Contemporary industry specifies ever higher requirements for steel quality [1, 2].Since it is provided indirectly in a steel smelting unit with a significant loss of productivity, with the aim of minimizing expenditure for a series of production operations it is transferred into a subsidiary unit, i.e., a ladle furnace unit (LFU) that makes it possible to …
In this work, the optical emissions from the arc have been measured in an industrial ladle furnace and used for slag composition analysis. This article focuses on CaF 2 and …
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 …
13.5.3 Ladle furnace slag (LFS) LFS is slag from secondary processes. It is one of the so-called secondary metallurgical slags (SECS), which are generated during the production …
Ladle furnace slag (LFS) is a by-product of the steel industry and is difficult to be reused due to its weak cementitious property, low strength, and potential leaching of heavy metals. The ...
For the steelmaking industry, aluminium is an important deoxidizer. In the process of de-oxidation, aluminium combines with oxygen dissolved in liquid steel to generate alumina, then it combines with the calcium oxide in molten steel or slag, forming calcium aluminate (12CaO·7Al 2 O 3 and 3CaO·Al 2 O 3).Thus, calcium aluminate is the …
Ladle Furnace Slag: Synthesis, Properties, and Applications. Liya Jacob[1,2],* Abstract. Ladle slag is a byproduct formed during the ladle re-fining stage of steel making. It is a …
Using ladle furnace slag to sequester the CO 2 generated by the steel industry can not only reduce carbon dioxide emissions but also increase the utilization …
In this work, the optical emissions from the arc have been measured in an industrial ladle furnace and used for slag composition analysis. This article focuses on CaF 2 and MgO, since the CaF 2 is a common additive material in the ladle treatment and high MgO content means that the ladle refractory lining is dissolving into the slag.
For this purpose, samples of ladle furnace slag, taken from the regular production process in the CMC Sisak d.o.o. between October 2010 and October 2011, were subjected to a series of tests. The ...
Powdered ladle furnace slag (LFS) used in this study. 2.2. Characterization of LFS and CEM-I. In a recently published paper [47], the authors have reported the physical, chemical, mineralogical, and morphological properties of LFS used in this study. They have used laser diffraction, X-ray fluorescence, X-ray diffraction, and scanning electron ...
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 …
Ladle Furnace Refining and Slag Generation. After completion of the primary steelmaking operations, steel produced by the BOF or EAF processes can be further refined to obtain the desired chemical composition. These refining processes are called secondary steelmaking operations. Refining processes are common in the …
Ladle furnace slag is a by-product of the steel industry, deriving from the second stage of the production process, which presents some cementitious properties, mainly due to its high CaO content. A series of test mortars with 20% by weight of the cement substituted...
One of the first ordinary ladle metallurgical processes was the Perrin process, in which steel was tapped into a ladle containing pre-melted slag. The kinetic energy of the steel was used to produce a large reaction surface and intensive stirring in the ladle. ... Fig 1 Schematics of ladle furnace equipment with top rinsing ...
Slag removal. Keeping furnace slags on the molten steel too long can result in a reversion of elements such as phosphorus back into the steel. To avoid this, slag can be removed at slag-skimming stations, where the ladle is tilted forward and a rake scrapes the slag into a slag pot parked beneath the ladle.
Ladle furnace slag (LFS) is an alkaline solid waste material with a high calcium content, that is produced as a by-product of secondary refining processes in the iron and steel industry 1.The ...
Abstract Ladle refining is a popular secondary metallurgy process and plays a vital role in achieving the desired chemistry and temperature during steelmaking. The slag produced after ladle refining mostly contains dicalcium silicate (C2S). The presence of high C2S in slag leads to the disintegration of slag into fine powder during cooling due to …
LF furnace does not encompass a vacuum system, but the ladle and furnace lid can isolate air, so the graphite electrode reacts with the iron oxide, manganese oxide, and chromic oxide in slag to generate gaseous carbon monoxide during heating, and the oxygen content in the furnace atmosphere is decreased to 0.5%.
DOI: 10.1016/J.CONBUILDMAT.2020.122235 Corpus ID: 233694190; Accelerated carbonation of ladle furnace slag and characterization of its mineral phase @article{Yi2021AcceleratedCO, title={Accelerated carbonation of ladle furnace slag and characterization of its mineral phase}, author={Yuan Yi and Yue Lin and Yunchang Du …
Ladle furnace slag (LFS) is a by-product of the steel industry and is difficult to be reused due to its weak cementitious property, low strength, and potential leaching of heavy metals. The emission of carbon dioxide (CO2) is also a concern for the steel industry.
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 furnace (LF) slag. One of the prime focuses of waste remediation and sustainable industry is to find meaningful ways to turn waste into products. In this ...
Ladle furnace slag is produced through the addition of lime and dolomitic limestone in an electric furnace during the secondary refining of steel and contains high concentrations of calcium oxide. After cooling, weathering and irrigation of ladle furnace slag occurs for several days after the production of the slag as waste, where the initial ...
Ladle furnace basic slag, or refining slag, is produced in the final stages of steelmaking, when the steel is desulphured in the transport ladle, during what is generally known as the secondary metallurgy process. The liquid steel is at first subjected to an acid dephosphoration process in the EAF or the BOF (oxygen blowing), after which it is ...
E. T. Turkdogan, Fundamentals of steel making, (London Institute of Materials, 1996). Google Scholar . Z. Wcisło, A. Michaliszyn, A. Baka "Role of slag in the steel refining process in the ladle", Journal of achievements in materials and manufacturing engineering, 55(2012) 390–395.
A promising type of slag for such applications is Ladle Furnace Slag (LFS), which is also known as basic slag, reducing slag, white slag and secondary refining slag. Its production in Spain stood at half-a-million tons in 2010; partially, it is reused in Portland cement manufacture (Oficemen – Unesid), being the rest allocated to new uses at ...
This paper reviews the production process, the mineralogical and morphological properties, stabilization techniques, and the applications of ladle furnace …
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. Technical advancements towards a sustainable industry led to the development of different applications for ladle slag. Depending on the processing methods during the steel slag …
Ladle refining is widely used in the steelmaking process.[1,2,3,4] During the last year, over 20 million tons of spent ladle refining furnace slag were discharged into the environment, resulting in serious problems.Therefore, various methods for utilizing and processing of spent slag have been proposed.
The authors thank the Ministerio de Fomento del Gobierno de España (Spanish Government Ministry of Public Works) for providing the University of León (Spain) with the funds to conduct the research project "Improvement of unsuitable soils by means of ladle furnace slag in embankment construction" (Ref. 80029/A04), the results of which are …
