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basic oxigen furnace slag

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basic oxigen furnace slag

Physical and Chemical Characteristics of Blast Furnace, Basic Oxygen

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 …

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Chemical, Mineralogical, and Morphological Properties of …

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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Enhanced humification by carbonated basic oxygen furnace steel slag

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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Performance characteristics of asphalt mixture with basic oxygen

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 …

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Phases Reconstruction and ing Modification of Basic Oxygen Furnace

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 …

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Synergistic treatment of blast furnace slag and basic oxygen furnace

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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Environmental application of basic oxygen furnace slag …

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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Basic Oxygen Furnace steel slag aggregates for phosphorus treatment

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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Sustainable Application of Pyrolytic Oxygen Furnace Slag in …

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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Basic oxygen furnace and ground granulated blast furnace slag …

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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Stabilization of basic oxygen furnace slag by hot-stage …

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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Optimization of Mineralogy and Microstructure of Solidified Basic …

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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Ladle Furnace Slag: Synthesis, Properties, and Applications

The conversion of iron to steel results in different types of steel slags. Depending on how these slags are formed, they are classified into basic oxygen furnace (BOF) or electric arc furnace (EAF) slag. Further refining of the steel products from the BOF and EAF in a ladle furnace (LF) results in the production of ladle refined furnace …

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Air granulated basic Oxygen furnace (BOF) slag application …

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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Characteristics of Different Types of Basic Oxygen Furnace Slag …

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 recycling and reuse of steelmaking slags — A review

BOS slag is also known as BOF (basic oxygen furnace) slag, and the choice of acronym depends on the source material; however, herein we will use BOS as a default. Around 20 million tons of slag is produced annually in Europe, half of which is produced is BOS slag ( Liu et al., 2016 ), meaning that large quantities of industrial by-products are ...

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Basic Oxygen Furnace: Most Efficient Technologies for …

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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Enhanced humification by carbonated basic oxygen furnace steel slag …

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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Evaluation of the Volume Stability and Resource Benefit of Basic Oxygen …

Basic oxygen furnace slag (BOF) is a widespread type of steel slag, which is workable in antiskid and abrasion resistance due to predominant textures and abundant angularity [19 – 21]. Therefore, applying BOF slag as raw materials for roads construction seems to be an effective way to save precious natural aggregates [ 22 – 24 ].

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Utilisation of aged and unaged basic oxygen furnace steel slag

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 Steelmaking Slag: Formation, Reaction, …

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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Effect of basic oxygen furnace slag type on carbon dioxide

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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Improving the early reactivity of activated basic oxygen furnace slag

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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Chemical, Mineralogical, and Morphological Properties of Steel Slag

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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Utilization of air granulated basic oxygen furnace slag as a …

Basic oxygen furnace (BOF) slag is the tremendously available byproduct of steel-making process generating 90–150 kg of the slag for every tonne of crude steel (Guo et al., 2018). In Europe, approximately 10 Mt/year of BOF slag is produced, and approximately 23% directly stacked piles occupy the land resources ( Horii et al., 2013 ).

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Basic oxygen furnace slag for road pavements: A review of …

Basic oxygen furnace (BOF) slag aggregates exhibit several favourable technical and environmental characteristics compared with natural stone aggregates, …

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Characteristics and mechanisms of phosphate adsorption onto basic

Basic oxygen furnace slag (BOF slag in short) is a final waste material in the basic oxygen furnace steel making process. In blast furnace iron making, limestone (as fluxes) is added to react with the gangue minerals (iron ore and coke) to form iron slag. Slag is separated from the molten iron owing to the different specific gravity of molten ...

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Basic oxygen furnace slag: Review of current and potential …

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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Basic oxygen furnace slag: Review of current and potential uses

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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Basic Oxygen Furnace Slag Characteristics and Properties

Basic oxygen furnace slag is an significant environmental liability produced by the steel industry, considering the volume of material produced and its specific physical and chemical characteristics. To further understand the advantages and limitations of BOF slag aggregate and to establish its role in the replacement of natural sand in ...

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