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Ground granulated iron silicate slag as supplementary cementitious material: Effect of prolonged grinding and granulation temperature
Luleå University of Technology, Sweden.
RISE Research Institutes of Sweden, Materials and Production, Product Realisation Methodology.ORCID iD: 0000-0002-4568-4800
Luleå University of Technology, Sweden.
Boliden AB, Sweden.
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2023 (English)In: Cleaner Materials, ISSN 2772-3976, Vol. 10, article id 100209Article in journal (Refereed) Published
Abstract [en]

The metallurgical and cement industries contribute significantly to anthropogenic carbon dioxide emissions. Utilizing oxidic by-products from the metallurgical industry as supplementary cementitious materials (SCMs) can improve resource efficiency and reduce emissions from cement production. Iron silicate copper slags have been studied as SCMs, but mainly in systems where Portland cement is used as an activator. There is limited research on the inherent reactivity of the slag under changing processing conditions. The present study offers insight into the effect of granulation temperature and grinding on the inherent reactivity of an industrially produced iron silicate copper slag. The results showed that granulation temperature had an insignificant effect on reactivity, while grinding generated substantial improvements. The latter effect was concluded to stem from the increased specific surface area, increased number of sites for nucleation and growth of hydrates, and changes in the inherent reactivity owing to structural changes induced by the grinding. 

Place, publisher, year, edition, pages
Elsevier Ltd , 2023. Vol. 10, article id 100209
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Materials Engineering
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URN: urn:nbn:se:ri:diva-67943DOI: 10.1016/j.clema.2023.100209Scopus ID: 2-s2.0-85176147677OAI: oai:DiVA.org:ri-67943DiVA, id: diva2:1814667
Note

The work was funded by Boliden AB and conducted within the Centre of Advanced Mining and Metallurgy (CAMM) at Luleå University of Technology.

Available from: 2023-11-27 Created: 2023-11-27 Last updated: 2023-12-27Bibliographically approved

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Brander, Linus

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