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A Method for Synthesizing Iron Silicate Slags to Evaluate Their Performance as Supplementary Cementitious Materials
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: Applied Sciences, E-ISSN 2076-3417, Vol. 13, no 14, article id 8357Article in journal (Refereed) Published
Abstract [en]

Utilizing iron silicate copper slag as supplementary cementitious material (SCM) is a means to improve resource efficiency and lower the carbon dioxide emissions from cement production. Despite multiple studies on the performance of these slags in SCM applications, the variations in cooling procedure, grinding, and methods for evaluating reactivity limit the ability to assess the influence of chemical composition on reactivity from the literature data. In this study, a methodology was developed to synthesize iron silicate slags, which were then evaluated for their inherent reactivity using the R3 calorimeter-based experiments. The results demonstrated that laboratory-scale granulation produced the same reactivity as industrially granulated slag. Furthermore, a synthesized triplicate sample showed high repeatability. Based on these two aspects, this method can be used to systematically study the influence of chemical composition on the inherent reactivity of iron silicate slags while producing results that are directly translatable to industrial slags. © 2023 by the authors.

Place, publisher, year, edition, pages
Multidisciplinary Digital Publishing Institute (MDPI) , 2023. Vol. 13, no 14, article id 8357
Keywords [en]
circularity, copper slag, recycling, supplementary cementitious material, synthetic iron silicate glass
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:ri:diva-65960DOI: 10.3390/app13148357Scopus ID: 2-s2.0-85166204134OAI: oai:DiVA.org:ri-65960DiVA, id: diva2:1790619
Note

The financial support by Boliden AB was limited to funding, i.e., the participating researchers determined the design of this study, the collection, analysis, and interpretation of data, as well as the writing of the manuscript.

Available from: 2023-08-23 Created: 2023-08-23 Last updated: 2023-12-27Bibliographically approved

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Brander, Linus

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