قائمة الطعام
Thermodynamic studies of MgO saturated EAF slag. y slags are widely practiced in electric arc furnace (EAF) steel production, reducing energy consumption, improving yield, reducing furnace noise, and increasing refractory service life. Control of slag chemistry within a specific range is necessary to achieve maximum benefits from …
The BET specific surface area (S BET) analysis of the EAF slag before carbonation was performed using nitrogen gas analysis adsorptive.The result shows S BET of the slag to be 1.2 m 2 /g, pore volume 0.99 cm³/g and pore size 203 nm Fig. 2 shows the N 2 adsorption–desorption and pore size distribution plots of the fresh EAF slag. …
On the other hand, angular shaped EAF slag concrete having slag ratio of 0.3 and spherical shaped EAF slag concrete of all slag ratio cases show moderate durability. Low air entrained (∼2%) concretes show bad durability irrespective of the type of slag and the durability factors were calculated in the range of 5–7% only.
The goal is to optimize the metallurgical processes based on real-time slag analysis. The measurements for the dissertation were performed as part of the EU-funded OSCANEAF project (On-line Slag Composition Analysis for Electric Arc Furnaces). The goal of the project was to develop a continuous measurement system for EAF slag …
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.
This paper details the development process of ceramics made out of electric arc furnace (EAF) steel slag, to be used as a shaped homogenous thermal energy storage (TES) media in packed-bed thermocline systems for high-temperatures industrial waste heat recovery, concentrated solar power (CSP), and Carnot batteries applications, …
EAF stainless steel slag (EAF slag) is one kind of chromium-bearing metallurgical solid waste, which belongs to alkaline steel slag, and contains a large number of alkaline mineral phases. The carbonation activity of these minerals gives EAF slag the capability to effectively capture CO2. In this paper, EAF slag samples with different …
Whereas the DRI process itself does not generate any slag, EAF and SAF will do. These slags will be very different. Moreover, the new EAF slags will be also different compared to today's scrap based EAF slag. However, specific slag/metal ratios, resulting slag volumes, chemical and mineralogical compositions and physical properties of the …
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 …
In this study, the carbonation and hydration behavior of electrical arc furnace (EAF) slag and basic oxygen furnace (BOF) slag were examined. Steel slag is a latent hydraulic material. Its early strength can be activated by carbonation reaction. The carbonated steel slag can be used as a binder to replace Portland cement in the …
Electric arc furnace carbon steel slag is a by-product of the manufacture of steel by the electric arc furnace process (EAF). Production and Processing An Electric arc furnace …
EAF slag is a waste material with a huge production volume in melt shops (15-20% of melt capacity). It contains metal residuals and can not be treated easily and with cost effective methods. Slag atomising technology (SAT) is a new system adopted (invented) to atomise molten slag out of electric arc furnaces in a most effective way, and …
During the production of 1-ton liquid crude steel in BOF and EAF, steel slag occurs at a ratio of 12–15% 5,6,7. The steel slag generally contains CaO, MgO, SiO 2, Al 2 O 3, Fe 2 O 3, MnO and ...
EAF slag is a by-product of steelmaking industry which, after cooling from temperatures up to 1300 °C to ambient conditions, becomes a dark-gray stony material with a rough …
Experimental protocol for characterization of electric arc furnace (EAF) slag. The equipment and apparatus used for various analysis as well as the analytic proto- cols …
The slag chemistry in the EAF is targeted to promote phosphorus removal from the steel and to promote slag ing to shield the furnace from direct exposure to the arc at high power input. The slag's physical properties (basicity and viscosity) are directly influenced by the slag's chemical composition [3][4].
EAF slag is a non-metallic by-product that consists mainly of silicates and oxides formed during the process of refining the molten steel. Raw EAF slag often appears as grey or black colored lumps, depending on its ferrous oxide content. This type of slag generally has a rough surface texture, with a surface pore diameter of 0.01–10 μm.
Some DRI-EAFs are operating at low basicity (EAF 9, 11, 13, 15 in Table 3), but half of the DRI-EAFs are still operating at high slag volumes and basicity near 2 (EAF 10, 12, 14, 16 in Table 3 ...
The type of steel furnace slag (SFS), including electric arc furnace (EAF) slag, basic oxygen furnace (BOF) slag, ladle metallurgy furnace (LMF) slag, and argon oxygen decarburization (AOD) slag, can significantly affect the composite properties when used as an aggregate or as a supplementary cementitious material in bound applications, such as …
Steel slag, originated in Electric Arc Furnaces (EAF) for continuous steel production, have stone-like appearance, black colour with small white agglomerations of calcium carbonate and high roughness; they can be generally classified into two different kinds [5]: (1) Black basic slag, with a lime content lower than 40%, resulting from the cold …
Steel slags are the byproducts of the steel industry, and in the long term, electric arc furnaces are expected to be used increasingly for the production of steel, increasing accordingly the amount of electric arc furnace (EAF) slags produced [].There are two types of slag produced by the melting of scrap for the production of steel in an …
Indeed, this research [4] showed that the volumetric expansion of the coarse EAF slag (5–25 mm) reached a value of 3.9%, whilst the fine EAF slag (0–5 mm) provided an expansion up to 4.8%. These higher values, however, can be justified by the different quality of the material (e.g. ferrous scrap) fed into the furnace, which can give ...
The main chemical components of EAF slag are iron oxides (FeO, Fe 2 O 3 ), lime (CaO), silica (SiO 2 ), magnesia (MgO) and alumina (Al 2 O 3 ). Minor components include chromium, manganese ...
Steel slag, which contains basic oxides capable of generating high levels of alkalinity, may be used in leaching beds or leaching channels to neutralize acid mine drainage (AMD). In the present study, electric arc furnace (EAF) slag from the Pasargad Steel Complex was used to investigate the influence of slag particle size on AMD …
The possibility of EAF slag being used satisfactorily in concrete has been demonstrated [10], [11], [12]. The principal problems in this field remain the durability of this type of concrete [13], [14] and its environmental tolerance [15]. Correctly manufactured EAF slag concrete has good mechanical properties, and its high density is an ...
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 (especially near large …
Introduction The main waste material in the steelmaking process is steel slag. More than 40% of steel material in the world is produced in electric arc furnaces. …
Water cooled molten EAF slag The particle size distribution of water-cooled slag are shown in Figure 5. According to the results, the average particle size distribution is between 1mm – 2 mm, while the quantity of fine particles around 0.3 mm in size is approximately 14%. The shape of the granules was investigated by light microscopy and ...
This work is focused on the leaching behaviour study of electric arc furnace (EAF) slag to assess its suitability as construction material. EAF slag contains toxic …
The density of soil with EAF slag is an important parameter since it controls the strength, compressibility and permeability. In this study, several modified Proctor tests were performed to determine the effect of EAF slag on the water content (%) and the maximum dry density (MDD) of clay. … See more
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