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Ground granulated iron silicate slag as supplementary cementitious material: Effect of prolonged grinding and granulation temperature

Andersson, Anton (author)
Luleå tekniska universitet,Mineralteknik och metallurgi,Luleå University of Technology, Sweden
Brander, Linus (author)
RISE,Metodik för produktframtagning,Research Institute of Sweden, Division of Built Environment – Infrastructure and Concrete, Box 857, SE-501 15 Borås, Sweden
Lennartsson, Andreas (author)
Luleå tekniska universitet,Mineralteknik och metallurgi,Luleå University of Technology, Sweden
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Roos, Åke (author)
Boliden Smelters, Boliden AB, Klarabergsviadukten 90, SE-101 20, Stockholm, Sweden
Engström, Fredrik (author)
Luleå tekniska universitet,Mineralteknik och metallurgi,Luleå University of Technology, Sweden
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 (creator_code:org_t)
Elsevier, 2023
2023
English.
In: Cleaner Materials. - : Elsevier. - 2772-3976. ; 10
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • 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.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
TEKNIK OCH TEKNOLOGIER  -- Materialteknik -- Annan materialteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Materials Engineering -- Other Materials Engineering (hsv//eng)
TEKNIK OCH TEKNOLOGIER  -- Materialteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Materials Engineering (hsv//eng)

Keyword

Circularity
Copper slag
Iron silicate slag
Recycling
Supplementary cementitious material
Process Metallurgy
Processmetallurgi
Centrumbildning - Centrum för avancerad gruvteknik och metallurgi (CAMM)
Centre - Centre for Advanced Mining & Metallurgy (CAMM)

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art (subject category)

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