Eco-friendly concrete can be produced with blast furnace slag [3] fly ash [4], kiln [5] metakaolin [6] etc. which are alumina silicate rich materials. By-products and wastes of steel industry, which are slag and sludge, have been used in concrete as aggregate and supplementary cementitious material by researchers at last decades.
In this research they addressed microstructural and thermal properties as well as wear behaviour of electric arc furnace (EAF) slag samples to evaluate their usability against heat expansion and cold contraction during heat …
For steel producers aiming to use an electric arc furnace (EAF) to smelt the direct reduced iron [ 1 ], a slag valorization route for the EAF slag must be considered to maintain sustainable steel production from a material efficiency standpoint.
For sustainable development in the construction industry, blast furnace slag has been used as a substitute for cement in concrete. In contrast, steel-making slag, the second largest by-product in the steel …
In this work, the generated slag from electric arc furnace (EAF) provided by the French steel industry was characterized by using multitude analytical techniques in order to determine the physico-chemical characteristics of the targeted slag.
Slag ing can be performed in an electric arc furnace (EAF). This has several advantages including protection of the metal bath, enhanced post combustion ratio, shielding of the electrical arc, reduced arc flares, and reduced erosion of the refractory in the furnace. Slag ing can decrease electric power consumption by 3 to 10 pct in …
The furnace is refractory lined, and scrap and iron reduced from iron ore are charged into the furnace. (Refractory material is heat-resistant and infusible at the highest temperature of the steelmaking process.) Carbon electrodes pass current through the scrap to the furnace lining which creates an arc that supplies heat.
One of the major by-products of the steel production industry is Electric Arc Furnace (EAF) slag. In the field of research and development and in cooperation with the laboratory of EGNATIA ODOS SA ...
Hosseinzadeh et al. (2016) investigated the effect of slags (electric arc furnace) in combination with recycled aggregate on asphalt concrete properties as an …
This article presents a comprehensive review of electric arc furnace (EAF) slag recycling in the United States, examining its classification and the associated …
This paper analyses the environmental impact of replacing high-quality coarse aggregates by electric arc furnace (EAF) steel slag. A Life Cycle Assessment (LCA) was performed on three asphalt mixtures containing different aggregates: namely ophite, slag 1 and slag 2.
Abstract. In this paper the use of Electric Arc Furnace slag (EAF slag) for the production of High-Performances Concrete (HPC) is explored, as a fully replacement of the natural gravel. Several ...
In this context, the use of Electric Arc Furnace slag (EAF) from carbon steel has been explored from several years, in relation to various civil engineering …
According to this classification, EAF slag can be used to realize structural concrete without any limitation on substitution ratio or grading. It is also known as "black slag" or "oxidizing slag."
The possibility of utilization of Electric Arc Furnace (EAF) slag produced in Bangladesh as a coarse aggregate in concrete. Electric Arc Furnace slag has been explored. Samples of slag was collected from a steel plant in Chittagong. X-Ray Fluorescence (XRF) and X-Ray Diffraction (XRD) techniques were used to investigate the chemical composition and to …
The growth of electric arc furnace (EAF) steelmaking in North America has occurred mainly in the past 40 years due to low electricity prices, an abundance of steel scrap …
This work proposes the use of electric arc furnace slag (EAFS) as a catalyst for the ozonation reaction, primarily due to its composition rich in iron oxides, which have proved to be active sites in the ozonation reaction. EAFS is a by-product that consists mainly of silicates and oxides formed during the process of refining the molten steel.
The predominant way of making steel in the United Sates is by using an electric arc furnace (EAF) to melt scrap steel, which results in the formation of a rock-like material called slag. Among its various applications, EAF slag is used in a loose or unencapsulated form as ground cover material for residential landscaping. However, the …
An interesting aspect to consider in the optics to reduce the leaching of elements from slags is rapid cooling, for example by water granulation, that can results in an amorphous slag ...
Interfacial reactions between the electric arc furnace (EAF) slag, i.e., CaO–SiO 2 –FeO–MgO–Al 2 O 3 –MnO system, and the magnesia refractory as a function of direct reduced iron (DRI) addition (0, 10, 20, 30 wt%) were investigated at 1550 °C under an Ar atmosphere.
In the present study the locally available electric arc furnace steel slag (Slag A) and the ladle furnace basic slag (Slag R) from different metallurgical industries in Slovenia were selected for alkali activation because of …
Here we deploy an integrated approach to mineralizing flue gas CO 2 using electric arc furnace slag while utilizing the reacted product as supplementary cementitious materials to establish a waste ...
The high energy consumption level can be interpreted as a high amount of CO 2 and other greenhouse gas emissions. There are different approaches to reduce these harmful impacts, such as using alkali-activated slag concrete (AASC) and incorporating recycled and by-product aggregates like Electric arc furnace (EAF) slag.
This makes slag an important substitute for natural resources, leading to significant minimization in natural resource utilization. This paper walks through a comprehensive essay of steelmaking slag retained in a wide range of furnaces, their modifications and their applications alike.
In this study, electric arc furnace (EAF) slags were used as the experimental feedstock, and ammonium chloride solution was used as the leaching agent during the mineral carbonation process.
EAF slag is a rock-like material generated during the steel-making process. Approximately 130 facilities across the United States generate EAF slag. EAF slag is used as an alternative to rock fragments, both in encapsulated uses (e.g., contained in concrete) and unencapsulated uses (e.g., loose ground cover mater…
A single ton of ordinary Portland cement (OPC) demands around 4.0 G Joule energy and creates about a ton of CO 2 emission. As part of our effort to preserve the environment, the incorporation of ground granulated blast-furnace slag (GGBFS) or fully replaced by alkali-activated slag (AAS) as an alternative binder to OPC. This concrete is …
The aim of this section is to comprehensively investigate the possibility of substituting natural aggregates with Black/Oxidizing Electric Arc Furnace (EAF) slag, at high replacement ratios, to produce structural concrete. The properties of the slag are described in detail, in terms of chemical composition, mineralogy, microstructure and …
