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The slag generated from a steelmaking cycle is later processed, and the final product after processing is referred to as basic-oxygen-furnace slag (BOF slag). The chemical reactions occurring during the removal of impurities determine the chemical composition of the basic-oxygen-furnace slag [1, 3, 5]. 2.2.
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Basic Oxygen Furnace (BOF) steel making or Basic Oxygen Furnace Steelmaking (BOS) or Linz-Donawitz-Verfahren steelmaking or the oxygen converter process is a method in which both molten pig iron and steel …
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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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Valorization of basic oxygen furnace (BOF) slag is of significant importance for mitigation of the steel production's environmental impact. The present work aims to investigate the influence of SiO 2 addition and oxygen partial pressure on the mineralogical modification of a typical industrial BOF slag. The slag basicity (mass ratio …
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Basic oxygen furnace (BOF) slag is obtained during conversion of iron to steel or pig iron refining process as a by-product. During the operation, carbon amount is dwindled and oxidized by rushing the oxygen and neutral gas into the BOF to reduce the carbon content in the pig iron. The procedure further involves addition of lime and …
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As an industrial waste, basic oxygen furnace (BOF) slag is an ideal substitute for natural rubble and sand. However, its potential instability of volume restricts the application of the BOF slag in engineering. This study aims at investigating the volume stability and mechanical properties of BOF slag and its application as an aggregate in …
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1. Introduction. The recycling of basic oxygen furnace (BOF) slag is an important challenge for steelmaking in order to reduce landfilling, to alleviate the pressure on natural resources and to reduce greenhouse gas emissions — mostly CO 2.Volume is huge since about 100 kg of BOF slag are produced per ton of steel.. BOF slag, a by …
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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 …
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a r t i c l e i n f o Article history: Received 6 December 2016 Received in revised form 19 April 2017 Accepted 5 May 2017 Keywords: Basic oxygen furnace slag Road pavement Technical characteristics Volumetric expansion Moisture damage Heavy metal leaching a b s t r a c t Basic oxygen furnace (BOF) slag aggregates exhibit several favourable ...
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Basic oxygen furnace (BOF) slag is the by-product of the basic oxygen converter steel-making slag. Per each ton of steel generation, 90–110 kg of BOF slag is produced [9]. In Europe, the total production of steel furnace slag was 15.7 Mt in 2018.
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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 …
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Accelerated carbonation of industrial by-products such as yellow phosphorus slag (YPS) and basic oxygen furnace slag (BOFS) is an effective method to convert …
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Basic oxygen furnace (BOF) steel slag is a main by-product in steelmaking, and its valorization is therefore of considerable interest, from a metal-recovery …
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This paper provides an overview of the different types of steel slag that are generated from basic-oxygen-furnace (BOF) steelmaking, electric-arc-furnace (EAF) …
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Accelerated carbonation of basic oxygen furnace (BOF) slag in a slurry reactor containing metalworking wastewater was investigated in this study. Various operational parameters including the type of metalworking wastewater, reaction time ( t ), liquid-to-solid (L/S) ratio, gas flow rate ( Q ), and slurry volume ( V ) on performance of …
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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 slag (BOF slag), also known as Linz-Donauwitz slag, is an industrially by-product of the steel industry and produced during the converter process. In this research we have investigated the effect of grinding aids and particle fineness on the hydration of potassium citrate activated BOF slag. It was investigated …
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1. Basic oxygen furnace (BOF) slag is an industrial by-product of iron and steel industries and accounts for 15–20% of steel production (Zhang et al. 2012, Xiang et al. 2016). It is produced during...
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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 …
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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 of the material that is produced ...
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Carbonated basic oxygen furnace steel slag (hereinafter referred to as "steel slag") is generated during iron and steel manufacturing and is often classified as waste. The effect of steel slag on humification process was investigated. Catechol, glycine and glucose were used as model humic precursors from degraded biowastes.
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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 …
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Rapid cooled basic oxygen furnace slag (RC-BOF-S) is derived from a new slag process called Baosteel Slag Short Flow, which involves treating molten steel slag with compressed air and cooling water (Wang & Chen, 2016).
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This is because steel slag (e.g., basic oxygen furnace slag, BOFS) contains 25–45 wt% of calcium oxide (CaO) [12], which can be carbonated very rapidly with CO 2 to produce calcium carbonate according to Eqs.
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Basic oxygen furnace (BOF) slag aggregates exhibit several favourable technical and environmental characteristics compared with natural stone aggregates, …
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1. Introduction. Steel slag is a common by-product of the steelmaking industry, and its output is about 10% to 15% of steel production in the world [1,2,3].As a major type of steel slag, basic oxygen furnace (BOF) slag has strong alkalinity, rich angularity, tough surface characteristics and relatively good mechanical properties …
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The basic oxygen steelmaking (BOS) process produced over 70% of the global crude steel in 2018,[1] generating 100 to 150kg of slag ("BOS slag") for every tonne of crude steel produced. BOS slag,aproductofhotmetalelement(e.g.,Si,Mn,Fe,P)oxidation and flux (e.g., lime, dolomite) dissolution, plays a critical role in the production of
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Steel-making slag is known as one of the alkaline residues and accounts for 15–20 wt% of the total steel production in China [4, 5]. Among the slags generated, basic oxygen furnace slag (BOFS) contributes about 70% [6]. BOFS has low hydration reactivity due to the presence of a very little amount of tricalcium silicates [7, 8].
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Against the backdrop of the limited industrial application and low added value of precipitated calcium carbonate produced through the indirect carbonation of basic oxygen furnace slag (BOFS), this study proposed a simple approach (extracting Ca2+ from BOFS using ammonium chloride (NH4Cl) and subsequently optimizing the …
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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 oxygen to remove carbon and other elements that have a high affinity to oxygen. The slag is generated by the addition …
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1. Introduction. Basic oxygen furnace (BOF) slag, also referred to as converter steel slag [1], [2], is the main solid waste by-product of the steelmaking industry.It is generated during the refinement of pig iron to raw steel [3], [4], [5].The worldwide crude steel production was around 1864 million tons in 2020 [6].For each ton of crude steel …
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Basic Oxygen Furnace (BOF) steel slag aggregates from NW Spain were tested in batch and column experiments to evaluate its potential use as a substrate in constructed wetlands (CWs). The objectives of this study were to identify the main P removal mechanisms of BOF steel slag and determine its P removal capacity. Also, the …
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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 …
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1. Introduction. In 2022, global crude steel production reached 1,885,738 million tons, marking increase of 0.2 % compared to 2020 [1].Basicity oxygen furnace (BOF) slag and blast furnace slag (BFS), as prominent solid wastes in the steel industry, have seen rising emissions, which negatively affects the development of the steel …
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