Electric Arc Furnace Granulated Slag for Sustainable …
absorption and density of natural aggregates and slag waste were evaluated according to UNI EN 1097-6 (Table 2). EAF granulated slag showed higher density than natural aggregates as a consequence of their high iron content (20 ÷ 30% vs weight). Hence, the higher the amount of slag was in the mix, the higher the density of concrete.
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The effect of water cooling on the leaching behaviour of eaf slag …
The object of this study was the investigation of the influence of cooling methods of hot electric arc furnace (EAF) slag from stainless steel production on the leaching behaviour of the slag.
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RECENT DEVELOPMENTS IN DRY SLAG GRANULATION: …
granulation methods used for slag treatment do not permit energy recovery. Furthermore, water is present in these processes and while operations are designed to minimize risks of steam explosions ...
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High-temperature modification and air-quenching granulation of steel slag
To solve the problem of difficult utilization of steel slag, the liquid steel slag was modified and the air-quenching granulation process was carried out to make steel slag into a value-added end product: air-quenching granulated steel slag. The granulated slag was tested to analyze the variation rule of slag properties under different modification conditions. Based on …
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IRON AND STEELMAKING SLAGS: ARE THEY …
slag which is prod uced by granulation technique while the slag for road construction is the form of crystalline come from slow cooling on air. In 2010, 82% of blast furnace
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Granulation and Heat Recovery from Metallurgical Slags
The shape and density of dry in Fig. 11, the CSIRO Dry Slag Granulation (DSG) process 13 Journal of Sustainable Metallurgy Fig. 13 Process flow diagram for SVAI/Primetals Technologies' dry slag granulation system with heat recovery and steam generation [42, 43] (color figure online) Dry granulated Water granulated BF slag BF slag Grounddry ...
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Slag Dry Granulation
Our dry slag granulation technology transforms molten slag from steel furnaces into granules using air stream, eliminating the need for water. The flexibility of the process allows obtaining granules of different sizes and with different ratio …
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SELF-COMPACTING CONCRETE CONTAINING EAF SLAG …
2020. In this research, the objective is to use Electric Arc Furnace Slag (EAFS), a by-product of the steelmaking industry, as an aggregate in concrete. The literature has clearly demonstrated …
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The SLAG-REC ® project for an innovative direct …
Fig. 3 – 3-D representation of the SLAG-REC® machine - "The SLAG-REC ® project for an innovative direct dry granulation of EAF slag" Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search …
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A critical analysis of electric arc furnace (EAF) slag for …
The EAF slag is generally seen as lumps with a grey or black hue, attributed to the presence of Fe 2 O 3 compound in its composition [80, 81]. The EAF slag often exhibits a coarse surface structure characterized by surface pores ranging in diameter from 0.01 to 10 μm [70]. The appearance and physical qualities of EAF slag depend on factors ...
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Centrifugal-Granulation-Assisted thermal energy recovery …
The iron and steel industry (ISI) is pursuing technology breakthroughs to accelerate the transition towards carbon neutrality. Deep cut of CO 2 emission involves with not only technological revolution of producing iron and steel, but also exploiting energy in byproducts and off-process wastes. Molten blast furnace slag (BFS), one of the largest high-temperature …
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On-line slag composition analysis for electric arc furnaces
There are currently very few methods available for analysing slag composition and formation in the EAF and LF. One of the most popular methods to gain information of slag composition is …
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Products › Ironmaking and steelmaking › Slag …
The slag granulation plant comprises three sections: for granulation, dewatering and storage. In the granulation section, the liquid slag is 'quenched' by pouring onto it an excess water stream. The evaporated water will be condensed in a …
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Slag Resource Recovery Via Air Granulation | SpringerLink
This first process was based on water granulation of steel-laden slag, followed by separation of the metal-rich and poor (slag) streams. Safety improvements led to the use of air as a granulation medium and the elimination of water. This created a completely dry granulation (atomization) process and novel slag materials with interesting properties.
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The Effects of Electric Arc Furnace (EAF) Slag on Engineering
Partial or complete replacement of soils by industry waste materials is becoming more prevalent due to its benefits including environmental considerations and improvements in engineering properties of soils. Geotechnical properties of EAF-slag-admixed soils are rarely studied in the literature, and beneficial outcomes are not well known. In this scope, the effect of …
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A critical analysis of electric arc furnace (EAF) slag for …
This article emphasises the importance of electric arc furnace (EAF) slag in the manufacturing of sustainable geopolymer concrete. This review paper examines the chemical composition, …
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Comparing Properties of Concrete Containing Electric Arc Furnace Slag
Electric arc furnace (EAF) slag, one of the SM slags, is produced by refining the process of recycled steel scrap in the electric arc furnace. The main chemical characteristics of EAF slag are its high free calcium oxide (free-CaO) and Fe oxide content. It has been reported that these two compounds cause the volumetric instability of EAF slag.
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Environmental benefit assessment of steel slag utilization …
As drawn in Fig. 2, BOF slag and EAF slag are both produced during the first refinement of steel (Humbert and Castro-Gomes, 2019). BOF slag is produced by adding scrap metal, pig iron, and fluxes into the furnace, and then using pure oxygen to initiate the oxidation reaction at a high temperature of around 1600 °C (Yildirim and Prezzi, 2011 ...
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Dry solidification with heat recovery of ferrous slag
One current example of a slag drum cooling system is the so-called 'Slag-Rec' for dry 'granulation' of EAF slag, which transforms the liquid slag into flat solid pieces by controlling the cooling cycle. ... Verordnung zur Festlegung von Anforderungen für das Einbringen und das Einleiten von Stoffen in das Grundwasser, an den Einbau von ...
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Treatment and characterisation of electric arc furnace (EAF) …
The study shows that while there is a marginal reduction in the early age strength of the Portland Slag Cement mortar, the later age strength does not suffer by replacing up to 20% …
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Association for Iron & Steel Technology
Slag produced by the EAF route, both EAF and LF slag, is a critical waste for the steel industry which nowadays can be only partly utilized for further uses. Tenova developed a methodology for the design of a dry slag granulation process, applicable on both EAF and LF slag, based on CFD modellng validated by industrial trials performed in steel ...
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Valorization of LF slag: the Pittini Group tests Tenova's air
CSIRO has been working on a dry granulation process, integrated with heat recovery, since 2002. It involves a rotary disc that atomizes molten slag to produce liquid droplets, which are rapidly ...
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Creating Value from Waste
The tests prove that the air granulation process of SMS slag can minimize the related environmental impact – reducing CaO (lime) mining and therefore saving natural resources and protecting the landscape – while increasing workers' safety significantly – by overtaking the traditional wet slag granulation methods which entail risks of explosion and dangerous …
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Slag Resource Recovery Via Air Granulation
compared to the 97.5% achieved through water granulation. Later trials with SSAB slag produced air atomized slag granules with 99.9% glass content as compared to the origi - nal glass content of the water granulated slag at 98%. Thus, laboratory scale work . Slag Resource Recovery Via Air Granulation. Link. Link
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Slag Dry Granulation
EAF Slag Granulometry: The granulated slag particles are consistently sized between 0,5 and 5 mm, making them ideal for various secondary applications. EAF Slag Morphology: The …
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Insights into the Valorization of Electric Arc Furnace Slags as
Conventionally, ironmaking slags from the blast furnace (BF) are recycled as SCMs, i.e., ground granulated BF slag (GGBS). Ideally, future slags from electric arc furnaces …
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High-temperature modification and air-quenching …
steel slag. Air-quenching granulation technology of molten slag is using high-pressure air jet to quench the liquid molten slag into granulated slag [7]. The crushing mech-anism and crystallization behavior of air-quenched blast furnace (BF) slag have been studied [8, 9], which has a certain guiding significance for the air-quenching granu-
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Granulation and Heat Recovery from Metallurgical Slags
In this paper, the slag granulation and heat recovery options are reviewed and given a critical evaluation, aiming to provide a basis for future directions in slag handling. Discover the world's ...
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Valorization of EAF and LF Slag Through the Dry Granulation …
This paper presents the results of the industrialized dry slag granulation processes. The granulated slag, coming from the EAF or LF, can be considered new raw material for further …
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RECENT DEVELOPMENTS IN DRY SLAG GRANULATION: …
2.2 Wet Slag Granulation Wet granulation is used in a number of smelters to handle BF slag. Wet granulation uses water to fragment and quench the molten slag. The slag is first granulated via launder granulation and tank granulation. In launder granulation, molten slag is granulated and quenched with pressurized water jets. In tank granulation ...
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