@inproceedings{7c66d15fc42341049af72a606b9be19a,
title = "Effect of MgO and Al2O3 on the environmental behavior of chromium based slags",
abstract = "The slags produced in the stainless steelmaking process contain chromium that must be stabilized to reduce the eventual polluting effects. The objective of this work is to analyse the effect of MgO and Al2O3 content and the slag basicity on the stability of the mineralogical species and the leachability of slags. The samples of the systems CaO-CaF 2-SiO2-Cr2O3-MgO and CaO-CaF 2-SiO2-Cr2O3-Al2O 3 were prepared in an induction furnace at 1400-1500°C. The samples were analysed by X-ray diffraction and Scanning Electron Microscope to study the morphology and composition of mineral phases. The results show that slags with MgO produce MgO·Cr2O3 spinel and calcium silicates. The slags with Al2O3 produce complex compounds, Ca2Al2SiO7, Ca4Al 6CrO16 and calcium silicate crystals. Some trials were carried out to test the leachability of the slags.The results showed that owing to the stable binding of chromium in spinel with MgO or complex compounds with Al2O3 the leaching was decreased.",
keywords = "Chromium oxide, Slag, Waste management",
author = "Elda Garc{\'i}a-Ramos and A. Romero-Serrano and Beatriz Zeifert and Vanessa Ugarte-Dom{\'i}nguez and Beatriz Estrada-Mateos and Irma Montefort",
year = "2007",
language = "Ingl{\'e}s",
isbn = "9780873396844",
series = "TMS Annual Meeting",
pages = "37--47",
booktitle = "General Abstracts",
note = "136th TMS Annual Meeting, 2007 ; Conference date: 25-02-2007 Through 01-03-2007",
}