Solidification of waste steel foundry dust with Portland cement

Properties of mixtures of Portland cements and “waste steel foundry dust (WSFD)” from Czech steel works were examined. It was found that WSFDs are formed by microporous clusters of spherical particles of iron oxides, ranging in size from 10 to 100 nm. The content of ZnO in WSFD affects markedly the...

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Bibliographic Details
Published in:Journal of hazardous materials 2002-01, Vol.89 (1), p.67-81
Main Authors: Škvára, František, Kaštánek, František, Pavelková, Ivona, Šolcová, Olga, Maléterová, Ywetta, Schneider, Petr
Format: Article
Language:English
Subjects:
Applied sciences
Cement
Chemical Phenomena
Chemistry, Physical
Dust
Exact sciences and technology
Flue dust
Foundry dust
Industrial Waste
Industrial wastes
Leaching
Manufactured Materials
Material properties
Other industrial wastes. Sewage sludge
Pollution
Portland cements
Refuse Disposal - methods
Solidification
Stability
Steel
Steel foundries
Waste disposal
Waste management
Wastes
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Summary:Properties of mixtures of Portland cements and “waste steel foundry dust (WSFD)” from Czech steel works were examined. It was found that WSFDs are formed by microporous clusters of spherical particles of iron oxides, ranging in size from 10 to 100 nm. The content of ZnO in WSFD affects markedly the hydration of cement+WSFD mixtures both in solidification time and strength development. Properties of WSFD are very similar to those of very fine silicon flue dusts formed during Si and FeSi production. Cement+WSFD mixtures show long term strength stability and low heavy metals leaching even at WSFD content of 70–80wt.% The above results document the perspectives of WSFD solidification, disposal and the use of this waste material as a new additive to building materials.
ISSN:0304-3894
1873-3336
DOI:10.1016/S0304-3894(01)00294-1