acting beamline manager at the BL1.1 W Multi-purpose X-ray technique beamline at the SLRI in Nakhon Rachasima, Thailand.

Associate Prof. Dr.-Ing. Piyada Suwanpinij, born 1980, achieved her BEng degree in Metallurgical Engineering at Chulalongkorn University, Thailand, and her MMet in Advanced Metallurgy at the University of Sheffield, UK. She received her doctoral degree in Ferrous Metallurgy at RWTH Aachen University in Germany. She has experience in the modeling of phase transformation and characterization of high strength steel as well as other metals. The application of synchrotron radiation for material characterization is one of her feature interests. Currently, she is a lecturer at the The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok (KMUTNB), Bangkok, Thailand.

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Published Online: 2019-05-28
Published in Print: 2019-06-01

© 2019, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Inhalt/Contents
  2. Contents
  3. Fachbeiträge/Technical Contributions
  4. Investigation of phase transformations in mill scales for the purification process
  5. Exposure response function for a quantitative prediction of weathering caused aging of polyethylene
  6. Mechanical properties characterization of resistance spot welded DP1000 steel under uniaxial tensile tests
  7. Corrosion failure analysis of a perforated F32 reactor
  8. Prediction of mechanical properties of Al6061 metal matrix composites reinforced with zircon sand and boron carbide
  9. Tribological behavior of a hydrostatically extruded ultra-fine grained Ti-13Nb-13Zr alloy
  10. Characterization of boronized AISI 1050 steel and optimization of process parameters
  11. Experimental investigation on mechanical properties of AA7075-AlN composites
  12. Modeling of machining parameters for MRR and TWR in EDM characteristics on Al/10 wt.-% TiB2 composites
  13. Artificial neural network approach to predict ion nitrided case depth and surface hardness of AISI 4340 steel
  14. Theoretical and experimental investigation of stress distribution in a crane hook
  15. Mechanical properties, degradation and flue gas analysis of basalt and glass fiber reinforced recycled polypropylene
  16. Corrosion behavior of a precipitation hardened Ni–Cr–Co–Mo alloy under partial slagging coal gasification conditions
  17. Effect of different loading systems on acousto-ultrasonic characteristics of concrete under axial compression
https://doi.org/10.3139/120.111347

Artikel in diesem Heft

  1. Inhalt/Contents
  2. Contents
  3. Fachbeiträge/Technical Contributions
  4. Investigation of phase transformations in mill scales for the purification process
  5. Exposure response function for a quantitative prediction of weathering caused aging of polyethylene
  6. Mechanical properties characterization of resistance spot welded DP1000 steel under uniaxial tensile tests
  7. Corrosion failure analysis of a perforated F32 reactor
  8. Prediction of mechanical properties of Al6061 metal matrix composites reinforced with zircon sand and boron carbide
  9. Tribological behavior of a hydrostatically extruded ultra-fine grained Ti-13Nb-13Zr alloy
  10. Characterization of boronized AISI 1050 steel and optimization of process parameters
  11. Experimental investigation on mechanical properties of AA7075-AlN composites
  12. Modeling of machining parameters for MRR and TWR in EDM characteristics on Al/10 wt.-% TiB2 composites
  13. Artificial neural network approach to predict ion nitrided case depth and surface hardness of AISI 4340 steel
  14. Theoretical and experimental investigation of stress distribution in a crane hook
  15. Mechanical properties, degradation and flue gas analysis of basalt and glass fiber reinforced recycled polypropylene
  16. Corrosion behavior of a precipitation hardened Ni–Cr–Co–Mo alloy under partial slagging coal gasification conditions
  17. Effect of different loading systems on acousto-ultrasonic characteristics of concrete under axial compression
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