Hematite Nanoparticles Addition to Serpentine/Pyroxenes By-Products of Magnesite Mining Enrichment Process for the Production of Refractories

Kalaitzidou, Kyriaki; Pagona, Evangelia; Stratigousis, Paraskevas; Ntampou, Xanthi; Zaspalis, Vasileios; Zouboulis, Anastasios; Mitrakas, Manassis

doi:10.3390/app12042094

Open AccessArticle

Hematite Nanoparticles Addition to Serpentine/Pyroxenes By-Products of Magnesite Mining Enrichment Process for the Production of Refractories

by

Kyriaki Kalaitzidou

^1,*

,

Evangelia Pagona

¹,

Paraskevas Stratigousis

¹,

Xanthi Ntampou

¹,

Vasileios Zaspalis

¹,

Anastasios Zouboulis

²

and

Manassis Mitrakas

¹

Department of Chemical Engineering, School of Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece

²

Department of Chemistry, School of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece

^*

Author to whom correspondence should be addressed.

Appl. Sci. 2022, 12(4), 2094; https://doi.org/10.3390/app12042094

Submission received: 29 December 2021 / Revised: 11 February 2022 / Accepted: 15 February 2022 / Published: 17 February 2022

(This article belongs to the Special Issue Treatment of Wastes and Energy Recovery)

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Abstract

The present study focuses on the refractory upgrade and reuse of the mining wastes/by-products of the magnesite mine “Grecian Magnesite SA” (Chalkidiki, N. Greece), by the addition of hematite (α-Fe₂O₃) nanomaterial. These by-products were also examined after the application of thermal pre-treatment, i.e., treated at 850 °C for 30 min, prior to sintering. Different thermal treatments and times were applied, aiming to induce the formation of forsterite and attempting to examine the respective effects on the refractory properties of up-cycled products. The results indicate that hematite addition of 5 wt.% can improve the major refractory parameters of products, whereas the applied thermal pre-treatment was not found to be particularly beneficial. Nevertheless, the optimum results were realized after thermal treatment at 1300 °C for 120 min heating time, also revealing that the initial mineralogical content of the examined mineral wastes is a key factor for the subsequent upgrade ranking of the final product.

Keywords: serpentinized mining waste; magnesite beneficiation by-products; Fe₂O₃ nanoparticles addition; thermal pre-treatment; refractory properties upgrade

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MDPI and ACS Style

Kalaitzidou, K.; Pagona, E.; Stratigousis, P.; Ntampou, X.; Zaspalis, V.; Zouboulis, A.; Mitrakas, M. Hematite Nanoparticles Addition to Serpentine/Pyroxenes By-Products of Magnesite Mining Enrichment Process for the Production of Refractories. Appl. Sci. 2022, 12, 2094. https://doi.org/10.3390/app12042094

AMA Style

Kalaitzidou K, Pagona E, Stratigousis P, Ntampou X, Zaspalis V, Zouboulis A, Mitrakas M. Hematite Nanoparticles Addition to Serpentine/Pyroxenes By-Products of Magnesite Mining Enrichment Process for the Production of Refractories. Applied Sciences. 2022; 12(4):2094. https://doi.org/10.3390/app12042094

Chicago/Turabian Style

Kalaitzidou, Kyriaki, Evangelia Pagona, Paraskevas Stratigousis, Xanthi Ntampou, Vasileios Zaspalis, Anastasios Zouboulis, and Manassis Mitrakas. 2022. "Hematite Nanoparticles Addition to Serpentine/Pyroxenes By-Products of Magnesite Mining Enrichment Process for the Production of Refractories" Applied Sciences 12, no. 4: 2094. https://doi.org/10.3390/app12042094

APA Style

Kalaitzidou, K., Pagona, E., Stratigousis, P., Ntampou, X., Zaspalis, V., Zouboulis, A., & Mitrakas, M. (2022). Hematite Nanoparticles Addition to Serpentine/Pyroxenes By-Products of Magnesite Mining Enrichment Process for the Production of Refractories. Applied Sciences, 12(4), 2094. https://doi.org/10.3390/app12042094

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Hematite Nanoparticles Addition to Serpentine/Pyroxenes By-Products of Magnesite Mining Enrichment Process for the Production of Refractories

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