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Experimental Characterization of Sintering Mechanism using Optical Dilatometer and Push Rod Dilatometer: A Comparative Study
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering.ORCID iD: 0000-0002-0873-0476
Indian Institute of Technology Bombay.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering.ORCID iD: 0000-0002-2358-7719
LKAB, Research & Development.
2017 (English)Conference paper, Oral presentation only (Refereed)
Abstract [en]

In Iron and Steel industries, sintering process is used in producing agglomerates either as iron ore sinter or as heat hardened iron ore pellets. It is also used extensively used in producing ceramic or metallic powder compacts as well as in additive manufacturing processes. The thermal excursion of the green powder compact determines the extent of sintering and its subsequent evolution of desired properties. Therefore, it is necessary to understand the sintering phenomena for a single green compact. Sintering phenomena of iron ore pellets – magnetite and hematite are investigated in this study using two types of dilatometers. Optical Dilatometer has been used to study in-situ intrinsic sintering kinetics of pellets experimentally at different temperatures, and compared with that of widely used Push Rod Dilatometer. Unlike optical dilatometer, push rod dilatometer uses a load to keep the rod in contact with the compact. Interestingly, it has been found that the intrinsic sintering characteristics changes with the load imposed. These findings can also be extended to other materials manufactured by sintering phenomenon. Understanding on sintering mechanisms of material compacts with and without load will help in evaluating kinetic parameters considering the conditions compact encounter in further applications, and design accordingly.

Place, publisher, year, edition, pages
San Diego, California, USA, 2017.
Keyword [en]
Sintering Mechanism, Optical Dilatometer, Push-Rod Dilatometer
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-67948OAI: oai:DiVA.org:ltu-67948DiVA, id: diva2:1190849
Conference
International Conference on Sintering, San Diego, Calif., November 12-16, 2017
Available from: 2018-03-15 Created: 2018-03-15 Last updated: 2018-03-29Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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  • de-DE
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  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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Output format
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