Characterization and Mössbauer spectroscopy of steel slag generated in the ladle furnance in SIDERPERU steel plant

Domínguez, A.; Valerio-Cuadros, Marlon Ivan; Borja-Castro, L. E.; Valencia-Bedregal, R. A.; Santibañez, J. Flores; Suárez, Silvia; Cabrera-Tinoco, H. A.; Moreno, N. O.; Barnes, Colin; Valladares, L. De Los Santos

doi:10.1007/s10751-022-01799-x

Cited by 3 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The steel slag produced during the ladle refining stage consists of calcium oxide (CaO) and magnesium oxide (MgO), contributing to 60 % of its weight. All the other added alloys and the chemicals used to protect the refractory wall of the ladle furnace contribute to the final composition of LF slag [20].…”

Section: Lf Slag Productionmentioning

confidence: 99%

Ladle Furnace Slag: Synthesis, Properties, and Applications

Jacob

2023

ChemBioEng Reviews

View full text Add to dashboard Cite

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 production and the weathering of the slag post‐production, the elemental composition of the steel slag largely varies. Owing to this, its characteristics cannot be generalized and specific applications depending on the sources are developed. It is generally used in construction materials, soil rejuvenation, and CO2 capture. This paper reviews the production process, the mineralogical and morphological properties, stabilization techniques, 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 respect, a comprehensive review of the properties of LF slag and its current application will help provide a framework for the development of future sustainability goals. With increased slag usage, the ladle refining process of steelmaking can be turned into a more carbon‐neutral process.

show abstract

Section: Lf Slag Productionmentioning

confidence: 99%

Ladle Furnace Slag: Synthesis, Properties, and Applications

Jacob

2023

ChemBioEng Reviews

View full text Add to dashboard Cite

show abstract

“…According to different production processes and stages, steel slag is mainly divided into basic oxygen furnaces steel slag (BOF), electric arc furnace slag (EAF), and ladle furnace slag (LF) [1]. The characteristics of steel slag depend on the steel-making process [2]. It is characterized by rich free calcium oxide/magnesium, low gelling performance, high heavy metals and poor volume stability [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Effect of neutral activator on properties of steel slag powder-cement composite cementitious material

2022

IJM

View full text Add to dashboard Cite

In this paper, the physical and mechanical properties of TISCO steel slag were tested by different ratios of composite activators. The optimal neutral composite activator was determined, and the properties of neutral activated steel slag power-cement composite cementitious material with 30% cement content were studied. The experimental results indicated that the best ratio of gypsum: silica fume: sodium sulfate: sodium aluminate: selfmade activator was 2.5:2.5:1:0.5:0.5. Through XRD, SEM and TG-DTG detection, less stable periclase was found at 30% cement content and activated steel slag slurry. After 28d curing, the micro morphology and compactness of hydration products were not different from those of cement, and there were even no incompletely hydrated particles. The voids between hydration products and the interface of different hydration products were continuously filled with hydration products over age. C-S-H and AFt generated by 7d activated SSP cement composite powder was greater than those of cement. At 28d, a small amount of Ca(OH)2 was generated. The results show that the combination of self-made neutral activator and other activators can improve the properties of cement steel slag powder composite cementitious material and improve the utilization rate of steel slag.

show abstract

Characterization of iron oxide waste scales obtained by rolling mill steel industry

et al. 2022

Self Cite

View full text Add to dashboard Cite

Every year, the steelmaking industry produces millions of tons of slags resulting in pollution to the environment. Among the waste, secondary metals and scales rich in iron oxides are also thrown away. There is a need to treat the steel waste in a reasonably way to protect the environment and proposing new cheap technologies for producing advanced materials. In this study we report the morphological and structural characterization of waste scales generated during roll milling steel process at JSC “Arcelor Mittal Temirtau”. The raw slag and annealed at 1000 °C were measured by X-ray diffraction (XRD), scanning electron microscopy adapted with energy dispersive X-ray (SEM- EDX), magnetometry and Mössbauer Spectroscopy (MS). Fe and O were detected by EDX as main chemical elements and Si, S, Ca, Mg, C and Al as minimal elemental composition. XDR for the raw sample revealed α-Fe2O3 (hematite) and Fe3O4 (magnetite) as principal and secondary phase, respectively; whereas monophasic α-Fe2O3 is detected for the scales annealed at 1000 °C. Magnetometry measurements show the Verwey transition for the raw sample and the Morin transition for the annealed at 1000 °C; those are fingerprints for the presence of magnetite and hematite, respectively. MS measurements for the raw sample consist of 6 small peaks of absorption and a broad two-lines absorption peak in the central part. The doublets are associated to the hyperfine parameters belonging to wustite. Magnetite is related to the hyperfine parameters for two sextets in octahedral Fe2.5+ and tetrahedral Fe3+sites and a small sextet that resembles the Mössbauer parameters of α-Fe2O3. Only a well crystallized and weakly ferromagnetic sextet confirm the presence of α-Fe2O3 phase for the sample annealed at 1000 °C due to thermal oxidation.

show abstract

Characterization and Mössbauer spectroscopy of steel slag generated in the ladle furnance in SIDERPERU steel plant

Cited by 3 publications

References 30 publications

Ladle Furnace Slag: Synthesis, Properties, and Applications

Ladle Furnace Slag: Synthesis, Properties, and Applications

Effect of neutral activator on properties of steel slag powder-cement composite cementitious material

Characterization of iron oxide waste scales obtained by rolling mill steel industry

Contact Info

Product

Resources

About