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Specifically, basic oxygen furnace slag (BOFS), the largest type of steel slag produced during the addition of fluxing agents in a basic oxygen furnace, has demonstrated potential for use as a replacement for cement [7], [8], fine aggregate (∼ 0.15-4.75 mm) [9], [10] and coarse aggregate (> 4.75 mm) [11] in concrete production and other ...
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Basic oxygen furnace slag (BOFS) is the by-product produced in the process of steelmaking. During the conversion of hot metal from the blast furnace into steel in a basic oxygen furnace, fluxes such as limestone, dolomite, etc. are added into molten iron for the intention of eliminating the impurities in it and forms BOFS after being cooled and ...
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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 content. Carbonation …
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In addition to iron and steel products, the manufacturing processes generate many kinds of solid byproducts, which are discharged in the form of dust, sludge, ash, and slag. Basic oxygen furnace (BOF) slag is one of the byproducts from steel-making processes, and producing one ton of steel normally generates about 0.1–0.15 tons
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Basic Oxygen Furnace (BOF), atau dalam bahasa Indonesia sering disebut sebagai "tanur oksigen dasar", adalah salah satu dari dua teknologi utama yang digunakan dalam industri pembuatan baja untuk menghasilkan baja cair. ... seperti batu kapur digunakan untuk menyeimbangkan kandungan oksida dalam campuran dan membantu dalam pembentukan …
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Basic oxygen furnace slag (BOFS) is a typical industrial waste product generated during the process of metallurgical operation [[8], [9], [10]] and the processing of 1 ton of steel manufacturing results in the generation of approximately 100–200 kg of BOFS [11, 12].
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Basic oxygen furnace (BOF) slag successfully treats leachates by increasing the pH, which promotes precipitation of metal ions and therefore retards their displacement. BOF slag can be used as construction material for permeable reactive barriers due to its high acid neutralization capacity in the treatment of acid mine drainage. A BOF slag PRB ...
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To avoid the volume expansion of basic oxygen furnace (BOF) slag for use in building materials, a hot slag modification process was proposed to reduce free CaO (f-CaO) …
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Basic oxygen furnace slag (BOFS) is a by-product from the steelmaking and refining processes. BOFS presents an excellent capacity to remove phosphorous from aqueous solutions [18] and has been widely used in various fields, such as soil improvement, landfills, and marine ecosystem conservation. Nevertheless, the free-CaO contained in BOFS will ...
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Basic oxygen furnace (BOF) slag generated during steel production exemplifies the case: considerable amounts of this material are available (an estimation of 120–240 Mt in 2016 was calculated using the reported global production of steel via oxygen furnace [3] with a slag generation rate of 100–200 kg per ton of steel [4]), and several ...
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Carbonate treatment was tested as a means to mitigate the generation of alkaline leachate from basic oxygen furnace (BOF) slag. BOF slag was treated with 0.1, 0.5, and 1.0 M concentrations of NaHCO 3 solution for 48 h at a liquid/solid ratio of 5 L/kg. At 1.0 M NaHCO 3, the pH of the leachate decreased from 12.0 to 11.3 because less free CaO was dissolved from …
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Basic oxygen furnace slag (BOF) is a byproduct from the conversion of mineral ore into iron. It is the largest volume byproduct from metallurgical mills and has been used as aggregate in asphalt pavement for a long history all over the world. Lack of superior natural crushed stone and negative dumping effects on environment promote the ...
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Basic oxygen furnace slag, electric furnace slag and open hearth furnace slag are the most common by-products in steelmaking industry. Among these three by-products, basic oxygen furnace slag is more attractive to investors due to its large output and less payout. As a result, BOF slag [1] is produced in horrendous numbers.
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The purpose of this study is to investigate the mixture performance and the sound absorption characteristic of porous asphalt mixture with different percentages of basic oxygen furnace (BOF) slag. Mixtures made with 0%, 25%, 50%, 75% and BOF slag by volume as a coarse aggregate substitution were considered.
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To avoid the volume expansion of basic oxygen furnace (BOF) slag for use in building materials, a hot slag modification process was proposed to reduce free CaO (f-CaO) in the molten slag. A transient 3D numerical model of BOF molten slag modification by SiO2 particles was established. The flow and heat transfer of molten slag, movement and …
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Basic oxygen furnace slag is generated in the production of steel from molten iron in a basic oxygen furnace. In the UK, it derives from the integrated steelworks of British Steel in Scunthorpe and Tata Steel in Port Talbot. It contains high levels of CaO, Fe2O3 and MgO and relatively low levels of SiO2 and Al2O3 relative to the other ferrous ...
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On the other hand, Basic oxygen furnace slag (BOFS) is also a major solid waste generated in the process of steel production, and its carbon emissions are much lower than GGBS. The production of BOFS accounts for 15–20 % of crude steel production, and due to stability issues, its utilization rate in China is only around 20 %, culminating in ...
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Basic Oxygen Furnace (BOF) Slag Dart Machines; Slag Dart Machines. Monocon is pioneer of Slag Control solutions for primary steel making in Basic Oxygen Converters, with more than 100 Dart Machines used in 40 Steel Plants throughout the …
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Approximately 21 million tons of steel industry slag are produced each year in the United States, and many productive commercial uses of slag have been developed (e.g., road bed, fill material). However, because slag contains heavy metals at concentrations that are higher than in most soil, questions have been raised regarding the need to evaluate the potential …
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This later is a basic oxygen furnace steel slag, generated during the steelmaking operations. The sediments were generated in dredged operations from the east zone of Dunkirk harbour (Fig. 5). The slag is comes a specialised company in the steel manufacturing. Download: Download full-size image;
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This study investigates the carbon dioxide (CO 2) sequestration potential of three different basic oxygen furnace (BOF) slags (IHE-3/15, IHE-9/17, and Riverdale) subjected to simulated landfill gas (LFG) conditions (50% CH 4 and 50% CO 2 v/v) in a series of batch and column experiments. Batch experiments were performed at different moisture contents (0%, …
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One of such possible ACMs could be basic oxygen furnace (BOF) slag. BOF slag is an industrial by- product of the steel industry with comparable chemical composition to OPC (Martins et al., 2021;
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Chemistry of Steelmaking by Basic Oxygen Furnace. satyendra; December 8, 2013; ... It also forms a silicate slag which reacts with the added lime and calcined dolomite to form a basic slag. Since the oxidation of Si is the main heat source, its quantity in HM determines the quantity of the cold charge (scrap, and pig iron etc.) which can be ...
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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 …
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In the last decades, the by-products (basic oxygen furnace slag and electric arc furnace slag) from the steel industry have attracted considerable interest from researchers to investigate them as appropriate wetland substrates through various methods such as batch tests (Bowden et al., 2009, Barca et al., 2012, Jha et al., 2004, Jha et al ...
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In a previous study (Qi et al., 2012), humic-like acid (HLA) formed in the presence of carbonated basic oxygen furnace (BOF) steel slag (hereafter referred as "steel slag") was found to be strikingly similar to HLAs formed in the presence of zeolite and birnessite (e.g., highly aromatic, high molecular weight), and enhancing effect of steel ...
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The Basic Oxygen Steelmaking process differs from the EAF is that BOF is self-sufficient in energy. The primary raw materials for the BOP are 70-80% liquid hot metal from the blast furnace and the steel scrap need to be balanced. These …
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The recycling of basic oxygen furnace (BOF) slag is largely limited by its free lime and free magnesia content leading to highly problematic swelling, preventing civil engineering applications. Moreover the presence of phosphorus is a limited factor for their reuse in iron and steel industrial processes.
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Basic oxygen furnace (BOF) slag aggregates exhibit several favourable technical and environmental characteristics compared with natural stone aggregates, making them potentially valuable road construction materials. BOF slag-bitumen mixes have shown better resilient moduli, rutting resistance, bonding and moisture damage resistance and ...
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Basic oxygen furnace slag - BOS (also called LD-converter slag)is formed during the conversion of hot metal from the blast furnace into steel in a basic oxygen furnace. In this process the hot metal is treated by blowing …
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