This study explores the utilization of steel slag in the cement industry through direct aqueous carbonation. The carbonation process produces nano-sized CaCO3 particles as the main product. Increasing the carbonation degree leads to larger particle size and higher crystallinity of CaCO3. The distribution of BOF slag particle sizes changes, and the specific …
Properties. Chemical properties of different types of ferrous slag vary depending on the specific production process. A common characteristic of these slags is that they result from lime and silica based melts, therefore calcium oxide (CaO) and silica (SiO 2) are their primary components.Other components include alumina (Al 2 O 3) and magnesium oxide (MgO).
The unit weight of slag varies within a range of 1600 kg/m 3 to 1920 kg/m 3 with a specific gravity between as high as 3.6 (Hainin et al., 2014).
This will not only reduce the expansive risk of steel slag to improve the utilization of steel slag further but also capture and store CO 2 due to the mineralization process to reduce carbon emissions. In this study, based on the physical and chemical properties of steel slag, the carbonation mechanism, factors affecting the carbonation process ...
The chemical composition of steel slag is highly variable and depends on the steel making process, the raw materials used, and the furnace conditions (Shi, 2004). Needless to mention, variability in physical properties of slag has also been observed. ... Selected physical properties of steel slag are shown in Table 10.1. Depending on the used ...
Pozzolanic properties of steel slag and steel sludge were evaluated using pozzolanic activity test specified by ASTM C618. In addition, the materials were subjected to X-ray Fluorescence and X-ray Diffraction tests in order to identify their chemical as well as mineral compositions respectively. ... Comparatively, the steel slag performed ...
One of these materials is steel-furnace slag, which is a by-product of steel manufacturing that is usually disposed of in the environment, causing pollution. ... Chemical properties of steel slag. ...
Steel slag is a byproduct of the steelmaking and steel refining processes. This paper provides an overview of the different types of steel slag that are generated from basic-oxygen-furnace …
The iron and steel industry is an energy-intensive industry and a pillar industry of the national economy. Steel slag (SS) is an alkaline solid waste generated during the steelmaking process [1].Each ton of crude steel produced generates 0.1–0.15 tons of SS and emits 1.85 tons of CO 2 [2, 3].The iron and steel industry is not only one of the largest sources of industrial solid waste …
Download scientific diagram | Chemical properties of steel slag. from publication: An Overview on Utilization of Steel Slag as Road Construction Materials | The transportation and highway ...
This study compared the physical and chemical properties of steel slag produced by three different methods from four different steel mills. We compared the changes in mineral phases, microstructure, water stability, …
Steel slag is a byproduct of the steelmaking and steel refining processes. This paper provides an overview of the different types of steel slag that are generated from basic-oxygen-furnace …
The physico-chemical and strength properties were studied to quantify the efficacy of different alkali activators with 70% of ordinary Portland cement and 30% of ball milled LD slag blend. ... ladle furnace (LF) slag, Linz-Donawitz (LD) slag etc. are being mostly dumped. Efforts were made to make use of steel slag for different applications ...
The slag-derived glass-ceramics are generally prepared by the melting method or sintering method (Alizadeh et al., 2007; Luo et al., 2020).Fig. 2 shows the main steps of these two methods. As metallurgical slags only contain a part of the basic components of target glass-ceramics, their compositions need to be modified using other materials.
Chemical Properties. The chemical composition of slag is usually expressed in terms of simple oxides calculated from elemental analysis determined by x-ray fluorescence. Table 18-2 lists the range of compounds present in steel slag from a typical base oxygen furnace. ... Typical mechanical properties of steel slag. (3) Property: Value: Los ...
To realize the potential application of steel slag in CMA pavement, the alkalinity, hydration activity, pore characteristics, and three-dimensional (3D) morphology were …
Steel slag exhibits significant carbonation activity, attributed to its relatively high CO 2-reactive components, such as dicalcium silicate, tricalcium silicate, portlandite, and free-CaO, making it a prime candidate for CO 2 sequestration [13], [14].Various methods for the mineral carbonation of steel slag have been proposed, including direct dry carbonation, direct …
The chemical composition, mineralogy, and morphology of steel slag particles can influence both the cementitious characteristics and mechanical properties of steel slag. Two different types of steel slag (BOF and EAF ladle slags) generated from Indiana steel plants …
During electroslag remelting, Mg in the electrode reacts with some components in the slag, resulting in its serve oxidation loss. The CaF 2 −CaO−Al 2 O 3 −MgO slags with high MgO content are generally used for remelting Mg-containing Fe- and Ni-based alloys. However, there is a scarcity of foundational data available on the physical and chemical properties of …
Download scientific diagram | Chemical Properties of EAF Steel Slag Aggregates. from publication: Swelling behavior of electric arc furnace aggregates for unbound granular mixtures in road ...
This paper reviews the production, processing, and characteristics of steel slag, and its use as a cementing component in different cementing systems. The chemical …
In this paper the physical, chemical and mechanical properties of steel slag are found out and compared with the properties of natural aggregate. It is found that the properties of steel slag are nearly same as that of natural aggregate which enhances the possibilities of utilization of steel slag as substitute for natural aggregate.
Download Table | Chemical composition of steel slag (%) from publication: Influence of Water Content on Mechanical Properties of Improved Clayey Soil Using Steel Slag | The use of steel slag fines ...
Steel slag is a by-product of the steel industry and usually contains a high amount of f-CaO and f-MgO, which will result in serious soundness problems once used as a binding material and/or aggregates. To …
1. Introduction. As a kind of byproduct generated during the manufacturing of steels, steel slag accounts for 25% of the total solid wastes. Because of its complicated composition and unstable performance as well as the slow development of processing technology, nearly one billion tons of steel slag has currently been accumulated in China, of …
Properties of steel slag2.1.1. Chemical composition. Steel slag, as a by-product of the steelmaking process, is an industrial waste formed from impurities in the metal raw material with fluxes and furnace linings. ... The chemical composition of steel slag is mainly influenced by the production process of steel and raw materials. Due to the ...
The chemical composition of steel slag is highly variable and depends on the steel making process, the raw materials used, and the furnace conditions (Shi, 2004). Needless to mention, …
2.1. chemical composition and mineral composition of steel slag The main chemical components of steel slag are CaO, SiO2, Fe2O3, Al2O3, MgO, MnO, FeO, fCaO, etc. With the difference …
Chemical Properties. Table 3-2 depicts the typical chemical composition of blast furnace slag. The chemical compositions shown are in general applicable to all types of slag. ... "Evaluation of Steel Slag Asphalt Surface Mixtures", Presented at the 69th Annual Meeting, Transportation Research Board, Washington, January, 1990. Smith, M. A ...
Thermophysical and mechanical properties of C-PCMs were analyzed. Results showed that CFA modification greatly improved chemical compatibility between steel slag and eutectic salt through phase reconstruction. Steel slag modified with 30 wt% CFA at 1100 °C was identified as the optimum skeleton. ... The results indicated that steel slag had a ...
Physical and Chemical Properties of Steel Slag and Utilization Technology of Steel Slag at Home and Abroad. Li Bing 1, Tang Biao 1, Ma Zhen 1, Cheng Hanchi 1 and Li Hongbo 1. Published under licence by IOP Publishing Ltd IOP Conference Series: Earth and Environmental Science, Volume 242, Issue 3 Citation Li Bing et al 2019 IOP Conf. Ser.: Earth ...
The previous chapter covered the formation of liquid slag as part of electric arc furnace (EAF) steelmaking and its complex and highly variable chemistry. This chapter discusses the chemical and physical properties of slag in its solidified state, trace elements in slag, changes in slag due to weathering and wear, and the potential release and environmental …
Incorporating steel slag into the alkali-activated fly ash system effectively enhances the compressive strength of ATC. ... dried, ground, and subjected to another de-ironing process to obtain converter SS powder. The main chemical composition, physical properties, microstructural, and particle size distribution of the precursor are shown in ...
