From metal retention to metal release in ferronickel slags

Tamara Đorđević; Anna Potysz; Artur Pędziwiatr; Sabine Schwarz; Wencke Wegner

From metal retention to metal release in ferronickel slags

Tamara Đorđević (Corresponding author)
, Anna Potysz
, Artur Pędziwiatr
, Sabine Schwarz
, Wencke Wegner

Department of Mineralogy and Crystallography

Publications: Contribution to book › Contribution to proceedings › Peer Reviewed

Abstract

Building on our previous study of both historical and fresh ferronickel slags produced from the smelting of lateritic Ni ores (Đorđević et al., 2024), we further investigated the retention and mobility of metals in electric furnace slags (EFS) using scanning and transmission electron microscopy (SEM and TEM), as well as Raman spectroscopy. Our analyses revealed the presence of crystalline Fe-rich forsterite, ortho- and clinopyroxenes (e.g., enstatite,
pigeonite, augite), spinel-group phases (e.g., magnesiochromite, trevorite), an amorphous slag matrix as well as regions enriched in intermetallic Fe_xNi_y particles and Ni- and Fe-sulfides. On the microscale, Fe_xNi_y particles and sulfides are commonly intergrown. Additionally, Fe_xNi_y nanoparticles (<10 nm) were observed embedded in the glass matrix. Due to their high surface area, these nanoparticles may significantly influence slag reactivity, both in terms of potential applications and environmental metal release.

Original language	English
Title of host publication	MINERALOGIA ‒ SPECIAL PAPERS
Subtitle of host publication	Abstracts and field trip guide, 30th Meeting of the Petrology Group of the Mineralogical Society of Poland
Editors	Magdalena PAŃCZYK, Anna JANUSZEWSKA-KACPRZAK, Katarzyna DERKOWSKA
Place of Publication	Lubliniec, Poland
Pages	57
Number of pages	1
Volume	53
Edition	2025
Publication status	Published - 2025
Event	30th Meeting of the Petrology Group of the Mineralogical Society of Poland: „How Can Mineralogical Sciences Support the Mineral Resources Industry?” - Lubliniec, Poland Duration: 16 Oct 2025 → 19 Oct 2025 https://ptmin2025.uwr.edu.pl/

Publication series

Series	MINERALOGIA ‒ SPECIAL PAPERS
Volume	53
ISSN	1899-8518

Conference

Conference	30th Meeting of the Petrology Group of the Mineralogical Society of Poland
Abbreviated title	PTMin 2025
Country/Territory	Poland
City	Lubliniec
Period	16/10/25 → 19/10/25
Internet address	https://ptmin2025.uwr.edu.pl/

Funding

This research was funded by the Wissenschaftlich-Technische Zusammenarbeit (WTZ) of the OeAD [PL 14/2024] and the Polish National Agency for Academic Exchange (NAWA) [BPN/BAT/2023/1/00021]

Austrian Fields of Science 2012

105116 Mineralogy
105113 Crystallography

Access to Document

https://www.ptmin.pl/mineralogia53.pdf

Cite this

Đorđević, T., Potysz, A., Pędziwiatr, A., Schwarz, S., & Wegner, W. (2025). From metal retention to metal release in ferronickel slags. In M. PAŃCZYK, A. JANUSZEWSKA-KACPRZAK, & K. DERKOWSKA (Eds.), MINERALOGIA ‒ SPECIAL PAPERS: Abstracts and field trip guide, 30th Meeting of the Petrology Group of the Mineralogical Society of Poland (2025 ed., Vol. 53, pp. 57). https://www.ptmin.pl/mineralogia53.pdf

Đorđević, Tamara ; Potysz, Anna ; Pędziwiatr, Artur et al. / From metal retention to metal release in ferronickel slags. MINERALOGIA ‒ SPECIAL PAPERS: Abstracts and field trip guide, 30th Meeting of the Petrology Group of the Mineralogical Society of Poland. editor / Magdalena PAŃCZYK ; Anna JANUSZEWSKA-KACPRZAK, ; Katarzyna DERKOWSKA. Vol. 53 2025. ed. Lubliniec, Poland, 2025. pp. 57 (MINERALOGIA ‒ SPECIAL PAPERS, Vol. 53).

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Đorđević, T, Potysz, A, Pędziwiatr, A, Schwarz, S & Wegner, W 2025, From metal retention to metal release in ferronickel slags. in M PAŃCZYK, A JANUSZEWSKA-KACPRZAK, & K DERKOWSKA (eds), MINERALOGIA ‒ SPECIAL PAPERS: Abstracts and field trip guide, 30th Meeting of the Petrology Group of the Mineralogical Society of Poland. 2025 edn, vol. 53, Lubliniec, Poland, MINERALOGIA ‒ SPECIAL PAPERS, vol. 53, pp. 57, 30th Meeting of the Petrology Group of the Mineralogical Society of Poland, Lubliniec, Poland, 16/10/25. <https://www.ptmin.pl/mineralogia53.pdf>

From metal retention to metal release in ferronickel slags. / Đorđević, Tamara (Corresponding author); Potysz, Anna; Pędziwiatr, Artur et al.
MINERALOGIA ‒ SPECIAL PAPERS: Abstracts and field trip guide, 30th Meeting of the Petrology Group of the Mineralogical Society of Poland. ed. / Magdalena PAŃCZYK; Anna JANUSZEWSKA-KACPRZAK,; Katarzyna DERKOWSKA. Vol. 53 2025. ed. Lubliniec, Poland, 2025. p. 57 (MINERALOGIA ‒ SPECIAL PAPERS, Vol. 53).

Publications: Contribution to book › Contribution to proceedings › Peer Reviewed

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T1 - From metal retention to metal release in ferronickel slags

AU - Đorđević, Tamara

AU - Potysz, Anna

AU - Pędziwiatr, Artur

AU - Schwarz, Sabine

AU - Wegner, Wencke

PY - 2025

Y1 - 2025

N2 - Building on our previous study of both historical and fresh ferronickel slags produced from the smelting of lateritic Ni ores (Đorđević et al., 2024), we further investigated the retention and mobility of metals in electric furnace slags (EFS) using scanning and transmission electron microscopy (SEM and TEM), as well as Raman spectroscopy. Our analyses revealed the presence of crystalline Fe-rich forsterite, ortho- and clinopyroxenes (e.g., enstatite, pigeonite, augite), spinel-group phases (e.g., magnesiochromite, trevorite), an amorphous slag matrix as well as regions enriched in intermetallic FexNiy particles and Ni- and Fe-sulfides. On the microscale, FexNiy particles and sulfides are commonly intergrown. Additionally, FexNiy nanoparticles (<10 nm) were observed embedded in the glass matrix. Due to their high surface area, these nanoparticles may significantly influence slag reactivity, both in terms of potential applications and environmental metal release.

AB - Building on our previous study of both historical and fresh ferronickel slags produced from the smelting of lateritic Ni ores (Đorđević et al., 2024), we further investigated the retention and mobility of metals in electric furnace slags (EFS) using scanning and transmission electron microscopy (SEM and TEM), as well as Raman spectroscopy. Our analyses revealed the presence of crystalline Fe-rich forsterite, ortho- and clinopyroxenes (e.g., enstatite, pigeonite, augite), spinel-group phases (e.g., magnesiochromite, trevorite), an amorphous slag matrix as well as regions enriched in intermetallic FexNiy particles and Ni- and Fe-sulfides. On the microscale, FexNiy particles and sulfides are commonly intergrown. Additionally, FexNiy nanoparticles (<10 nm) were observed embedded in the glass matrix. Due to their high surface area, these nanoparticles may significantly influence slag reactivity, both in terms of potential applications and environmental metal release.

M3 - Contribution to proceedings

VL - 53

T3 - MINERALOGIA ‒ SPECIAL PAPERS

SP - 57

BT - MINERALOGIA ‒ SPECIAL PAPERS

A2 - PAŃCZYK, Magdalena

A2 - JANUSZEWSKA-KACPRZAK,, Anna

A2 - DERKOWSKA, Katarzyna

CY - Lubliniec, Poland

T2 - 30th Meeting of the Petrology Group of the Mineralogical Society of Poland

Y2 - 16 October 2025 through 19 October 2025

ER -

Đorđević T, Potysz A, Pędziwiatr A, Schwarz S, Wegner W. From metal retention to metal release in ferronickel slags. In PAŃCZYK M, JANUSZEWSKA-KACPRZAK, A, DERKOWSKA K, editors, MINERALOGIA ‒ SPECIAL PAPERS: Abstracts and field trip guide, 30th Meeting of the Petrology Group of the Mineralogical Society of Poland. 2025 ed. Vol. 53. Lubliniec, Poland. 2025. p. 57. (MINERALOGIA ‒ SPECIAL PAPERS, Vol. 53).