Characterization of Ladle Furnace Slag from Carbon Steel Production as a Potential Adsorbent

Scientific paper - Original scientific paper

• Author: Ankica Rađenović
• Author: Jadranka Malina
• Author: Tahir Sofilić
• Author's institution: University of Zagreb; Faculty of Metallurgy
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Metallurgy

Abstract (english)

A promising type of steel slag for applications is the ladle furnace (LF) slag, which is also known as the basic slag, the reducing slag, the white slag, and the secondary refining slag. The LF slag is a byproduct from further refining molten steel after coming out of a basic oxygen furnace (BOF) or an electric arc furnace (EAF). The use of the LF slag in further applications requires knowledge of its characteristics. The LF slag characterization in this paper has been performed using the following analytical methods: chemical analysis by energy dispersive spectrometry (EDS), mineralogical composition by X-ray diffraction (XRD), surface area properties by the Brunauer-Emmett-Teller (BET) and the Barrett-Joyner-Halenda (BJH) methods, surface chemistry by infrared absorption (FTIR) spectroscopy, and morphological analysis by scanning electron microscopy (SEM). The results showed that the main compounds are calcium, silicon, magnesium, and aluminium oxides, and calcium silicates under their various allotropic forms are the major compounds in the LF slag. Surface area properties have shown that the LF slag is a mesoporous material with relatively great BET surface area. The ladle furnace slag is a nonhazardous industrial waste because the ecotoxicity evaluation by its eluate has shown that the LF slag does not contain constituents which might in any way affect the environment harmfully.

• Keywords (english): ADSORPTION; REMOVAL; SURFACE; WASTES; BLACKS; IONS
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Advances in Materials Science and Engineering
• Numbering: vol. 2013, pp. 1-6, 198240
• p-ISSN: 1687-8434
• e-ISSN: 1687-8442
• DOI: https://doi.org/10.1155/2013/198240
• URN:NBN: urn:nbn:hr:115:101483
• Publication: 2013
• Document URL: http://www.hindawi.com/journals/amse/2013/198240/
• Type of resource: Text
• Access conditions: Open access
• Created on: 2017-03-14 13:00:03