New multifunctional materials based on steel slag
2018
Authors
Milašević, IvanaIvanović, Ljubica
Nikolić, Irena
Đurović, Dijana
Marković, Smilja
Radmilović, Vuk
Radmilović, Velimir R.
Conference object (Published version)
Metadata
Show full item recordAbstract
Electric arc furnace slag (EAFS) is the by-product of steel production in an electric arc furnace. In a pass two decade a special attention is paid to the valorization of metallurgical slags by alkali activation. The process involves a chemical reaction of slag with the alkaline activator followed by the condensation and hardening processes. Aluminium-containing calcium silicate hydrate gel i.e. C–(A)–S–H gel with a low C/S ratio has been identified as a reaction product of slag alkali activation. We have synthesized the AAS using the EAFS as the precursor and Na2SiO3 solution as an activator. The AAS samples are characterized by XRD, SEM/EDS and FTIR analysis. Moreover, investigation of mechanical properties dilatometric and porosity analysis were performed as well so as to build up a detailed illustration of AAS properties and possible application of these materials. The results have shown that AAS may reach the compressive strength (~ 40 MPa) which enables its application in a civil... engineering. Moreover, the AAS sample exhibits improved strength (~ 50 MPa) at elevated temperatures thus potential application of these materials in a high temperature conditions should be considered. On the other hand, these materials may be used as an effective adsorbent for the Cu2+ removal from sulfate bearing wastewater. The Cu2 + ions have been found to be attached on the surface of AAS by formation of stable hydrooxocomplexes that are sorbed on the adsorbent surface via hydroxyl groups in the form of posnjakite crystal phase.
Keywords:
steel slag / alkali activation / electric arc furnace slag / wastewater purificationSource:
Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, Septemb, 2018, 123-123Publisher:
- Belgrade : Materials Research Society of Serbia
Funding / projects:
- Synthesis, processing and applications of nanostructured multifunctional materials with defined properties (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45019)
- Development, characterization and application nanostructured and composite electrocatalysts and interactive supports for fuel cells and water electrolysis (RS-MESTD-Basic Research (BR or ON)-172054)
- Ministry of Science of Montenegro, Project no. 01-460
Institution/Community
Tehnološko-metalurški fakultetTY - CONF AU - Milašević, Ivana AU - Ivanović, Ljubica AU - Nikolić, Irena AU - Đurović, Dijana AU - Marković, Smilja AU - Radmilović, Vuk AU - Radmilović, Velimir R. PY - 2018 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3771 AB - Electric arc furnace slag (EAFS) is the by-product of steel production in an electric arc furnace. In a pass two decade a special attention is paid to the valorization of metallurgical slags by alkali activation. The process involves a chemical reaction of slag with the alkaline activator followed by the condensation and hardening processes. Aluminium-containing calcium silicate hydrate gel i.e. C–(A)–S–H gel with a low C/S ratio has been identified as a reaction product of slag alkali activation. We have synthesized the AAS using the EAFS as the precursor and Na2SiO3 solution as an activator. The AAS samples are characterized by XRD, SEM/EDS and FTIR analysis. Moreover, investigation of mechanical properties dilatometric and porosity analysis were performed as well so as to build up a detailed illustration of AAS properties and possible application of these materials. The results have shown that AAS may reach the compressive strength (~ 40 MPa) which enables its application in a civil engineering. Moreover, the AAS sample exhibits improved strength (~ 50 MPa) at elevated temperatures thus potential application of these materials in a high temperature conditions should be considered. On the other hand, these materials may be used as an effective adsorbent for the Cu2+ removal from sulfate bearing wastewater. The Cu2 + ions have been found to be attached on the surface of AAS by formation of stable hydrooxocomplexes that are sorbed on the adsorbent surface via hydroxyl groups in the form of posnjakite crystal phase. PB - Belgrade : Materials Research Society of Serbia C3 - Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, Septemb T1 - New multifunctional materials based on steel slag EP - 123 SP - 123 UR - https://hdl.handle.net/21.15107/rcub_technorep_3771 ER -
@conference{ author = "Milašević, Ivana and Ivanović, Ljubica and Nikolić, Irena and Đurović, Dijana and Marković, Smilja and Radmilović, Vuk and Radmilović, Velimir R.", year = "2018", abstract = "Electric arc furnace slag (EAFS) is the by-product of steel production in an electric arc furnace. In a pass two decade a special attention is paid to the valorization of metallurgical slags by alkali activation. The process involves a chemical reaction of slag with the alkaline activator followed by the condensation and hardening processes. Aluminium-containing calcium silicate hydrate gel i.e. C–(A)–S–H gel with a low C/S ratio has been identified as a reaction product of slag alkali activation. We have synthesized the AAS using the EAFS as the precursor and Na2SiO3 solution as an activator. The AAS samples are characterized by XRD, SEM/EDS and FTIR analysis. Moreover, investigation of mechanical properties dilatometric and porosity analysis were performed as well so as to build up a detailed illustration of AAS properties and possible application of these materials. The results have shown that AAS may reach the compressive strength (~ 40 MPa) which enables its application in a civil engineering. Moreover, the AAS sample exhibits improved strength (~ 50 MPa) at elevated temperatures thus potential application of these materials in a high temperature conditions should be considered. On the other hand, these materials may be used as an effective adsorbent for the Cu2+ removal from sulfate bearing wastewater. The Cu2 + ions have been found to be attached on the surface of AAS by formation of stable hydrooxocomplexes that are sorbed on the adsorbent surface via hydroxyl groups in the form of posnjakite crystal phase.", publisher = "Belgrade : Materials Research Society of Serbia", journal = "Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, Septemb", title = "New multifunctional materials based on steel slag", pages = "123-123", url = "https://hdl.handle.net/21.15107/rcub_technorep_3771" }
Milašević, I., Ivanović, L., Nikolić, I., Đurović, D., Marković, S., Radmilović, V.,& Radmilović, V. R.. (2018). New multifunctional materials based on steel slag. in Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, Septemb Belgrade : Materials Research Society of Serbia., 123-123. https://hdl.handle.net/21.15107/rcub_technorep_3771
Milašević I, Ivanović L, Nikolić I, Đurović D, Marković S, Radmilović V, Radmilović VR. New multifunctional materials based on steel slag. in Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, Septemb. 2018;:123-123. https://hdl.handle.net/21.15107/rcub_technorep_3771 .
Milašević, Ivana, Ivanović, Ljubica, Nikolić, Irena, Đurović, Dijana, Marković, Smilja, Radmilović, Vuk, Radmilović, Velimir R., "New multifunctional materials based on steel slag" in Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, Septemb (2018):123-123, https://hdl.handle.net/21.15107/rcub_technorep_3771 .