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Modelling and experimental studies of diffusivity of sulfur and its relevance in observing surface oscillations at the slag metal interface through X-ray imaging
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
2017 (English)In: Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016, Springer, 2017, 581-587 p.Conference paper (Refereed)
Abstract [en]

A generic model was conceived for predicting the diffusion coefficient of species in slag. The diffusion coefficient of sulfur in CaO-Al2O3-SiO2slag with low silica was measured using a combinational technique of the generic model and experiments. The uniqueness of the experiments was in the method of collecting samples. Another milestone was that the diffusion coefficient of sulfur in the slag was obtained through the sulfur levels in the metal (silver). Later the order of magnitude of the diffusion coefficient of sulfur in slag was used to estimate the time required for sulfur to reach the slag- metal interface of an iron drop immersed in CaO-Al2O3-FeO-SiO2slag. This estimated time for arrival of sulfur at the interface was comparable to the actual observation. The current paper describes the challenges in measuring the diffusion coefficient of sulfur. It also describes the time estimates calculated based on the X-ray image for sulfur to reach the slag-metal interface.

Place, publisher, year, edition, pages
Springer, 2017. 581-587 p.
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-211900Scopus ID: 2-s2.0-85024118905ISBN: 9783319486253 OAI: oai:DiVA.org:kth-211900DiVA: diva2:1131653
Conference
10th International Conference on Molten Slags, Fluxes and Salts, MOLTEN 2016, Seattle, United States, 22 May 2016 through 25 May 2016
Note

QC 20170815

Available from: 2017-08-15 Created: 2017-08-15 Last updated: 2017-08-15Bibliographically approved

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