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2 capture, Ladle furnace slag, Sustainable industry, Waste valorization Received: April 19, 2023; revised: August 04, 2023; accepted: September 26, 2023 DOI: 10.1002/cben.202300024 This …
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The annual ladle furnace slag output has exceeded 20 million tons. Currently, most ladle furnace slag is treated via stacking. However, slag generally contains heavy …
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The ladle furnace slag (LFS) is a by-product of the steelmaking process, generated from an additional steel refining process that aims to reduce the content of sulfur and …
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Slag Composition: The composition of furnace and ladle slag is often very complex. The slags that form in electric furnace melting result from complex reactions between silica (adhering sand and dirt from casting returns), oxides from scrap, other oxidation by-products from melting and reactions with refractory linings.
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The supply consumption of ladle furnace slag (LFS) is a prominence of recent researches and is extensively considered. In this work LFS has the potential to be utilized as the main raw material for producing glass and glass-ceramics because of its chemical compositions similarities to the silicate glass materials. Three borosilicate glass ...
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During tap some of the furnace slag is carried over into the ladle and will react with alloys that were added during (or after) tap. The following diagram is the key to understanding the interactions between the components in the steel and the components in the slag. ∆G° (kCal) Stability of the oxide -40 Cu2O -60 NiO -80 FeO -100 CO Cr2O3 ...
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1. Introduction. The ladle furnace slag or refining slag, referred to as the ladle slag (LS) thereafter, is a by-product generated from the steel refining stages when the steel is being desulfurized in the secondary refining process of high-alloyed steel (Manso et al., 2005; Setién et al., 2009; Vilaplana et al., 2015).On average, producing one tonne of steel results in …
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3. requirements have been put forward for the quality of steel. Therefore, ladle refining furnaces are almost equipped with converters and electric arc furnaces. In the process of molten steel ladle furnace metallurgy, slag and alloy are added according to the process requirements, so physical changes and chemical reactions occur, resulting in a large amount …
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The ladle furnace slag was ground for different durations in a ball grinder to obtain slag powder with a specific size distribution. Analytical reagents, namely Sodium bicarbonate (purity: 99.5%), were dissolved in deionised water to prepare a 500 ml solution in a beaker. The beaker was placed in a constant-temperature tank, and the slag powder ...
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With the increasing demand for specialty and high-quality steel, ladle furnace refining technology has been widely used, which produces a large amount of ladle furnace slag (LFS). LFS has problems such as poor stability and early setting, which largely limit the utilization of LFS in the cement industry.
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Ladle furnace slag (LFS) with conventional curing was not effective for the immobilization of lead (Pb), while LFS with carbonation curing effectively reduced the leaching of Pb. The concentrations of leached Pb from carbonated specimens with initial Pb concentrations of 5000–25,000 mg/kg were decreased by four orders of magnitude than that ...
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Apart from the commonly used BS and EAS substitutes, ladle furnace slag (LS) is a high-calcium precursor that can be used as a replacement in the synthesis of geopolymer. Thus far, only 20% of LS produced worldwide has been recycled in several fields such as soil improvement, water pollution control, bituminous mixes, ...
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Ladle furnace slag disintegrates into fine powder during cooling due to phase transformations of di-calcium silicate. This creates an adverse impact on working conditions and the environment by ...
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@misc{etde_578967, title = {Application of MgO-C castable for ladle furnace slag line; LF nabe slag line eno MgO-C castable no tekiyo} author = {Teranishi, H, Kawamura, T, Yasui, K, and Imai, I} abstractNote = {This paper reports application of MgO-C castable for ladle furnace slag line (where MgO-C bricks are used). Properties demanded in such a castable …
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The ladle furnace slag (LFS) is produced in the secondary metallurgy process, during the final stages of steelmaking. In this phase, steel is heated in the ladle furnace and, through the addition of quicklime (CaO), subjected to desulfurization, degassing of oxygen, nitrogen, and hydrogen, removal of impurities and final decarburization (done for ultralow …
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2.4 Ladle furnace slag (LFS) LFS, known as refining slag, comes from the refining process of pig iron via ladle furnace converters, where the steel is desulphured during the secondary …
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Fluorine-bearing refining slag (FBS) is used to produce axle steel for electric multiple unit vehicles. To avoid environmental pollution caused by fluorine, a fluorine-free ladle furnace slag (FFS) was designed based on an industrial FBS. The effects of main components on the physical and metallurgical properties of slag were investigated via theoretical analysis …
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A rapidly air-cooled ladle furnace slag (RA-LFS), which is a type of steelmaking slag discharged from a steel mill, was used to synthesize CaCO 3 film. The CaCO 3 film with 35 cm 2 /of surface area was synthesized under atmospheric conditions, and the surface morphology of the CaCO 3 films was changed by using additives (CaCl 2 and ethylene glycol). Especially, …
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Ladle furnace reducing slag is a common byproduct in steelmaking of carbon and low alloy steels. After air cooling and weathering over several days, this material is completely ground into fine white particles. Physical, chemical, and crystalline ...
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The ladle furnace steel slag, a by-product of steel production in the converter, underwent a process where molten slag was discharged into a slag pan and cooled through a combination of air exposure and water spray from a cannon. Subsequently, the slag was ground to attain the specified grain size, the 0/8 mm fraction, which served as the input ...
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Abstract Ladle slag is a byproduct formed during the ladle refining stage of steel making. It is a dusty material that has been considered industrial waste. ... and the applications of ladle …
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Approximately 10–15% of the world's steel production is derived from small industries. While ladle furnaces contribute to maintaining a generally good quality of refined steel, new challenges arise, especially when striving for very low sulfur percentages in steel. To address this, the study explores the impact of process parameters such as aluminum, silicon, …
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The operation executed at the Ladle Furnaces is an essential part of the secondary metallurgy treatment, such as refining, adjustment of liquid steel temperature and chemical composition with the target to increase quality of steel. ... Rotary Holding Furnace Slag Granulation Plant Ladles and Bail Assemblies Anode Mould Boxes. read more ...
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Ladle furnace slag is a waste composed essentially of quicklime or hydrated lime, whose contents depend on the raw material and the cooling process that led to the slag batch. With this chemical ...
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Ladle furnace reducing slag is a common byproduct in steelmaking of carbon and low alloy steels. After air cooling and weathering over several days, this material is completely ground into fine white particles. Physical, chemical, and crystalline characterizations were performed in order to verify possibilities for its direct application as a construction material.
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1. Introduction. The ladle furnace slag (LFS) is a by-product of the steelmaking process, generated from an additional steel refining process that aims to reduce the content of sulfur and phosphorous (Adolfsson et al., 2011; Bocci, 2018; Setién et al., 2009).About 30 million tons of LFS are produced worldwide every year (Mahoutian and Shao, 2016). ...
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Ladle furnace slag disintegrates into fine powder during cooling due to phase transformations of di-calcium silicate. This creates an adverse impact on working conditions and the environment by ...
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Ladle furnace reducing slag is a common byproduct in steelmaking of carbon and low alloy steels. After air cooling and weathering over several days, this material is completely …
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The ladle furnace slag used in this study came from the steel manufacturing industry. As mentioned above, ladle furnace slag is found in steel refining or ladle furnaces. The sample was taken representatively, such that it contained all particle sizes typical of …
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INTECO's Smart Electrode Controller (ISEC) was developed to meet modern furnace operation requirements especially Electric Arc Furnaces and Ladle Furnaces. Designed to control different arc operations, the ISEC can also be applied to other types of electric furnaces for non-ferrous metals, ferro-alloys and even slag heating.
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