Utilization of Electric Arc Furnace Dust as Raw Material for the Production of Ceramic and Concrete Building Products
- 1 September 2006
- journal article
- research article
- Published by Taylor & Francis Ltd in Journal of Environmental Science and Health, Part A
- Vol. 41 (9), 1943-1954
- https://doi.org/10.1080/10934520600779240
Abstract
The up to 20 wt% addition of the Electric Arc Furnace Dust (EAFD) hazardous waste on the properties of extruded clay-based ceramic building products fired at various temperatures (850 to 1050°C), as well as of dolomite-concrete products was investigated. Chemical, mineralogical and particle size distribution analyses were performed in order to characterize the used EAFD. The results showed that the ceramic specimens prepared had water absorption, firing shrinkage, apparent density, mechanical strength, colour and leaching behaviour within accepted limits. Addition of 7.5 to 15 wt% EAFD presented improved properties, while 20 wt% seems to be the upper limit. Dolomite-concrete specimens were prepared by vibration and press-forming of mixtures containing cement, sand, dolomite, EAFD and water. Modulus of rupture values were significantly increased by the addition of EAFD. The leaching tests showed stabilization of all toxic metals within the sintered ceramic structure, while the leaching behaviour of lead in dolomite-concrete products needs further detailed study.Keywords
This publication has 3 references indexed in Scilit:
- Characterization of steel mill electric-arc furnace dustJournal of Hazardous Materials, 2004
- Properties of Portland Cement Pastes Incorporating Nanometer‐Sized Franklinite Particles Obtained from Electric‐Arc‐Furnace DustJournal of the American Ceramic Society, 2001
- Recovery of Zinc Oxide from Secondary Raw Materials: New Developments of the Waelz ProcessPublished by Wiley ,2000