Micro-Raman Spectroscopy Investigation of Crystalline Phases in EAF Slag
Source abstract
Abstract
Electric arc furnace (EAF) slags were investigated by micro-Raman spectroscopy. A slag sample characterised by well-developed crystalline phases was obtained. The EDXS elemental composition made it possible to recognize the grains corresponding to the brownmillerite, larnite and magnesioferrite phases, as identified by XRD in the same powdered sample. The grains were collected and analysed by µ-Raman spectra, and the results showed good reproducibility in each grain and good agreement with spectra of the phases reported in the literature. A Raman database devoted to crystalline phases of EAF slag identification was created to be used by portable Raman instruments, allowing the phase characterisation of the slag directly during steel production.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Metallurgical Processes and Thermodynamics · Metal Extraction and Bioleaching · Mineral Processing and Grinding
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Chemistry for Technologies Laboratory, INSTM and Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze 38, 25123 Brescia, Italy
Metallurgy at Department of Mechanical and Industrial Engineering, University of Brescia, University of Brescia, Via Branze 38, 25123 Brescia, Italy
Department of Mechanical Engineering, Polytechnic University of Milan, Via La Masa 1, 20156 Milan, Italy
Funding
Fondazione Cariplo
References (36)
Show source-provided references
1. Worldsteel Association (2018). World Steel in Figures 2018, Worldsteel Association.
2. An Overview of Utilization of Steel Slag10.1016/j.proenv.2012.10.108 ↗
3. Chemical, Mineralogical, and Morphological Properties of Steel Slag10.1155/2011/463638 ↗
4. Mechanical and durability characteristics of concrete containing EAF slag as aggregate10.1016/j.cemconcomp.2009.05.006 ↗
5. Procedure operative per la produzione di inerte artificiale in luogo di scoria nera
6. Gelfi, M., Cornacchia, G., Conforti, S., and Roberti, R. (2010, January 10–12). Caratterizzazione di Scorie di Acciaieria e Studio del Rilascio di Cromo. Proceedings of the Atti del 33° Convegno Nazionale AIM, Brescia, Italy.
7. Physico-Chemical Characterization of Steel Slag. Study of its Behavior under Simulated Environmental Conditions10.1021/es100690b ↗
8. From Portable to SCA Raman devices to characterize harmful compounds contained in used black slag produced in Electric Arc Furnace of steel industry10.1002/jrs.4342 ↗
9. A New Type of Secondary Radiation10.1038/121501c0 ↗
10. Raman spectroscopy – Basic principle, instrumentation and selected applications for the characterization of drugs of abuse10.1016/j.ejfs.2015.06.001 ↗
11. A portable versus micro-Raman equipment comparison for gemmological purposes: The case of sapphires and their imitations10.1002/jrs.4555 ↗
12. Fatigue Behavior Of Pipeline Steel Under Hydrogen Environment And Low Temperature10.1016/j.proeng.2011.04.552 ↗
13. Gelfi, M., Cornacchia, G., and Roberti, R. (2010, January 19–22). Investigations on leaching behavior of EAF steel slags. Proceedings of the Euroslag 2010, Madrid, Spain.
14. The efficiency of quartz addition on electric arc furnace (EAF) carbon steel slag stability10.1016/j.jhazmat.2014.07.045 ↗
15. Effect of cooling rate on the crystallization behavior of perovskite in high titanium-bearing blast furnace slag10.1007/s12613-014-1009-3 ↗
16. Riboldi, A., Cornacchia, G., Gelfi, M., Borgese, L., Zacco, A., Bontempi, E., Boniardi, M.V., Casaroli, A., and Depero, L.E. (2020). Grain Size Effect in Elution Test of Electric Arc Furnace Slag. Appl. Sci., 10.10.3390/app10020477 ↗
17. Physical and Chemical Characteristics of Blast Furnace, Basic Oxygen Furnace, and Electric Arc Furnace Steel Industry Slags10.1021/es9906002 ↗
18. Characteristics of the slags produced in the fusion of scrap steel by electric arc furnace10.1016/S0008-8846(99)00253-7 ↗
19. Flamite, (Ca,Na,K)2(Si,P)O4, a new mineral from ultrahightemperature combustion metamorphic rocks, Hatrurim Basin, Negev Desert, Israel10.1180/minmag.2015.079.3.05 ↗
20. Raman Spectroscopic Investigations of Dicalcium Silicate: Polymorphs and High-Temperature Phase Transformations10.1111/j.1151-2916.1997.tb02846.x ↗
21. (2020, May 19). RRUFF Database. Available online: https://rruff.info/.
22. Reversible control of the magnetization of spinel ferrites based electrodes by lithium-ion migration10.1038/s41598-017-12948-6 ↗
23. Raman fingerprint of chromate, aluminate and ferrite spinels10.1002/jrs.4764 ↗
24. High pressure Raman spectroscopy of ferrite MgFe2O410.1016/S0025-5408(02)00819-X ↗
25. Electronic structure and magnetic properties of Al-doped Ca2 Fe2 O5 brownmillerite compounds10.1111/jace.15357 ↗
26. Incommensurate structure of Ca2Al2O5 at high temperatures–structure investigation and Raman spectroscopy10.1107/S0108768108016029 ↗
27. Anomalous room temperature magnetoresistance in brownmillerite Ca2Fe2O510.1039/C5RA16955K ↗
28. Anisotropy in the Raman scattering of a CaFeO2.5 single crystal and its link with oxygen ordering in Brownmillerite frameworks10.1088/0953-8984/27/22/225403 ↗
29. Growth and comparison of single crystals and polycrystalline brownmillerite Ca2Fe2O510.1016/j.jcrysgro.2016.09.051 ↗
30. Raman study of anorthite, calcium Tschermak’s pyroxene, and gehlenite in crystalline and glassy states
31. Symmetry lowering due to site-occupation disorder in vibrational spectra of gehlenite, Ca2(AlSi)AlO710.1016/0022-3697(93)90011-F ↗
32. Pressure-induced phase transition study of magnesiochromite (MgCr2O4) by Raman spectroscopy and X-ray diffraction10.1016/j.pepi.2012.02.011 ↗
33. Direct synthesis of maghemite, magnetite and wustite nanoparticles by flame spray pyrolysis10.1016/j.apt.2008.08.002 ↗
34. The structure of high-silica alkali-silicate glasses. A Raman spectroscopic investigation10.1016/0022-3093(83)90032-7 ↗
35. A Structural Study on the Foaming Behavior of CaO-SiO2-MO (MO = MgO, FeO, or Al2O3) Ternary Slag System10.1007/s11663-017-1079-5 ↗
36. Vibrational spectroscopy of the amorphous silicates10.1016/0924-2031(93)87057-Z ↗