DEVELOPMENT OF TECHNOLOGY FOR PROCESSING OPEN-HEARTH SLAG INTO COMPOSITE STRUCTURAL MATERIALS
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Published:2005
S I Pavlenko, Ye V Fillippov, U N Anashkina, N S Anashkin, 2005. "DEVELOPMENT OF TECHNOLOGY FOR PROCESSING OPEN-HEARTH SLAG INTO COMPOSITE STRUCTURAL MATERIALS", Achieving Sustainability in Construction: Proceedings of the International Conference held at the University of Dundee, Scotland, UK on 5–6 July 2005, Ravindra K. Dhir, Tom D. Dyer, Moray D. Newlands
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An investigation into slag and waste sand from open-hearth furnaces of the “KSC Steel” company has been conducted with the purpose of processing for use in concrete as binder and aggregate. The materials studied were of two types: slag taken from the running production process (fresh slag) and sand stored in landfill (the amount exceeds 25 million tons). Physical characteristics, structure, chemical and mineralogical compositions, radionuclides and toxic element content have been examined. Recommendations for further research into the creation of the technology for their treatment have been made. The feasibility of utilizing the slag, after grinding and chemical separation, as fine (0 to 5 mm size fraction) and coarse (5 to 10; 10 to 20 and 20 to 40 mm fraction) aggregates for concrete and also as a binder component, after the decomposition of calcite (CaCO3) and mechanochemical treatment, have been established. After the proper treatment and the addition of foundry sand and free calcium oxide, the fresh slag can be synthesized into a binder in planetary mills.
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