Research Article Open Access
CHARACTERIZATION AND STUDY OF DIFFERENT ELECTRIC ARC FURNACE STEEL SLAGS FOR USAGE IN WASTEWATER TREATMENT
Abstract
In this study we present the mineralogical, morphological, phase structure and chemical composition of two types of Electric Arc Furnace Slags (EAFS). The slag samples, Electric Arc Furnace Falling Slag (EAFFS) and Electric Arc Furnace Dust Slag (EAFDS) were analysed using instrumental and wet chemical analysis. The result indicated that both types of slag contain the same types of minerals and metals albeit in different percentage. The most common mineral forms were akermanite, ghelenite, merwinite, monticellite, calcite, ferrite and quartz. It was found that EAFDS contains a larger proportion of the readily soluble mineral forms, less concentration of hazardous metals and a larger percentage of alkali (greater than 94% as CaCO3 ). Hence EAFDS is a better choice for acidic wastewater treatment for neutralisation as well as removal of metals
TEDLAYE FORSIDO
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