Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6719118 | Construction and Building Materials | 2016 | 9 Pages |
Abstract
The dissolution of electric arc furnace steel slag (EAFSS) in highly alkaline MOH solution (MÂ =Â alkali metal Na or K) has been investigated with emphases on the influence of the initial alkali concentration, solid to liquid (S/L) ratio and temperature on the kinetics of Si and Al dissolution from EAFSS. The shrinking core model (SCM) was used to analyze experimental data and the results have shown that the Si and Al dissolution from EAFSS was greatly influenced by MOH concentration, alkaline ion type and temperature. The dissolution process was controlled by the bulk diffusion through the product layer crystals. The activation energy for Si and Al dissolution was 55.27Â kJ/mol and 48.05Â kJ/mol in NaOH solution and 90.68Â kJ/mol and 33.62Â kJ/mol in KOH solution, respectively.
Keywords
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Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Irena NikoliÄ, Ana DrinÄiÄ, Dijana DjuroviÄ, Ljiljana KaranoviÄ, Vuk V. RadmiloviÄ, Velimir R. RadmiloviÄ,