Ash and Slag Waste Processing in Self-Shielded Atmospheric DC Arc Discharge Plasma

In this paper, we report the experimental results obtained in slag waste processing by direct current arc discharge initiated in ambient air. The method does not employ vacuum and gas equipment, therefore increasing the energy efficiency of processing. Plasma processing of coal slag was performed at...

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Detalles Bibliográficos
Autores principales: Bolatova, Zhanar, Pak, Alexander, Larionov, Kirill, Nikitin, Dmitriy, Povalyaev, Pavel, Ivashutenko, Aleksander, Mamontov, Gennady, Pestryakov, Alexey
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9698856/
https://www.ncbi.nlm.nih.gov/pubmed/36431620
http://dx.doi.org/10.3390/ma15228134
Descripción
Sumario:In this paper, we report the experimental results obtained in slag waste processing by direct current arc discharge initiated in ambient air. The method does not employ vacuum and gas equipment, therefore increasing the energy efficiency of processing. Plasma processing of coal slag was performed at different arc exposure times: 5, 10, 15, 20, and 25 s. The obtained materials contained a significant amount of graphite, which was removed through combustion. The micropowder based on silicon carbide and aluminum nitride was obtained and then sintered by spark plasma. The bulk ceramic samples based on silicon carbide with the hardness of ~10.4 GPa were finally fabricated.

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