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A Comprehensive Review on the Ground …

Blast-furnace slag and its derivative GGBS are examples of industrial byproducts that are primarily utilized as supplemental cementitious products in cement and concrete production. Its self-hydration feature, in …

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Investigation of Phosphate Removal Capability of Blast Furnace Slag …

Blast Furnace Slag (BFS) is a by-product of iron making with a potential to be used in different applications. ... The concern with phosphorous as a water pollutant became serious after 1970s due ...

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Novel resource utilization of fly ash and blast furnace slag …

In this work, AACM and FAACM were prepared by using blast furnace slag (BFS) and fly ash (FA) as raw materials to solve the problem of large accumulations of solid waste. According to relevant researches, BFS and FA are not classified as hazardous waste, and BFS/FA-based alkali-activated cementitious materials have no risk of polluting the ...

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Study on the solidification/stabilization of cadmium …

Granulated blast-furnace slag (GGBS) is a powdered material obtained by quenching molten iron slag from iron smelting furnaces with water or steam, followed by drying and grinding. GGBS is similar in composition to cement but is more cost-effective and environmentally friendly, making it a popular alternative to cement for curing contaminated ...

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Expanding Blast Furnace Slag Without Air Pollution

Expansion of blast furnace slag causes emissions of hydrogen sulfide, creating an air pollution problem common throughout the steel industry. This paper describes a new process, called …

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Unlocking the potential: A comprehensive review on blast furnace slag and silica analog adsorbents for sustainable …

Blast furnace slag (BFS) is the residue and solid waste from iron–steel metallurgical industry, whose storage not only occupies a large amount of land resources but also causes …

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Use of blast furnace slag in cementitious materials for …

The composition of the blast furnace slag changes depending on the ores, the type of fuel used and impurities in the coke, when it is used, among other factors (Oner and Akyuz 2007). Slag from industries that use charcoal-fueled blast furnaces generally produce acidic slag while slag from coke-fired furnaces generate basic slag.

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Typical chemical composition of blast furnace …

The low recycling for reuse of LS slag was mainly attributed to its volume instability i.e. disintegration of slag during cooling due to phase transformation and wide-ranging slag composition [20 ...

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Assessment Of Atmospheric Emissions From Quenching Of Blast Furnace …

The complete report, entitled "Assessment of Atmospheric Emissions from Quenching of Blast Furnace Slag with Blast Furnace Slowdown Water, "(Order No. PB84-172 493; Cost: $11.50, subject to change) will be available only from: National Technical Information Service 5285 Port Royal Road Springfield, VA 22161 Telephone: 703-487-4650 The EPA ...

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Dangerous Emissions in Blast Furnace Operations

Dangerous emissions of SO 2 and H 2 S are found in molten slag granulation sites; NOx are found from the hot stoves; heavy metals (mainly Zn and Pb) are found in the sludge …

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Mechanical properties and environmental characteristics of …

The high content of heavy metals in electrolytic manganese residue (EMR) makes it difficult to utilize in engineering, and direct disposal can pose a threat to the environment. This study uses EMR as a raw material combined with steel slag (SS) and blast furnace slag (GGBS) to prepare electrolytic manganese residue-based cementitious material (ESGM) under the …

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Artificial Neural Network-Based Non-Linear Modeling and

Blast furnace slags are formed by CaO-SiO2-Al2O3-MgO systems and have several physical characteristics, one of which is viscosity. Viscosity is an important variable for the operation and blast furnace performance. This work aimed to model viscosity through linear and non-linear models in order to obtain a model with precision and accuracy. The best model …

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Review in application of blast furnace dust in wastewater …

Blast furnace dust (BFD) is the solid powder and particulate matter produced by dust removal process in ironmaking industry. The element composition of BFD is complex, and a direct return to sintering will lead to heavy metal enrichment and blast furnace lining corrosion. In recent years, the application of BFD in wastewater treatment has attracted widespread …

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Persulfate activation by nanoscale zero-valent iron …

Blast furnace slag is the main solid waste in the steel industry with an annual discharge of nearly 250 million tons in China (Wang et al., 2021). It is a porous silicate material with the main ingredients of silica, magnesium oxide, aluminum-silicates and calcium oxide and is a potential carrier material for nZVI.

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Blast-furnace slag

Blast furnace slag (BFS) which is defined "as the non-metallic product consisting essentially of silicates and alumina silicates of calcium and other bases, that is developed in a molten condition simultaneously with iron in a blast furnace" by ASTM C 125-16 (2016) has been widely used in construction industry for more than 80 years. When the mixture of iron-ore, …

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Characteristics of Red Mud–Blast Furnace Slag Composite …

In this work, red mud (RM) and blast furnace slag (BFS) were used to prepare a red mud–blast furnace slag composite low-pH cementitious material (RM-BFS). The effect of urease-producing microorganisms (UPM) on the pH value and mechanical strength of the RM-BFS was systematically investigated, and the mechanism analyzed by combining X-ray ...

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CN117619120A

The invention relates to a method and a system for removing pollutants in slag flushing steam of blast furnace, which can realize ultralow emission, and adopts a method of leading steam out from the lower part of a slag exhaust drum to a separate deacidification tower, neutralizing and absorbing acidic pollutants in the slag flushing steam by using spray alkali liquor, adjusting the …

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Life cycle assessment of blast furnace ironmaking processes: …

The green arrows indicate the valuable outputs of the system: mainly blast furnace gas, coke oven gas, slag, etc. The black arrows indicate major pollutant emissions from the system, mainly gas and liquid pollutants. The main process in case 1 is the part covered by the red line, and the main process in case 2 is the part in the green wire ...

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Ferrous and non-ferrous metals: pollution inventory reporting

sulfur dioxide (SO 2), from sinter plant, hot blast stoves, arc furnace charging, melting and refining, slag processing, coke oven under-firing, ammonia incinerator tail gas, blast furnace cast ...

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Blast Furnace Ironmaking

The smelting process of blast furnace is carried out in the shaft furnace of a closed countercurrent reactor and heat exchanger. The complex physical changes and chemical reactions are completed in the process of the countercurrent movement of the charge and gas in which the raw materials containing iron oxide (sinter, pellets, etc.), coke, slag flux (limestone) …

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A review of metallurgical slag for efficient wastewater …

The approach of metallurgical slag used to remove pollutants in wastewater is considered to achieve the purpose of "using waste to treat waste". ... reaction conditions, and recyclability of metallurgical slag such as steel slag, blast furnace slag, red mud, copper slag, and manganese slag are summarized and compared. Graphical abstract ...

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Centrifugal-Granulation-Assisted thermal energy recovery …

Blast furnace slag (BFS) is the primary co-product generated at a rate of ∼100–400 kg per ton of crude steel in the course of iron and steel manufacturing [5].It is discharged from the blast furnace at 1450 °C ∼ 1550 °C with high-grade heat totaling about 1770 MJ per ton slag [6].The BFS has long been recognized as non-hazardous material with versatile applications in …

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Synthesis of Micro-Electrolysis Composite Materials from Blast Furnace …

Keywords: blast furnace dust, micro-electrolysis, organic pollutants, degradation. 1. Introduction. Blast furnace dust (BFD) is discharged with blast furnace flue gas during the iron and steel smelting process, and is collected by dry bag dust removal. ... including the use of blast furnace slag and glass waste to prepare foamed glass-ceramics ...

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From waste to waste: iron blast furnace slag for heavy metal …

Blast furnace slag (BFS) is considered a cheap sorbent for the get rid of Co 2+ and Pb 2+ ions from aqueous media. The nonmodified slag is characterized using X-ray diffraction (XRD), X …

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Activation of ultra-fine steel slag and ground granulated blast furnace …

As the steel slag (SS) doping gradually increases to replace ground granulated blast furnace slag (GGBFS), the number of Si-O and Al-O tetrahedral units in the glassy phase of the GGBFS decreases. This results in a slower pozzolanic reaction, a lower dissolution rate of calcium hydroxide (CH) in the calcium carbide slag (CS), and an increase in ...

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Adsorptive Removal of Five Heavy Metals From Water Using Blast Furnace …

Heavy metals can be serious pollutants of natural water bodies causing health risks to humans and aquatic organisms. The purpose of this study was to investigate the removal of five heavy metals from water by adsorption onto an iron industry blast furnace slag waste (point of zero charge (PZC) pH 6.0; main constituents, Ca and Fe) and a coal industry fly ash waste (PZC …

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Air Pollution Impacts When Quenching Blast Furnace Slag …

to discharge of coke plant waste waters is. to use it, untreated, to quench blast fur- nace slag. The question arises, will this re- sult in a significant increase in emissions. to the atmosphere? To …

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Surface microstructure of magnetic blast furnace dust and …

The steel industry is crucial for the economy and defense of a country, supporting its infrastructure development and technological advancement [1].Blast furnace (BF) steelmaking accounts for over 70 % of global iron (Fe) production but also generates substantial solid waste, including blast furnace dust (BFD) from the gas purification process [2], [3].

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Modeling Tetracycline Adsorption onto Blast Furnace Slag …

Ground granulated blast furnace slag (GGBS) is a primary industrial waste product of iron production, and its improper disposal has been a serious environmental problem. This study aims to modify the GGBS using oxalic acid (GGBS-Ox) for the adsorption of tetracycline (TC) from an aqueous solution. GGBS-Ox was synthesized and characterized via FTIR, XRD …

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The influences of MSWI fly ash washing and blast furnace slag…

The influences of MSWI fly ash washing and blast furnace slag/bottom ash ratio on low-carbon cementitious materials. Author links open overlay panel Tong Zhao a b c, Siqi Zhang a b c, Huifen Yang a b c, ... thereby reducing chloride content and pollutant concentrations. Consequently, BA was classified as general solid waste (Dou et al., ...

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Blast furnace cast house pollutant suppression

Method and apparatus for suppressing formation of pollutants in a blast furnace casting system by occluding oxidizing gases, including ambient air, from the molten iron and slag discharged from the furnace. US4357003A - Blast furnace cast house pollutant suppression - Google Patents ...

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