The basic oxygen furnace (BOF) slag use as raw material for cement production carries economic, environmental and technical benefits to the cement industry, reducing energy costs, material consumption and waste storage areas. This study evaluates the partial replacement of blast furnace slag by BOF slag in the production of slag …Web
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Basic oxygen furnace (BOF) slag is a main byproduct produced during the converter steelmaking process. The poor grindability of BOF slag limits its added-value application. In this paper, the grinding characteristics of unmodified and reconstructed BOF slag were compared. Additionally, the grinding property of reconstructed steel slag was …Web
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Steel slag is mainly composed of impurities in steelmaking charge, slagging materials (limestone, iron ore, dolomite, etc.), eroded furnace linings and oxides of many elements formed by oxidation in the furnace charge [1,2].The output of steel slag accounts for about 15–20% of the total steel output [].Mass production and accumulation of steel …Web
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Basic Oxygen Furnace slags are byproducts of the conversion of pig iron to steel in a Basic Oxygen Furnace (BOF). The operating principle of pig iron refining is to blow oxygen in order to oxidize carbon and then decrease the carbon content. During this operation, lime is added in the converter in order to fix undesirable elements in slag and ...Web
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Steel slag are of three types, they are classified as Basic Oxygen Furnace (BOF), electric arc furnace (EAF) and Ladle Furnace slag (LFS), detailed description is given below [8][9][10][11][12 ...Web
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However, the absorption of bitumen to basic oxygen furnace (BOF) slag with outburst pore characteristic is still not clear. To further understand the service characteristics and improve the application quality of BOF slag, the absorption behavior of bituminous components to BOF slag was explored in this paper.Web
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Here, we report blended Portland slag cement, in which ordinary Portland cement was enhanced by basic oxygen steelmaking slag (BOF). The environment-friendly, self-sensing concrete reported in Reference [ 41 ] is expanded for advanced understanding on the mechanical and chemical properties of the BOF-enhanced cement.Web
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It is generally agreed that aqueous carbonation of basic oxygen furnace slag (BOFS) is a promising and effective strategy to sequestrate CO 2 and enhance the slag …Web
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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 …Web
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Basic Oxygen Furnace (BOF) slag is a major waste product generated during the steelmaking process. In India and in most industrial countries, the use of BOF slag as a road ballast and land filler has had a very long history. This being a low end use, a study was conducted to examine the possibility of converting the slag into a hydraulic …Web
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Basic Oxygen Furnace Slag (BOF), as alternatives for aggregate in asphalt pavement construction, is beneficial to the environment by reducing land occupation and resource consumption. However, the quantitative effects on energy consumption and emissions reduction remains poorly understood due to the unavailability of local life cycle inventory. …Web
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Highlights Novel hot-stage carbonation approach to Basic Oxygen Furnace (BOF) slag presented. Optimum carbonation rate at boundary of equilibrium (830–850 °C at 1 atm CO 2). Limited effect of pressure (0.2–20 bar CO 2) and steam (8 bar H 2 O) on CO 2 uptake. Slag CO 2 uptake proportional to particle size, surface area and free lime …Web
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It is generally agreed that aqueous carbonation of basic oxygen furnace slag (BOFS) is a promising and effective strategy to sequestrate CO 2 and enhance the slag properties for use as a construction material. However, the handling of wastewater produced in the aqueous carbonation route is still a challenge. This work investigates the impact of …Web
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Basic oxygen furnace slag is considered a potential material for the replacement of natural aggregate in Portland cement concrete due to its similar physical characteristics. Therefore,...Web
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This carbonation reaction is a carbon uptake process which can be employed to capture and store carbon dioxide in steel slag for emission reduction (Huijgen et al., 2005). It is reported that one kilo of basic oxygen furnace slag can capture 215 g of carbon dioxide at the specific conditions (Chen et al., 2016).Web
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The LD slag is utilized as a raw material for concrete production, road construction, railway ballast, ... "The use of waste basic oxygen furnace slag and hydrogen peroxide to degrade 4-chlorophenol," Waste Manage., 19, 495–502 ... "Use of steel works slag in Europe," Waste Manage., 16, No. 1–3, 59–63 ...Web
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Carbonation treatment of steel slag fines in aqueous conditions were the most widely applied method. Ling et al. investigated carbonated BOF (Basic Oxygen Furnace) slag fines in a various solid to liquid ratios, the results showed that the carbonated slag fines can improve the hydration process of blended cement [29].Web
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Abstract. To avoid the volume expansion of basic oxygen furnace (BOF) slag for use in building materials, a hot slag modification process was proposed to …Web
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Steel slag, in particular, basic oxygen furnace slag (BOF-S) – a by-product in the steelmaking industry – is an environmental challenge due both to the large volume …Web
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It may be concluded that basic oxygen furnace slag can be used as a concrete aggregate if the grading of fine slag aggregates coarsened by its slow hydration is improved by …Web
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AOD (argon oxygen decarburization) slag, and LM (ladle metallurgy) slag, BOF (Basic Oxygen Furnace) slag is more difficult to treat due to its higher basicity. Yet, because BOF slags make up almost half of all steelmaking slags, their valorization is key, both from an environmental and economic perspective [10]. In the past decades, utilization ...Web
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Keywords: steel furnace slag; electric arc furnace slag; basic oxygen furnace slag; ladle metallurgy furnace slag; argon oxygen decarburization slag; concrete 1. Introduction As a by-product of the various processes of smelting metallic ores, slags are a potentially useful commodity in civil infrastructure applications.Web
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Applying basic oxygen furnace (BOF) slag as aggregate in asphalt mixture is continuously investigated due to the increasing shortage of natural aggregate in recent years. However, the negative effect of BOF’s expansion in water greatly limits its further application in pavement construction. To address this problem, this paper studied …Web
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open access This study evaluates the air granulated BOF slag potential as a cementitious material by comparing the granulated and conventionally cooled slags. The …Web
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Basic oxygen furnace slag is considered a potential material for the replacement of natural aggregate in Portland cement concrete due to its similar physical …Web
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12 0– 180 kg of basic oxygen furnace and electric arc furnace slags per ton of steel produced, and 3 0– 80 kg of ladle furnace slag per ton of steel trea ted with secondary metallurgy pro- cesses.Web
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This study explores the feasibility of developing carbon dioxide (CO 2) fixation and utilization as supplementary cementitious materials (SCMs) using basic oxygen furnace slag (BOFS) through a high-gravity carbonation process.The developed process is considered as a cleaner approach, compared to convention treatment processes in …Web
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An attempt to improve the compressive strength development of BFS cement was made by Miyazawa et al. to widen the usage of ground granulated blast furnace slag in reinforced concrete constructions. Reportedly, they improved the short-term compressive strength of BFS concrete by increasing the C3S content of clinker up to 69% at low …Web
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Basic oxygen furnace slag is considered a potential material for the replacement of natural aggregate in Portland cement concrete due to its similar physical characteristics. Therefore, in the present work, the slag was analyzed by Nitrogen sorption porosimetry, elemental analysis, mineralogical analysis, and volume stability. On the …Web
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Furthermore, steel slag aggregates perform well in prefabricated elements, such as concrete pavers [29,44], concrete blocks [45], and cementitious material in prefabricated concrete [26]. Formulating more eco-efficient cement-based composites becomes a promising strategy to reduce CO 2 emissions and optimize cement use [46].Web
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In the case of carbonation reaction using basic oxygen furnace slag, the gas-phase mass transfer coefficients varied with the centrifugal acceleration to the 0.33 power 18, while the liquid-phase ...Web
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Basic oxygen steelmaking (BOS) slag, a product of hot metal element (e.g., Si, Mn, Fe, P) oxidation and flux (e.g. lime, dolomite) dissolution, plays a critical role in the production of high-quality crude steel, although its behavior inside the BOS vessel (formation and reaction with metal droplets and gas) is still not clear and its recycling has …Web
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LFS works properly as filler, presenting good adhesion with the bitumen. ... (BFS), Electric Arc Furnace Slag (EAFS) and converter slag (Basic Oxygen Furnaces Slag – BOFS) [1], ... Behavior of self compacting concrete containing ladle furnace slag and steel fiber reinforcement. Mater. Des., 59 (2014), pp. 454-460.Web
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