Study of properties and behavior of concrete containing EAF slag …
Mineralogical composition of eaf slag and stabilised aod slag aggregates and dimensional stability of slag aggregate concretes. Construct. Build. Mater., 115 (2016), pp. 171-178, 10.1016/j.conbuildmat.2016.04.036. View PDF View article View in Scopus Google Scholar. Ahmad et al., 2017.
اقرأ أكثر
Novel method for improving iron recovery from electric arc furnace slag
The iron element in electric arc furnace (EAF) slag is extremely difficult to recycle due to the low specific magnetic susceptibility of the RO phase (a solid solution of FeO, MgO, CaO, and MnO). Landfilling EAF slag is strictly forbidden for environmental consideration because of poisonous Cr6+ leaching. The original RO phase could be transformed to a spinel structure, …
اقرأ أكثر
(PDF) New EAF Slag Characterization …
EAF slag were near to those of the hardened neat Portland Cement Paste at most of the. hydration ages, especially at the latest, according to Hekal et al. [9]. Petrakis et al. [10
اقرأ أكثر
Insights into the Valorization of Electric Arc Furnace Slags as
Water-granulated EAF slag with a basicity of 2.0 was found to have 76 wt% amorphous content in addition to crystalline α′-dicalcium silicate and MeO (ss), which resulted in a reactive SCM, indicating the possibility of reaching similar performance as GGBS due to a depolymerized amorphous phase and hydraulic crystalline phase.
اقرأ أكثر
The behaviour of the secondary metallurgy slag into the EAF…
KEY WORDS EAF Slag, Ladle Slag, Recycling, Powder Injection, y Slag INTRODUCTION The Environment is becoming more and more a key issue for the Steel Industry. In particular areas where the increasing variable cost of production and the cost of men work are reducing the profit on the final product, the additional cost of residues dumping can ...
اقرأ أكثر
Electric Arc Furnace Slag
Electric arc furnace (EAF) slag has excellent mechanical properties that justify its use as aggregate in the manufacture of bituminous mixes.
اقرأ أكثر
EAF Slag
LXS-Pueblo EAF Slag_Scenario Wet-Dry (2-Dec-2023) LXS-Pueblo EAF Slag_Depth (2-Dec-2023). This dataset is associated with the following publication: Yu, S., …
اقرأ أكثر
Feasibility Study and Criteria for EAF Slag Utilization in …
arc furnace; the EAF slag, which is produced in granulated form during the first stage of steel production, and the ladle furnace slag (LFS), which is a fine material produced at the second stage of steel production after the addition of fluxes to the molten slag in a …
اقرأ أكثر
Treatment and characterisation of electric arc furnace (EAF) slag …
Electric Arc Furnace (EAF) slag from one of the steel plants in Western India has been characterised in detail. Its effectiveness as hydraulic material is examined before and after heat treatment in an induction furnace. The study shows that while there is a marginal reduction in the early age strength of the Portland Slag Cement mortar, the ...
اقرأ أكثر
Reaction Kinetics of Palm Char and Coke with Iron Oxides in EAF …
The reaction kinetics, activation energy, and reduction rates of different carbon reductant properties with electric arc furnace (EAF) slag determine the effectiveness of carbon in EAF steelmaking.
اقرأ أكثر
From leaching data to release estimates: Screening and …
In steel production, the electric arc furnace (EAF) process is the dominant method for melting recycled steel, iron scrap, pig iron, and direct reduced iron into a desired grade of carbon steel [1].Lime (CaO) and dolomite (MgO) are added into the steel melt and pressurized oxygen is introduced to mobilize impurities which are removed from the melt in the form of EAF …
اقرأ أكثر
Additional Slag Doors for Increased EAF Efficiency: A …
electric arc furnace (EAF) slag doors, in order to allow removal of the excess slag (ES) from the EAF, is performed. The idea of additional slag doors is to allow deslagging of the EAF in certain unfavorable conditions when the slag height is too great and extends over the arcs. Whether the slag exceeds its optimal height, i.e. being greater ...
اقرأ أكثر
The steel production transformation process in Europe: New slag …
The main challenge of the steel industry for the next decade is the steel production transformation process, starting in Europe. The CO 2 intensive blast furnace/basic oxygen furnace (BOF) route will be substituted by a combination of Direct Reduced Iron (DRI), based on natural gas, later on "green" hydrogen, with an Electric Arc Furnace (EAF) or a Submerged Arc Furnace (SAF), …
اقرأ أكثر
Electric Arc Furnace Slag as Coarse Recycled Aggregate for Concrete
Electric arc furnace (EAF) slag is a by-product of steel production in electric arc furnaces. Several studies have tried to demonstrate its suitability in civil engineering application, such as in bituminous mixtures and cement-based materials, due to its good physical, chemical and mineralogical properties. Particularly the re-use as coarse aggregate for concrete …
اقرأ أكثر
Interfacial reactions between magnesia refractory and …
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. MgO solubility increases with increasing DRI content by decreasing basicity (i.e., CaO/SiO 2 …
اقرأ أكثر
Thermodynamics analysis and experimental investigation of EAF slag …
When EAF slag was added to the base mixture, there was a positive trend of improvement in the physical properties and specifically, MOR peak value of 37.56 MPa was obtained when 40 % EAF slag was added. However, the MOR value as well as other physical properties started to decline when the base mixture had more than 40 % EAF slag. …
اقرأ أكثر
Electric Arc Furnace Slag | Encyclopedia MDPI
EAF slag is considered basic (alkaline) by nature, mainly due to its large amount of CaO. When exposed to a water source, EAF slag undergoes a hydrolysis reaction, forming a Ca–CO 3 –OH ion matrix solution that exhibits a pH of 10.0–12.5 . The basicity of EAF slag is comparable to concrete and can be used to increase soil pH.
اقرأ أكثر
Electric Arc Furnace Slag Understanding Human Health …
E xposure levels for substances found in EAF slag that are associated with adverse effects observed in epidemiological studies, and how those levels compare with potential exposures through the unencapsulated use of EAF slag, including residential uses, such as landscaping. Population subgroup characteristics and human developmental stages ...
اقرأ أكثر
Slag ing estimation in the electric arc furnace using …
In this study, an estimation model, which predicts the slag ing height in the EAF steelmaking process, has been developed using big data from 298 sensors recorded during operation of a twin-shell DC-EAF steelmaking process for 105 days. The long short-term memory (LSTM) algorithm was adopted to deal with the dynamic and nonlinear slag ...
اقرأ أكثر
Investigation on applicability of spherical shaped EAF slag …
Sustainable utilization of EAF slag has become a concern to the steel manufacturers for several reasons. Firstly, recycling of EAF slags by feeding them back into the process is limited due to the fact that mixing impurities will increase the removal task and consume more energy [4].Secondly, because of having large amount of metal oxides in EAF …
اقرأ أكثر
Mineralogical composition of EAF slag and stabilised AOD slag
EAF slag is generated during melting scrap in an electric furnace. It is a crystalline rock which is morphologically stable. AOD slag is generated during the refining process step. It naturally falls to a powder on cooling but can be stabilised, producing a solid crystalline slag. Today, stainless steel slag recovery as aggregates in concrete ...
اقرأ أكثر
Influence of Recycled Wastes on Slag ing during EAF …
Recycling waste materials were introduced in order to control slag ing in EAF steelmaking. The present paper reviews about slag ing behaviour focused on slag droplet volume (Vt/V0 ratio), their transformation and morphology during carbon/slag interaction using sessile-drop technique at 1550°C on polymeric (HDPE), agricultural waste ...
اقرأ أكثر
New EAF Slag Characterization Methodology for Strategic …
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 …
اقرأ أكثر
Slag Evaluation to Reduce Energy Consumption and EAF …
The slag binary basicity is a ratio between the oxides %CaO and %SiO 2. There are optimum points of basicity to achieve lower energy consumption, Figure 47. The use of slag saturated in MgO is of great importance in the EAF operation since the saturation in this oxide assists the formation of the y slag, contributing to higher
اقرأ أكثر
Environmental benefit assessment of steel slag utilization …
For EAF slag, both CaO and ferrous oxide (FeO) comprise a large proportion, where the CaO content ranges between 22 and 60% and the FeO content can go up to 40% (Yildirim and Prezzi, 2011). Note, the FeO content of EAF slags from stainless steel production is relatively low (e.g., 2%) (Shen et al., 2004). During the second refinement process ...
اقرأ أكثر
Carbon-material-energy flows nexus analysis of electric arc …
The waste heat of slag and flue gas of 74.1 and 66.1 kWh in EAF-FHM is quite higher than that of 23.9 and 5.8 kWh in in EAF-FS. As for the other energy terms, the overall difference is not obvious. HM provides more input energy, improves the energy intensity, and cuts down the consumption of other energy sources, especially the expensive ...
اقرأ أكثر
Thermodynamic Calculations Predicting MgO …
The Dual Saturated EAF Slag Chemistry Derived Using Thermodynamic Calculations Dual saturated EAF slags may not occur under two conditions: 1) when the MgO content in slag is less than about 5 wt%, where the formation of both (Mg, Fe)O and Ca2SiO4 together is not
اقرأ أكثر
EAF slag in asphalt mixes: A brief review of its possible re …
EAF slag, in the same way as BOF slag, has traditionally been used as unbound material in preparing subgrades, subbases and bases for beds, embankments of roads and railways (Behiry, 2013, Chesner et al., 1998, Motz and Geiseler, 2001, Rohde et al., 2003, Stroup-Gardiner and Wattenberg-Komas, 2013).In general, these slags have good features as coarse …
اقرأ أكثر
Electric arc furnace slag and its use in hydraulic concrete
EAF slag forms a particular type of microstructure in the interfacial transition zone. Abstract. Electric arc furnace oxidizing slag (EAFS) is a by-product of the steelmaking industry, generated after the melting and the preliminary acid refining of liquid steel. It is a stony material that is easy to crush for use as aggregate in concrete mixes.
اقرأ أكثر
Recycling Perspectives of Electric Arc Furnace Slag in the …
This article presents a comprehensive review of electric arc furnace (EAF) slag recycling in the United States, examining its classification and the associated challenges and …
اقرأ أكثر