Chemical properties of steel slag | Download Table
Hainin et al. [14] summarized the engineering properties of steel slag and its application advantages for road construction and proposed that the geotechnical characteristics of steel slag needs ...
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Carbon dioxide sequestration on steel slag
The carbonation method of steel slag can be divided into direct and indirect carbonation (Yadav et al., 2017; Shi et al., 2012a).Direct carbonation is a single carbonation reaction step under a dry, moist, or aqueous environment without the aid of extraction agents and is convenient to conduct (Bodor et al., 2013).However, a high temperature, high gas pressure, …
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Chemical, Mineralogical, and Morphological …
The chemical composition, mineralogy, and morphology of steel slag particles can influence both the cementitious characteristics and mechanical properties of steel slag. Two different types of steel slag (BOF and EAF ladle …
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Comprehensive utilization of steel slag: A review
Recently, there have been numerous ways to utilize steel slag. For instance, steel slag's high strength, good wear resistance, and stability make it a successful material for road infrastructure [5, 6].It can also be employed as the raw material in the preparation of cement due to its chemical similarity to Portland cement [7, 8]; It can also be used for wastewater …
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Application of Steel Slag as an Aggregate in Concrete …
Steel slag particles can potentially be used as aggregates in concrete production. However, the volume stability of steel slag is poor, and the direct use of untreated steel slag aggregate …
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Research Progress on the Application of Steel Slag in …
2. Main properties of steel slag Steel slag is a kind of steelmaking by-product with complex composition. According to the different processes in the steel smelting process, steel slag is mainly divided into electric furnace slag, converter slag and flat furnace slag. As steel slag will experience a high
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Influence of steel slag doping on the mechanical properties …
In this paper, a mixture of Na 2 SiO 3 and NaOH was used to form an alkali-excited solution with steel slag (SS) as an additive to improve the solidification and hardening properties of coal gangue (CG) based geopolymers under alkali excitation by replacing the CG portion with SS with mass fractions of 0, 10 %, 20 %, 30 %, 40 %, and 50 %, respectively, under standard …
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An Overview on Performance of Steel Slag in Highway …
arp (blast) furnace (BF) slag and steelmaking (iron making) slag. The steel furnace slag can be further divided into three groups; Basic-oxygen-furna. e (BOF) slag, Electric-arc-furnace (EAF) …
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Chemical, Mineralogical, and Morphological Properties of Steel Slag …
The chemical composition, mineralogy, and morphology of steel slag particles can influence both the cementitious characteristics and mechanical properties of steel slag. Two different types of steel slag (BOF and EAF ladle slags) generated from Indiana steel plants were considered in this study.
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Use of steel slag as sustainable construction materials: A review …
Three methods have been widely employed to improve the reactivity of steel slag and concurrently reduce its potential harm on cement-based host materials: (i) physical excitation, which stimulates the hydration activity by physically grinding steel slag into finer powder (Liu et al., 2016), (ii) chemical excitation, which adds chemical admixtures, such as NaOH, Na 2 SO 4, H …
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Steelmaking Slag for Fertilizer Usage
2.2 Fertilizers made from blast furnace slag and steelmaking slag Iron and steel slag can largely be divided into blast furnace slag and steelmaking slag. Table 4 shows the representative chemical composition of blast furnace slag and steelmaking slag, respectively.5) Approximately 160 000 tons of blast furnace slag are consumed
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Characteristics and environmental aspects of slag: A review
Research on slag can generally be divided into two categories: reuse and environmental effects. Studies of slag reuse fall into three main areas: the utility of slag as a …
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An Overview on Performance of Steel Slag in Highway …
Chemical Mechanical Effect of Steel Slag on Pavement Fig. 1. Flowchart of discussion for this review paper 2. Production of Steel Slag Usually steel slag consists of scarp (blast) furnace (BF) slag and steelmaking (iron making) slag. The steel furnace slag can be further divided into three groups; Basic-oxygen-furnace (BOF) slag,
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An Overview of Precious Metal Recovery from Steel …
The primary slags are divided into ... TYPES AND PHYSICOCHEMICAL PROPERTIES OF STEEL SLAG (SS) ... this phase.10,22 The chemical composition and physical
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Preparation and properties of carbonated steel slag used in …
The reasons for the influence of carbonated steel slag on the properties of cementitious materials are explored from the hydration properties. ... The carbonation methods of SS are divided into direct and indirect carbonation ... The calcium carbonate produced by the carbonation of steel slag can fill the microcracks or pore of the cementitious ...
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Carbonation of steelmaking slag presents an opportunity …
Steelmaking slags (both iron slag and steel slag) are by-products during iron and steelmaking process and have the same properties in the carbonation [30]. Table 1 demonstrates that the main chemical components of steel slag are CaO, S i O 2, MgO, A l …
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A review of research advance on accelerated carbonation of steel slag …
The interaction of carbonation and hydration of steel slag and improvement of properties are discussed. ... Among them, it can be divided into high alkalinity (B﹥2.5), medium alkalinity (1.8﹤B﹤2.5) and low alkalinity (B﹤1.8) SS, according to alkalinity values. ... the main minerals in the SS will undergo the chemical reactions listed in ...
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Waste to wealth: Recovery of value-added products from steel slag
Steel slag, a by-product generated during steel production poses a solid waste disposal challenge. ... Owing to its cementitious or pozzolanic properties it can be used as a blend in Portland cement [29]. ... The third variant uses a pulley as a magnetic harness and can be divided into two categories of electromagnetic type and non ...
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Physical and Chemical Properties of Steel Slag and Utilization
Steel slag is a large discharge of industrial waste slag. Chinese effective utilization rate of steel slag is only 20%, causing great harm to the environment and economy.
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The mechanical strength, microstructure, and transport properties …
The ratio of steel slag to crude steel reaches 15–20 wt % during steelmaking production [1].Its production every year is more than 200 million tons worldwide and more than 100 million tons in China [2].However, most of them are abandoned when the utilized content is only 29 %, which causes land occupation, resource waste, and environmental pollution [3].
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Steel Slag
Selected physical properties of steel slag are shown in Table 10.1. Depending on the used production technology, the steel slag can be divided into a basic oxygen steel slag, an electric …
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Steel slag aggregate property improvement in cold mixed …
Organic modification can be further divided into two types, one is to use acids (hydrochloric acid (Gu et al ... The -NCO groups can be tightly attached by chemical bonding with -OH (mainly present in asphaltene) in asphaltene ... Effect of surface modification on properties of steel slag aggregate and mixture. Construct. Build. Mater ...
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A Review on the Carbonation of Steel Slag: Properties, …
According to the production process, steel slag can be divided into converter (BOF) slag, electric arc furnace (EAF) slag, ladle furnace (LF) reÞning slag, stainless steel (AOD) slag, etc.
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Effect of nano silica, silica fume and steel slag on concrete
Table 3 and Table 4 presents the chemical and physical composition of silica fume from a previous paper that has been studied by the author. Through this analysis the chemical composition in Çakır & Sofyanlı, 2015 Cao is greater than 1% (<1), SiO 2 is<85% (˃ 85), SO 3 is greater than 2% (<2). By Mastali & Dalvand, 2016 in his paper SiO 2 is 85–95%, Al 2 O 3 is …
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Recycling of iron and steel slag for carbon reduction and …
It was concluded that the physical and chemical properties of glass ceramics were better than those of natural marble and ceramic tiles. ... 2.6.1 Direct carbonization of steel slag. Direct carbonization can be divided into direct dry and wet carbonization. The effect of the direct dry carbonization method depends on the carbonization ...
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Preparation and characterization of steel slag-based low, …
In this study, industrial solid waste steel slag was used as supporting material for the first time, and polyethylene glycol (PEG), sodium nitrate (NaNO 3), and sodium sulfate (Na 2 SO 4) were used as low, medium, and high-temperature phase change materials (PCMs).A series of shape-stable composite phase change materials (C-PCMs) were prepared by vacuum …
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The adsorption properties of steel slag-based porous …
The adsorption properties of steel slag-based porous geopolymer for Cu 2+ removal. ... This change in frequency can be attribute to the chemical coordination between –OH and Cu 2+, ... the entire adsorption process can be divided into three steps. Firstly, the metal ions diffuse through the liquid film onto the surface of the adsorbent. ...
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Steel Slag Aggregate
Steel slag (SS) is a by-product obtained during the separation process of molten steel from impurities. Selected physical properties of steel slag are shown in Table 10.1.Depending on the used production technology, the steel slag can be divided into a basic oxygen steel slag, an electric arc furnace slag and a ladle furnace slag (De Brito and Saika, 2013).
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Utilization of steel slag waste as construction material: A …
Further, the production of steel can be divided into two distinct categories. The first method is known as the Basic Oxygen Furnace (BOF) in which the transformation of iron into steel takes place. ... Wu et al. examined the physical and chemical properties of BOF slag blended asphalt mixtures. SEM, XRD, and EPMA tests were done to evaluate the ...
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Application of Steel Slag as an Aggregate in …
Steel slag is a solid waste produced in crude steel smelting, and a typical management option is stockpiling in slag disposal yards. Over the years, the massive production of steel slags and the continuous use of residue yards …
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